Leiomioma intestinal intrapélvico em cão - desafio diagnóstico e terapêutico / Intrapelvic intestinal leiomyoma in a dog - diagnostic and therapeutic challenges

Background: Rectal tumors are uncommon in dogs and cats. The clinical signs result from intra- and extraluminal compression. Diagnosis and treatment of rectal tumors are challenging due to their intraplevic location. Owing to considerable bonesuperposition, computed tomography is the best exam to evaluate the tumor and plan surgery; however, poor availabilityand high costs may hinder its use. The objective of this case report is to describe the successful use of a combination ofdiagnostic techniques, namely transrectal ultrasound, transrectal fine-needle aspiration, and colonoscopy, for diagnosisand surgery planning in a case of intrapelvic intestinal leiomyoma in a dog.Case: A 13-year-old female mongrel dog with tenesmus, low stool production, and hematochezia for two months was presented for examination. During this two-month period, a symptomatic treatment was administered, but there was no clinicalimprovement. In the clinical evaluation revealed a painless mass on the left dorsolateral region, at a depth of around 4 cm,with considerable luminal reduction. Abdominal ultrasound revealed a mass close to the descending colon; however, bonesuperposition precluded identification of its origin or delimitation of its boundaries. The patient was subjected to transrectalultrasound imaging, colonoscopy, and cytological examination of fine-needle aspiration biopsy material collected under generalanesthesia. The mass was located at the final portion of the descending colon; it was extraluminal, and measured around 7 x7 cm. The integrity of the intestinal wall was preserved. Next, radiographic examination of the thorax using three projections(ventrodorsal, left lateral, and right lateral) was performed to check for metastases, and no alteration was detected. Cytologysuggested presence of leiomyoma. The patient underwent exploratory laparotomy with pubic osteotomy for intrapelvic access...

Leiomioma intestinal intrapélvico em cão - desafio diagnóstico e terapêutico / Intrapelvic intestinal leiomyoma in a dog - diagnostic and therapeutic challenges

Background: Rectal tumors are uncommon in dogs and cats. The clinical signs result from intra- and extraluminal compression. Diagnosis and treatment of rectal tumors are challenging due to their intraplevic location. Owing to considerable bonesuperposition, computed tomography is the best exam to evaluate the tumor and plan surgery; however, poor availabilityand high costs may hinder its use. The objective of this case report is to describe the successful use of a combination ofdiagnostic techniques, namely transrectal ultrasound, transrectal fine-needle aspiration, and colonoscopy, for diagnosisand surgery planning in a case of intrapelvic intestinal leiomyoma in a dog.Case: A 13-year-old female mongrel dog with tenesmus, low stool production, and hematochezia for two months was presented for examination. During this two-month period, a symptomatic treatment was administered, but there was no clinicalimprovement. In the clinical evaluation revealed a painless mass on the left dorsolateral region, at a depth of around 4 cm,with considerable luminal reduction. Abdominal ultrasound revealed a mass close to the descending colon; however, bonesuperposition precluded identification of its origin or delimitation of its boundaries. The patient was subjected to transrectalultrasound imaging, colonoscopy, and cytological examination of fine-needle aspiration biopsy material collected under generalanesthesia. The mass was located at the final portion of the descending colon; it was extraluminal, and measured around 7 x7 cm. The integrity of the intestinal wall was preserved. Next, radiographic examination of the thorax using three projections(ventrodorsal, left lateral, and right lateral) was performed to check for metastases, and no alteration was detected. Cytologysuggested presence of leiomyoma. The patient underwent exploratory laparotomy with pubic osteotomy for intrapelvic access...(AU)

Billroth I technique application after resection of gastric leiomyoma in a dog

Background: Gastric neoplasia is rare, corresponding to less than 1% of cases, with a lower prevalence of those involving smooth muscle tissues. In these cases, clinical signs worsen in the occurrence of pyloric obstruction, leading to clinical manifestations such as chronic emesis. The exeresis of the neoplasm is promoted as a therapeutic measure to reestablish gastrointestinal flow. There partial gastrectomy followed by gastroduodenal anastomosis, using the Billroth I technique, is among the available surgical techniques. The therapeutic success of the Billroth I technique after pylorectomy was reported in a dog with gastric leiomyoma. Case: A 9-year-old male Poodle dog, weighing 9.5 kg, was referred for clinical evaluation with a history of chronic vomiting starting three months ago, progressive weight loss, and melena, previously treated by another Veterinarian as idiopathic gastroenteritis. The physical evaluation of the animal showed a state of normal consciousness, body score 4/9, pale ocular and oral mucous membranes, respiratory rate 20 mpm, heart rate 166 bpm, a rectal temperature of 37.9°C, and dehydration degree of 8.0%. Blood count showed normocytic normochromic anemia and leukocytosis with shift to the right. Radiographic and endoscopic examinations were not noteworthy. Endoscopic biopsy after a histopathological evaluation showed no cellular or tissue atypia. On the other hand, abdominal ultrasound assessment revealed thickening with loss of echotexture and definition of the muscular layer of the gastric wall, pyloric and duodenum region compatible with benign antral muscle hypertrophy and/or pyloric neoplasia. The animal worsened 5 days after the initial treatment, with progressive episodes of emesis and melena, opting for an exploratory laparotomy. A mass of firm consistency measuring approximately 2.5 × 6.0 cm in diameter was found in the pyloric region, opting for a pylorectomy. The excised fragment was sent for histopathological...

