ABSTRACT
An 11-year-old neutered male large crossbreed dog was presented for investigation because of a 10-day history of progressive lethargy, hyporexia, and pyrexia. Physical and dermatological examinations were unremarkable. Blood biochemical analysis identified a marked total and ionized hypercalcemia and increased C-reactive protein concentration. Bicavitary computed tomography screening for causes of the dog's clinical and biochemical abnormalities identified a diffuse panniculitis. Histopathological examination of full-thickness skin biopsies was consistent with pyogranulomatous inflammation. Extensive histochemical staining revealed no infectious etiology. Complete clinical and biochemical remissions were observed after starting immunosuppressive, followed by tapering, doses of prednisolone, supporting an immune-mediated etiology. Key clinical message: Sterile, immune-mediated pyogranulomatous inflammation should remain a differential diagnosis for hypercalcemia in dogs. Significant dermatological disease may occur without visible abnormalities.
Panniculite pyogranulomateuse à médiation immunitaire avec hypercalcémie chez un chienUn grand chien croisé mâle castré de 11 ans a été présenté pour examen en raison d'antécédents de léthargie progressive, d'hyporexie et de pyrexie depuis 10 jours. Les examens physiques et dermatologiques étaient sans particularité. L'analyse biochimique du sang présentait une hypercalcémie totale et ionisée marquée et une concentration accrue de protéine C-réactive. Le dépistage par tomodensitométrie bicavitaire des causes des anomalies cliniques et biochimiques du chien a identifié une panniculite diffuse. L'examen histopathologique des biopsies cutanées de pleine épaisseur était compatible avec une inflammation pyogranulomateuse. Un examen par coloration histochimique extensive n'a révélé aucune étiologie infectieuse. Les rémissions cliniques et biochimiques complètes ont été observées après le début du traitement immunosuppresseur, suivies d'une diminution progressive des doses de prednisolone, confirmant une étiologie à médiation immunitaire.Message clinique clé:L'inflammation pyogranulomateuse stérile à médiation immunitaire doit rester un diagnostic différentiel de l'hypercalcémie chez le chien. Une maladie dermatologique importante peut survenir sans anomalies visibles.(Traduit par Dr Serge Messier).
Subject(s)
Dog Diseases , Hypercalcemia , Panniculitis , Animals , Dogs , Dog Diseases/diagnosis , Dog Diseases/drug therapy , Dog Diseases/pathology , Male , Panniculitis/veterinary , Panniculitis/diagnosis , Hypercalcemia/veterinary , Prednisolone/therapeutic use , Immunosuppressive Agents/therapeutic useABSTRACT
BACKGROUND: Primary cutaneous lymphoma represents 0.2%-3% of all feline lymphomas, with nonepitheliotropic lymphomas being the most common. In humans and dogs, subcutaneous panniculitis-like T-cell lymphoma (SPTCL) is a primary nonepitheliotropic lymphoma with a T-cell phenotype developing in the subcutis and often mimicking inflammation. OBJECTIVE: The aim of this report is to describe pathological, phenotypical and clonal features of SPTCL in cats. ANIMALS: Six cats with SPTCL were included in this study. MATERIALS AND METHODS: Skin biopsies were formalin-fixed, routinely processed and stained. Histological and immunohistochemical investigation for anti-CD18, CD204, CD79a, CD20, CD3, FeLVp27and FeLVgp70 and clonality assessment were performed. RESULTS: Four male and two female domestic shorthair cats, mean age 11.2 years, developed SPTCL in the abdominal (three), inguinal (two) and thoracic (one) regions. Variably pleomorphic neoplastic lymphoid cells were present in the panniculus in percentages, expanding the septa (six of six) and extending into fat lobules in one of six cats. Tumours were associated with elevated numbers of neutrophils (five of six), lesser macrophages (six of six) and variable necrosis (six of six). Neoplastic cells expressed CD3+ (six of six), with clonal T-cell receptor rearrangement detected in five of six cats. CONCLUSIONS AND CLINICAL RELEVANCE: This is the first description of SPTCL in cats. Lesions can be confused with panniculitis, leading to delay in diagnosis and therapy. Awareness of this neoplastic disease is relevant to avoid misdiagnoses and to gain greater knowledge about the disease in cats.