Billroth I technique application after resection of gastric leiomyoma in a dog

Background: Gastric neoplasia is rare, corresponding to less than 1% of cases, with a lower prevalence of those involving smooth muscle tissues. In these cases, clinical signs worsen in the occurrence of pyloric obstruction, leading to clinical manifestations such as chronic emesis. The exeresis of the neoplasm is promoted as a therapeutic measure to reestablish gastrointestinal flow. There partial gastrectomy followed by gastroduodenal anastomosis, using the Billroth I technique, is among the available surgical techniques. The therapeutic success of the Billroth I technique after pylorectomy was reported in a dog with gastric leiomyoma. Case: A 9-year-old male Poodle dog, weighing 9.5 kg, was referred for clinical evaluation with a history of chronic vomiting starting three months ago, progressive weight loss, and melena, previously treated by another Veterinarian as idiopathic gastroenteritis. The physical evaluation of the animal showed a state of normal consciousness, body score 4/9, pale ocular and oral mucous membranes, respiratory rate 20 mpm, heart rate 166 bpm, a rectal temperature of 37.9°C, and dehydration degree of 8.0%. Blood count showed normocytic normochromic anemia and leukocytosis with shift to the right. Radiographic and endoscopic examinations were not noteworthy. Endoscopic biopsy after a histopathological evaluation showed no cellular or tissue atypia. On the other hand, abdominal ultrasound assessment revealed thickening with loss of echotexture and definition of the muscular layer of the gastric wall, pyloric and duodenum region compatible with benign antral muscle hypertrophy and/or pyloric neoplasia. The animal worsened 5 days after the initial treatment, with progressive episodes of emesis and melena, opting for an exploratory laparotomy. A mass of firm consistency measuring approximately 2.5 × 6.0 cm in diameter was found in the pyloric region, opting for a pylorectomy. The excised fragment was sent for histopathological...(AU)

Bilateral pyelonephritis due to Escherichia coli infection in a captive jaguar (Panthera onca) / Pielonefrite bilateral por Escherichia coli em uma onça-pintada (Panthera onca)

Extraintestinal pathogenic Escherichia coli (ExPEC) is a highly diverse pathotype of E. coli which colonizes the intestine, and it is considered an important etiological agent associated with bacteremia and other systemic infections, among them urinary tract infection. Retrospective studies evaluating morbidity and mortality of nondomestic felids have demonstrated that urinary tract diseases are among the main causes of death for geriatric animals. Also, mesenchymal neoplasms of the uterus are common in wild felids, and they possess variable morphologic characteristics related to invasiveness and malignancy. This report describes a case of bilateral pyelonephritis due to extraintestinal uropathogenic E. coli infection in a captive jaguar (Panthera onca). The diagnosis was confirmed through pathological, bacterial and immunohistochemical findings. According to molecular analysis, this E. coli strain was classified in the phylogroup F, possessing the following virulence-associated genes: usp, cnf-1, hlyA, papC and sfa. Additionally, this E. coli was highly resistant to beta-lactams and first-generation cephalosporin. This jaguar also presented a uterine leiomyoma with distinct distribution, and severe degenerative articular disease, both of them described as frequently seen lesions in geriatric animals from the Panthera genus.(AU)

Escherichia coli extraintestinal patogênica (ExPEC) é um patotipo altamente diverso de E. coli que coloniza o intestino e é considerada um agente etiológico importante, associado com bacteremia e outras infecções sistêmicas, dentre elas infecções do trato urinário. Estudos retrospectivos avaliando morbidade e mortalidade de felídeos não domésticos demostram que doenças do trato urinário estão entre as principais causas de morte de animais geriátricos. Ainda, neoplasias mesenquimais uterinas são comuns em felídeos de cativeiro e possuem características morfológicas variáveis relacionadas a invasividade e malignidade. Neste relato é descrito um caso de pielonefrite bilateral por E. coli extraintestinal uropatogênica em uma onça-pintada de cativeiro (Panthera onca). O diagnóstico foi confirmado através dos achados patológicos, bacteriológicos e imuno-histoquímicos. A partir da análise molecular, esta cepa de E. coli foi classificada no filogrupo F, possuindo os seguintes genes associados a virulência: usp, cnf-1, hlyA, papC and sfa. Adicionalmente, a bactéria isolada foi altamente resistente a ß-lactâmicos e cefalosporinas de primeira geração. Foi observado ainda um leiomioma uterino com distribuição distinta e doença articular degenerativa severa, ambas descritas na literatura como comumente observadas em animais geriátricos do gênero Panthera.(AU)

Bilateral pyelonephritis due to Escherichia coli infection in a captive jaguar (Panthera onca)

ABSTRACT: Extraintestinal pathogenic Escherichia coli (ExPEC) is a highly diverse pathotype of E. coli which colonizes the intestine, and it is considered an important etiological agent associated with bacteremia and other systemic infections, among them urinary tract infection. Retrospective studies evaluating morbidity and mortality of nondomestic felids have demonstrated that urinary tract diseases are among the main causes of death for geriatric animals. Also, mesenchymal neoplasms of the uterus are common in wild felids, and they possess variable morphologic characteristics related to invasiveness and malignancy. This report describes a case of bilateral pyelonephritis due to extraintestinal uropathogenic E. coli infection in a captive jaguar (Panthera onca). The diagnosis was confirmed through pathological, bacterial and immunohistochemical findings. According to molecular analysis, this E. coli strain was classified in the phylogroup F, possessing the following virulence-associated genes: usp, cnf-1, hlyA, papC and sfa. Additionally, this E. coli was highly resistant to -lactams and first-generation cephalosporin. This jaguar also presented a uterine leiomyoma with distinct distribution, and severe degenerative articular disease, both of them described as frequently seen lesions in geriatric animals from the Panthera genus.

RESUMO: Escherichia coli extraintestinal patogênica (ExPEC) é um patotipo altamente diverso de E. coli que coloniza o intestino e é considerada um agente etiológico importante, associado com bacteremia e outras infecções sistêmicas, dentre elas infecções do trato urinário. Estudos retrospectivos avaliando morbidade e mortalidade de felídeos não domésticos demostram que doenças do trato urinário estão entre as principais causas de morte de animais geriátricos. Ainda, neoplasias mesenquimais uterinas são comuns em felídeos de cativeiro e possuem características morfológicas variáveis relacionadas a invasividade e malignidade. Neste relato é descrito um caso de pielonefrite bilateral por E. coli extraintestinal uropatogênica em uma onça-pintada de cativeiro (Panthera onca). O diagnóstico foi confirmado através dos achados patológicos, bacteriológicos e imuno-histoquímicos. A partir da análise molecular, esta cepa de E. coli foi classificada no filogrupo F, possuindo os seguintes genes associados a virulência: usp, cnf-1, hlyA, papC and sfa. Adicionalmente, a bactéria isolada foi altamente resistente a -lactâmicos e cefalosporinas de primeira geração. Foi observado ainda um leiomioma uterino com distribuição distinta e doença articular degenerativa severa, ambas descritas na literatura como comumente observadas em animais geriátricos do gênero Panthera.

Leiomioma vulvar em lobo-guará (Chrysocyon brachyurus) - relato de caso / Leiomyoma vulvar in maned wolf (Chrysocyon brachyurus) - case report

Descrição de leiomioma vulvar em lobo-guará (Chrysocyon brachyurus), fêmea, castrada, apresentando 10 anos de idade e mantida em cativeiro. Com base na avaliação clínica, no monitoramento de formação nodular de crescimento lento e progressivo e no diagnóstico preliminar sugestivo de neoplasia, procedeu-se à exérese da massa tumoral e à identificação anatomopatológica do leiomioma. Exames complementares radiográficos e ultrassonográficos não apontaram presença de metástases. A ressecção cirúrgica se mostrou satisfatória como conduta clínica, não havendo recidiva.(AU)

Description of leiomyoma vulvar in a female castrated Chrysocyon brachyurus, , ten years of age, and maintained in captivity. Based on the clinical evaluation, monitoring of nodular formation of slow and progressive growth, and preliminary diagnosis suggestive of neoplasia, the tumor mass was excised and anatomopathological identification of the leiomyoma was done. Complementary radiographic and ultrasound examinations did not indicate the presence of metastases. Surgical resection proved to be satisfactory as a clinical practice, and there was no relapse.(AU)

Leiomioma vulvar em lobo-guará (Chrysocyon brachyurus) - relato de caso / Leiomyoma vulvar in maned wolf (Chrysocyon brachyurus) - case report

Descrição de leiomioma vulvar em lobo-guará (Chrysocyon brachyurus), fêmea, castrada, apresentando 10 anos de idade e mantida em cativeiro. Com base na avaliação clínica, no monitoramento de formação nodular de crescimento lento e progressivo e no diagnóstico preliminar sugestivo de neoplasia, procedeu-se à exérese da massa tumoral e à identificação anatomopatológica do leiomioma. Exames complementares radiográficos e ultrassonográficos não apontaram presença de metástases. A ressecção cirúrgica se mostrou satisfatória como conduta clínica, não havendo recidiva.(AU)

Description of leiomyoma vulvar in a female castrated Chrysocyon brachyurus, , ten years of age, and maintained in captivity. Based on the clinical evaluation, monitoring of nodular formation of slow and progressive growth, and preliminary diagnosis suggestive of neoplasia, the tumor mass was excised and anatomopathological identification of the leiomyoma was done. Complementary radiographic and ultrasound examinations did not indicate the presence of metastases. Surgical resection proved to be satisfactory as a clinical practice, and there was no relapse.(AU)

Leiomioma de bexiga em um cão / Bladder leiomyoma in a male dog

Background: In dogs, neoplasms of the urinary bladder are uncommon; among urinary bladder tumors, transitional cell carcinoma is the most frequent type. Urinary bladder leiomyomas are rare mesenchymal tumors whose etiology is associated with urinary retention and exposure to carcinogens. Diagnosis of this neoplasm can be determined by histopathological analysis, and treatment is surgical. The aim of this report is to describe a case of leiomyoma in the urinary bladder of a dog.Case: A 10-year-old male mongrel dog was examined at the Veterinary Hospital of Federal University of Paraíba, where a mass in the urinary bladder was identified, and was estimated to have been developing over the course of a month. Hematuria, congested ocular mucosa, and engorged episcleral vessels were observed during the physical examination. Ultrasonographic examination confirmed distension of the urinary bladder, which exhibited anechoic content and echogenic sediment. A neoplasm measuring 8 x 3.39 cm was detected in the bladder wall. This neoplasm had mixed echogenicity, heterogeneous echotexture, and well-defined borders. Color Doppler ultrasonography allowed observation of vascularization inside the mass. The animal was subjected to cystotomy to excise the mass, which was slightly adhered to the inner wall of the bladder. After this procedure, the excised specimen was submitted for histopathological analysis. Macroscopic examination revealed that the mass was firm, lobulated, nodular, and resistant to cutting. The sample was fixed in 10% formalin; the fragments were processed and stained with hematoxylin and eosin (HE) or Masson’s trichrome (MT) for analysis by optical microscopy. The histopathological examination revealed that the mass was encapsulated, had well-delimited borders composed by bundles of elongated cells with no atypical characteristics. These cells exhibited a slightly eosinophilic cytoplasm that contained moderate to abundant fusiform nuclei.[...]

Leiomioma de bexiga em um cão / Bladder leiomyoma in a male dog

Background: In dogs, neoplasms of the urinary bladder are uncommon; among urinary bladder tumors, transitional cell carcinoma is the most frequent type. Urinary bladder leiomyomas are rare mesenchymal tumors whose etiology is associated with urinary retention and exposure to carcinogens. Diagnosis of this neoplasm can be determined by histopathological analysis, and treatment is surgical. The aim of this report is to describe a case of leiomyoma in the urinary bladder of a dog.Case: A 10-year-old male mongrel dog was examined at the Veterinary Hospital of Federal University of Paraíba, where a mass in the urinary bladder was identified, and was estimated to have been developing over the course of a month. Hematuria, congested ocular mucosa, and engorged episcleral vessels were observed during the physical examination. Ultrasonographic examination confirmed distension of the urinary bladder, which exhibited anechoic content and echogenic sediment. A neoplasm measuring 8 x 3.39 cm was detected in the bladder wall. This neoplasm had mixed echogenicity, heterogeneous echotexture, and well-defined borders. Color Doppler ultrasonography allowed observation of vascularization inside the mass. The animal was subjected to cystotomy to excise the mass, which was slightly adhered to the inner wall of the bladder. After this procedure, the excised specimen was submitted for histopathological analysis. Macroscopic examination revealed that the mass was firm, lobulated, nodular, and resistant to cutting. The sample was fixed in 10% formalin; the fragments were processed and stained with hematoxylin and eosin (HE) or Massons trichrome (MT) for analysis by optical microscopy. The histopathological examination revealed that the mass was encapsulated, had well-delimited borders composed by bundles of elongated cells with no atypical characteristics. These cells exhibited a slightly eosinophilic cytoplasm that contained moderate to abundant fusiform nuclei.[...](AU)

Post mortem ultrasound and computed tomography findings of an extraluminal urinary bladder leiomyoma in a dog

Background: Neoplasia of the urinary bladder is common in dogs, accounting approximately 0.5 to 1.0 percent of all neoplasms. Most of the neoplasia of the urinary bladder is epithelial in origin and only 10% of urinary bladder neoplasms in dogs are from mesenchymal origin, of which the most frequent types are leiomyoma / leiomyosarcoma, and hemangioma / hemangiosarcoma. Virtual autopsy refers to the postmortem use of radiology, ultrasound and cross-sectional imaging prior to conventional necropsy. This paper reports the detection of a rare extra-luminal urinary bladder mass diagnosed as leiomyoma with a virtual autopsy techniques.Case: A 16-year-old male Schnauzer had previous history of seizure and no complains related to the urinary system. The animal was treated symptomatically to the neurological signs and responded to medical treatment. Nine weeks later from the first visit to the hospital the dog was found dead at home. Then postmortem ultrasound and computed tomography of the abdomen were performed. Postmortem ultrasound revealed a homogenously hypoechoic, rounded and slightly irregularly marginated mass located externally but adjacent to the left cranial wall of the urinary bladder and appears to extend from its serosal margins. Postmortem computed tomography was performed after postmortem ultrasound. A pedunculated homogenous soft tissue attenuating mass was located at the left lateral aspect of the urinary bladder and extended cranially. It had a stalk that connected to the left lateral wall of the urinary bladder. A partial necropsy of the abdomen was done just to examine the mass. A round extraluminal, pedunculated mass was observed at the left lateral aspect of the urinary bladder wall. It was pale pink on the outside and white inside, with a soft to firm consistency. The lumen and mucosal surface of the urinary bladder was smooth and regular...

Post mortem ultrasound and computed tomography findings of an extraluminal urinary bladder leiomyoma in a dog

Background: Neoplasia of the urinary bladder is common in dogs, accounting approximately 0.5 to 1.0 percent of all neoplasms. Most of the neoplasia of the urinary bladder is epithelial in origin and only 10% of urinary bladder neoplasms in dogs are from mesenchymal origin, of which the most frequent types are leiomyoma / leiomyosarcoma, and hemangioma / hemangiosarcoma. Virtual autopsy refers to the postmortem use of radiology, ultrasound and cross-sectional imaging prior to conventional necropsy. This paper reports the detection of a rare extra-luminal urinary bladder mass diagnosed as leiomyoma with a virtual autopsy techniques.Case: A 16-year-old male Schnauzer had previous history of seizure and no complains related to the urinary system. The animal was treated symptomatically to the neurological signs and responded to medical treatment. Nine weeks later from the first visit to the hospital the dog was found dead at home. Then postmortem ultrasound and computed tomography of the abdomen were performed. Postmortem ultrasound revealed a homogenously hypoechoic, rounded and slightly irregularly marginated mass located externally but adjacent to the left cranial wall of the urinary bladder and appears to extend from its serosal margins. Postmortem computed tomography was performed after postmortem ultrasound. A pedunculated homogenous soft tissue attenuating mass was located at the left lateral aspect of the urinary bladder and extended cranially. It had a stalk that connected to the left lateral wall of the urinary bladder. A partial necropsy of the abdomen was done just to examine the mass. A round extraluminal, pedunculated mass was observed at the left lateral aspect of the urinary bladder wall. It was pale pink on the outside and white inside, with a soft to firm consistency. The lumen and mucosal surface of the urinary bladder was smooth and regular...(AU)

Gastric leiomyoma a report of two cases / Leiomioma gástrico relato de dois casos clínicos

Gastric cancer in dogs is rare. Leiomyoma is a benign tumorthat occurs most commonly in the stomach of older dogs. Itssymptoms are associated with a functional disorder of the stomachflow. The best investigative tests for gastric cancer are abdominalultrasound and endoscopy; diagnosis is based on histopathologicexamination. Treatment of gastric cancer is performed by surgicalresection, with a good prognosis when complete tumor excisionis obtained. In this article, two cases of gastric leiomyomaare reported, both in older asymptomatic bitches where theleiomyoma was found by abdominal ultrasound. With thesurgical excision of the tumors, good survival of both animalswas attained.

Neoplasias gástricas em cães são raras. O leiomioma é umtumor benigno que ocorre comumente em estômago decães idosos. A sua sintomatologia é associada ao distúrbiofuncional do fluxo gástrico. Os exames mais indicados paraneoplasias gástricas são ultrassom abdominal e endoscopia,e seu diagnóstico baseia-se no exame histopatológico. O tratamentose dá por ressecção cirúrgica e o prognóstico é bomquando for obtida a excisão completa. O presente trabalhorelata dois casos de leiomioma gástrico, ambos em cadelasidosas assintomáticas, onde o leiomioma foi confirmado peloexame de ultrassom abdominal. A excisão cirúrgica dos tumoresfoi realizada.

Gastric leiomyoma a report of two cases / Leiomioma gástrico relato de dois casos clínicos

Gastric cancer in dogs is rare. Leiomyoma is a benign tumorthat occurs most commonly in the stomach of older dogs. Itssymptoms are associated with a functional disorder of the stomachflow. The best investigative tests for gastric cancer are abdominalultrasound and endoscopy; diagnosis is based on histopathologicexamination. Treatment of gastric cancer is performed by surgicalresection, with a good prognosis when complete tumor excisionis obtained. In this article, two cases of gastric leiomyomaare reported, both in older asymptomatic bitches where theleiomyoma was found by abdominal ultrasound. With thesurgical excision of the tumors, good survival of both animalswas attained.(AU)

Neoplasias gástricas em cães são raras. O leiomioma é umtumor benigno que ocorre comumente em estômago decães idosos. A sua sintomatologia é associada ao distúrbiofuncional do fluxo gástrico. Os exames mais indicados paraneoplasias gástricas são ultrassom abdominal e endoscopia,e seu diagnóstico baseia-se no exame histopatológico. O tratamentose dá por ressecção cirúrgica e o prognóstico é bomquando for obtida a excisão completa. O presente trabalhorelata dois casos de leiomioma gástrico, ambos em cadelasidosas assintomáticas, onde o leiomioma foi confirmado peloexame de ultrassom abdominal. A excisão cirúrgica dos tumoresfoi realizada.(AU)

Aspectos clínicos, cirúrgicos, histológicos e pós-operatórios de oito cadelas com leiomioma vaginal / Clinical, surgical, histological and postoperative aspects in the case of eight bitches with vaginal leiomyoma

O presente trabalho reporta as características clínicas e cirúrgicas de oito casos de cadelas portadoras de leiomioma vaginal, com histórico de aumento de volume na região perineal, aparecimento de massa pela vulva, disquezia, tenesmo e disúria. As pacientes foram submetidas à cirurgia de episiotomia para ressecção da massa neoplásica, e em quatro casos foi necessária a ovariossalpingo-histerectomia. Porém, uma delas apresentou recidiva, e, no segundo procedimento cirúrgico de exérese de neoformação, o histopatológico diagnosticou leiomiossarcoma. A paciente ainda apresentou mais duas recidivas, até o proprietário optar pela eutanásia. Decorridos quatro meses, as sete cadelas diagnosticadas com leiomioma não apresentaram recidiva, e os proprietários relataram ausência de sinais relacionados com a doença descrita. Conclui-se que a episiotomia para ressecção da massa vaginal e a ovariossalpingo-histerectomia nas cadelas inteiras nos casos de tumores vaginais benignos são tratamentos satisfatórios, com bom prognóstico, ao contrário do leiomiossarcoma.(AU)

This study reports the clinical and surgical procedures of eight cases of bitches with vaginal leiomyoma. All animals presented increased volume in the perineal region, and exteriorization of the vulva, dyschezia, tenesmus and dysuria. The patients underwent episiotomy surgery for resection of the neoplastic mass, and ovariosalpingohisterectomy in four cases. However, one had recurrence on the second surgical procedure for removal of neoformation, histopathological diagnosed leiomyosarcoma, the patient also had two more relapses, until the owner chose euthanasia. After four months, the seven dogs diagnosed with leiomyoma showed no recurrence and the owners reported no signs of the disease described. We concluded that episiotomy for vaginal mass resection combined with ovariohysterectomy in cases of benign vaginal tumors have shown satisfactory treatment with good prognostic.(AU)

Pylorectomy and gastroduodenostomy (Billroth I procedure) for obstructive antrum pyloric leiomyoma in a bitch

Background: Gastric neoplasms are uncommon in dogs, especially those affecting smooth muscle layers. Leiomyoma is a smooth muscle benign neoplasm, which requires surgical resection. Pylorectomy and gastroduodenostomy (Billroth I procedure) is the most indicated technique in cases not affecting the biliary and pancreatic tracts. Thus, the purpose of this study was to report a successful case of Billroth I procedure in a bitch presenting antrum pyloric obstructive leiomyoma. Case: A 12-year-old, non-spayed, Cocker Spaniel bitch was admitted presenting depression, hyporexia, postprandial vomiting and sparse episodes of hematemesis, for 30 days. Clinical suspicion on obstructive gastric outflow disease was established. Bloodwork (complete blood count, BUN, albumin, ALP and ALT), abdominal ultrasound and thoracic radiographs were assessed. The patient undergone upper gastrointestinal endoscopy. On endoscopic evaluation, small hemorrhagic mucosa ulcers were visualized on the gastric body, antrum and pylorus. Moreover, a sessile, ulcerated, round-shape and infiltrated antral-pyloric mass was seen. The mass was 1.5-2.0 cm in diameter and apparently involved the smooth muscle layer, causing severe pyloric obstruction. However, endoscopic evaluation of the duodenum was possible. Several biopsy samples were taken from the neoplasm and sent for histopathologic assessment. The result was [...](AU)

Pylorectomy and gastroduodenostomy (Billroth I procedure) for obstructive antrum pyloric leiomyoma in a bitch

Background: Gastric neoplasms are uncommon in dogs, especially those affecting smooth muscle layers. Leiomyoma is a smooth muscle benign neoplasm, which requires surgical resection. Pylorectomy and gastroduodenostomy (Billroth I procedure) is the most indicated technique in cases not affecting the biliary and pancreatic tracts. Thus, the purpose of this study was to report a successful case of Billroth I procedure in a bitch presenting antrum pyloric obstructive leiomyoma. Case: A 12-year-old, non-spayed, Cocker Spaniel bitch was admitted presenting depression, hyporexia, postprandial vomiting and sparse episodes of hematemesis, for 30 days. Clinical suspicion on obstructive gastric outflow disease was established. Bloodwork (complete blood count, BUN, albumin, ALP and ALT), abdominal ultrasound and thoracic radiographs were assessed. The patient undergone upper gastrointestinal endoscopy. On endoscopic evaluation, small hemorrhagic mucosa ulcers were visualized on the gastric body, antrum and pylorus. Moreover, a sessile, ulcerated, round-shape and infiltrated antral-pyloric mass was seen. The mass was 1.5-2.0 cm in diameter and apparently involved the smooth muscle layer, causing severe pyloric obstruction. However, endoscopic evaluation of the duodenum was possible. Several biopsy samples were taken from the neoplasm and sent for histopathologic assessment. The result was [...]

Tumores em bovinos encontrados em abatedouros frigoríficos / Tumors found in cattle from slaughterhouses

Numa pesquisa em abatedouros a procura de lesões em bovinos, realizada de janeiro de 2011 a julho de 2014, 544 foram encontradas, das quais 65 eram neoplasmas. Quarenta e dois porcento desses tumores eram de origem mesenquimal; 37% eram epiteliais; 14,5% eram derivados da crista neural; 5% eram tumores do cordão sexual; e 1,5 eram tumores originários do sistema nervoso periférico. O tumor mais frequentemente encontrado foi o linfoma (28% de todos os tumores), a maioria dos casos como parte do complexo leucose bovina enzoótica. O carcinoma de células escamosas foi o segundo tumor mais frequente (15% de todos os tumores). É chamada a atenção para a frequência desses tumores e para a sua importância no diagnóstico diferencial no abatedouro frigorífico entre eles e outras lesões importantes, incluindo as lesões granulomatosas da tuberculose. Houve uma ocorrência significativa do feocromocitoma adrenal (13% de todos os tumores). Papilomatose representou apenas 3% de todos os tumores. Como papilomas são comuns em bovinos, seu baixo número nesse estudo pode ser explicado pelo fato de que eles não são usualmente diagnosticados no exame post mortem (quando o couro já foi retirado da carcaça), mas sim no exame ante mortem, como ocorreu na maioria dos casos deste estudo. Tumores encontrados com menor frequência (cada um perfazendo entre 1.5 e 3% de todos os tumores) incluíram adenocarcinoma apócrino misto da cauda, adenocarcinoma mamário, adenocarcinoma uterino, carcinoma de células renais, fibroma interdigital, hemangiossarcoma, leiomioma uterino, lipoma, lipossarcoma, mesotelioma, neurofibroma, tumor de células da granulosa, tumor estromal gastrointestinal, tumores hepáticos, tumores melanocíticos, e tumores pulmonares primários. Pretende-se que os resultados dessa pesquisa possam ajudar na identificação das lesões na inspeção oficial em matadouros frigoríficos.(AU)

In a survey for lesions in cattle in abattoirs from January 2011 to July 2014, 544 lesions were found, of which 65 were neoplasms. Forty two percent of those were of mesenchymal origin; 37% were epithelial; 14,5% were neural crest derivatives; 5% were sex chord derived tumors and 1.5 was from the peripheral nervous system. The most common tumor found was lymphoma (28% of all tumors), most of them as part of the enzootic leukosis complex. Squamous cell carcinoma was the second most frequent tumor (15% of all tumors). Consideration is made on the frequency of these tumors and the importance of the differential diagnosis at gross examination at the slaughterhouse among them and other important lesions, including tuberculous granulomatous lesions. There was a significance occurrence (13% of all tumors) of the adrenal tumor, pheocromocytoma. Papillomatosis represented only 3% of all tumors; as those are common benign tumors in cattle; their low numbers in this review could be explained by the fact that these are not tumors usually detected in the postmortem examination (after the hide was stripped from the carcass) which was mostly the case of this study, but rather by antemortem inspection. Less common tumors found (each accounting for 1.5 to 3% of all tumors) included granulosa cell tumor, gastrointestinal stromal tumor, hemangiosarcoma, hepatic tumors, interdigital fibroma, lipoma, liposarcoma, mammary adenocarcinoma, melanocytic tumors, mesothelioma, mixed apocrine adenocarcinoma of the tail, neurofibroma, renal cell carcinoma, primary pulmonary tumors, uterine adenocarcinoma, and uterine leiomyoma. It is intended that the results of this survey would be helpful in the identification of lesions at in the official meat inspection at the slaughterhouses.(AU)

Fibroma uterino em cadela / Uterine fibroma in dogs

Relatam-se dois casos de fibroma uterino em cadela. Caso 1: cadela Poodle, 15 anos de idade, pesando 3,8 Kg, nulípara, apresentando abdômen distendido, anorexia e aquiesia há quatro dias. Aos exames radiográficos e ultrassonográficos visualizou-se neoformação uterina. Caso 2: cadela Poodle de 13 anos de idade, pesando 3,0 Kg, nulípara, que à palpação abdominal apresentava uma massa consistente, circular, aparentemente localizada em útero. Ao exame ultrassonográfico da cavidade abdominal, visualizou-se conteúdo uterino e presença de estrutura circular hipoecogênica em útero. Diante dos quadros clínicos, procedeu-se ovariosalpingohisterectomia (OSH) de caráter emergencial em ambos os casos e as peças cirúrgicas foram enviadas para realização de exame histopatológico, que revelou como resultado fibroma. Os pacientes retornaram dez dias após o procedimento cirúrgico com a saúde restabelecida. 

Two cases of uterine fibroma in dogs are reported. Case #1: Poodle bitch, 15 years-old, 3.8kg, nulliparous, presenting distended abdomen, anorexia and aquesia for four days. Radiographic and ultrasonographic examinations evidenced uterine neoformation. Case #2: Poodle Bitch, 13 years-old, 3.0 kg, nulliparous, abdominal palpation revealed a circular hard mass, apparently involving the uterus. Abdominal ultrassonography evidenced uterine content and the presence of a circular echogenic structure inside the uterus. Emergency ovariosalpingohisterectomy (OSH) was performed in both cases and the diagnosis of uterine fibroma was given by histological examination. Patients returned ten days after the surgical procedure with restored health.(AU)

NEOPLASIAS EM ANIMAIS DE PRODUÇÃO, DIAGNOSTICADAS NO SETOR DE ANATOMIA PATOLÓGICA DA UFRRJ, NO PERÍODO DE 1947 A 2019.

O estudo das neoplasias em animais de produção é de extrema importância, uma vez que a sanidade animal é considerada fator limitante no desenvolvimento da produção animal. O objetivo deste trabalho foi estudar as neoplasias de bovinos, ovinos, caprinos, bubalinos, equinos, suínos, coelhos e galinhas, diagnosticadas no Setor de Anatomia Patológica da Universidade Federal Rural do Rio de Janeiro (SAP/UFRRJ), durante um período de 72 anos de serviços de extensão (1947-2019). As ferramentas utilizadas para a confirmação e ou conclusão dos diagnósticos incluiu sinais clínicos, descrição macroscópica das lesões e exameshistológicos. Como auxílio utilizaram-se, em alguns casos, a imunohistoquímica e em um diagnóstico a microscopia eletrônica. Este estudo foi dividido em três capítulos: no capítulo I descreve-se 839 neoplasias em animais de produção, de acordo com o diagnóstico anatomopatológico relacionado à espécie afetada e ao sistema orgânico no qual a neoplasia se desenvolveu. Os bovinos apresentaram o maior número de diagnósticos (41,2%), seguido das galinhas (36,7%) equinos (13%), suínos (2,9%), coelhos (2,9%), bubalinos (1,6%), caprinos (1,6%) e ovino (0,1%). O carcinoma epidermoide foi a principal neoplasia diagnosticada em bovinos (37,6%), em caprinos (69,2%); na espécie ovina apenas um caso de neoplasia foi diagnosticado no período do estudo. As neoplasias do sistema hematopoiético destacaram-se nas galinhas, devido à alta frequência da leucose aviária (linfoide e mieloide) com 74,7%. Sarcoide equino e melanoma foram as duas neoplasias com maior frequência nos equinos, com 23,8% e 14,7%, respectivamente. Melanoma também foi destaque nos suínos com 58,3% e o sistema tegumentar apresentou a maior frequência de tumores em coelhos (37,7%). No capítulo II foram aprofundadas as descrições de 12 diagnósticos de neoplasias de bubalinos, a partir de amostras provenientes do estado do Pará. Desses 12, quatro casos foram diagnosticados como linfoma, dois como carcinoma epidermoide de pele, dois feocromocitomas , ambos metastáticos para órgãos abdominais e um caso de cada uma das seguintes neoplasias: neurofibroma na pele, leiomioma uterino, tecoma ovariano (estes dois últimos na mesma fêmea), e osteocondrossarcoma na cavidade nasal unilateral. O capítulo III versa sobre uma série de casos de mesoteliomas epitelioides malignos, do tipo tubulopapilar, em quatro vacas Red Sindi de 15 a 21 anos, do mesmo rebanho. Além dos sinais clínicos, macro e microscopia típica de mesotelioma, as células neoplásicas apresentaram forte e difusa imunomarcação citoplasmática para pan-citoqueratina, mas foram negativas para citoqueratina 7 e vimentina. Ultraestruturalmente, as células neoplásicas tinham microvilosidades delicadas e junções estreitas e de ancoragem.

The study of neoplasms in farm animals is extremely important, since animal health is considered a limiting factor in the development of animal production. The objective of this work was to study the neoplasms of cattle, sheep, goats, buffaloes, horses, pigs, rabbits and chickens, diagnosed in the Pathological Anatomy Sector of the Federal Rural University of Rio de Janeiro (SAP / UFRRJ), during a period of 72 years of extension services (1947-2019). The tools used for the confirmation and / or conclusion of the diagnoses included clinical signs, macroscopic description of the lesions and histological exams. In some cases, immunohistochemistry was used as an aid and electron microscopy was used in a diagnosis. This study was divided into three chapters: chapter I describes 839 neoplasms in farm animals, according to the anatomopathological diagnosis related to the affected species and the organic system in which the neoplasia developed. The cattle showed the highest number of diagnoses (41.2%), followed by the hens (36.7%), horses (13%), swine (2.9%), rabbits (2.9%), buffaloes (1, 6%), goats (1.6%) and sheep (0.1%). Squamous cell carcinoma was the main cancer diagnosed in cattle (37.6%), in goats (69.2%); in the sheep species, only one case of neoplasia was diagnosed during the study period. Neoplasms of the hematopoietic system stood out in chickens, due to the high frequency of avian leukosis (lymphoid and myeloid) with 74.7%. Equine sarcoid and melanoma were the two most common neoplasms in horses, with 23.8% and 14.7%, respectively. Melanoma was also highlighted in swine with 58.3% and the integumentary system showed the highest frequency of tumors in rabbits (37.7%). In chapter II, the descriptions of 12 diagnoses of neoplasms of buffaloes were deepened, based on samples from the state of Pará. Of these 12, four cases were diagnosed as lymphoma, two as skin squamous cell carcinoma, two pheochromocytomas, both metastatic to abdominal organs. and one case of each of the following neoplasms: neurofibroma in the skin, uterine leiomyoma, ovarian tecoma (the latter two in the same female), and osteochondrosarcoma in the unilateral nasal cavity. Chapter III deals with a series of cases of malignant epithelioid mesotheliomas, of the tubulopapillary type, in four Red Sindi cows aged 15 to 21 years, from the same herd. In addition to clinical signs, macro and microscopy typical of mesothelioma, neoplastic cells showed strong and diffuse cytoplasmic immunostaining for pan-cytokeratin, but were negative for cytokeratin 7 and vimentin. Ultrastructurally, neoplastic cells had delicate microvilli and narrow, anchoring junctions.