Subject(s)
Cat Diseases , Dog Diseases , Lymphoma, T-Cell, Cutaneous , Lymphoma, T-Cell , Lymphoma , Panniculitis , Humans , Cats , Male , Animals , Female , Dogs , Lymphoma, T-Cell/diagnosis , Lymphoma, T-Cell/veterinary , Lymphoma, T-Cell/pathology , Panniculitis/diagnosis , Panniculitis/veterinary , Lymphoma/veterinary , Skin/pathology , Lymphoma, T-Cell, Cutaneous/pathology , Lymphoma, T-Cell, Cutaneous/veterinary , Cat Diseases/diagnosisABSTRACT
Leishmaniosis is a vector-borne disease caused by different Leishmania species and transmitted by phlebotomine sand flies under natural conditions in Europe. Scientific information related to Leishmania infantum in dogs is extensive, where less information is available in cats and other companion animals. Recently, first clinical cases of L.infantum infection in domestic ferrrets (Mustela putorius furo) have been described. However, clinical information on leishmaniosis in this species is limited A 15-month-old male neutered domestic ferret was presented with chronic weight loss and the presence of coalescent, erythematous and firm subcutaneous nodules in the ventral abdominal subcutis. A fine-needle aspiration of these nodules was performed and the cytological examination revealed a granulomatous inflammation with the presence of macrophages contained a number of oval organisms with an eccentric nucleus and pale cytoplasm, compatible with Leishmania spp. amastigotes compatible with Leishmania spp. amastigotes. The nodules were surgically excised and histological examination showed a severe multifocal pyogranulomatous panniculitis. Specific immunohistochemistry and qPCR for L. infantum from excised nodules were positive. Additionally, L. infantum was cultured and isolated from the nodules by a fine-needle aspiration. An in-house Western Blot test for L. infantum was performed in serum sample and a positive result was obtained. This is the first reported case of nodular pyogranulomatous panniculitis due to L. infantum infection in a domestic ferret. Further studies are necessary to determine the relevance of domestic ferrets in the transmission of leishmaniosis. The description of new clinical forms of the disease is important as it can assist veterinarians in identifying these new clinical presentations.
Subject(s)
Cat Diseases , Dog Diseases , Leishmania infantum , Leishmaniasis, Visceral , Panniculitis , Animals , Male , Cats , Dogs , Ferrets , Panniculitis/veterinary , Immunohistochemistry , Leishmaniasis, Visceral/diagnosis , Leishmaniasis, Visceral/veterinaryABSTRACT
The skin covers the external surface of animals, and it is constantly exposed to and inhabited by different microorganisms, including bacteria. Alterations in the skin barrier allow commensal and/or pathogenic bacteria to proliferate and penetrate deep into the lower layers of the skin. Being the first barrier to the external environment, the skin is prone to injuries, allowing the penetration of microorganisms that may lead to severe deep infections. Companion animals, especially dogs, are prone to bacterial infections, often secondary to allergic dermatitis. When environmental conditions are unfavorable, horses, cattle, sheep, and goats can develop superficial infections, such as those caused by Dermatophilus congolensis. Deep inflammation is commonly caused by Mycobacterium spp., which results in granulomatous to pyogranulomatous dermatitis and panniculitis. Likewise, bacteria such as Nocardia spp. and Actinomyces spp. can cause deep pyogranulomatous inflammation. Bacteria that lead to deep necrotizing lesions (eg, necrotizing fasciitis/flesh-eating bacteria) can be severe and even result in death. This review includes an overview of the most common cutaneous bacterial infections of domestic animals, highlighting the main features and histologic morphology of the bacteria, cutaneous structures involved, and the type of inflammatory infiltrates.
Subject(s)
Cattle Diseases , Dermatitis , Dog Diseases , Horse Diseases , Panniculitis , Sheep Diseases , Animals , Dogs , Horses , Cattle , Sheep , Skin/pathology , Dermatitis/veterinary , Animals, Domestic , Panniculitis/pathology , Panniculitis/veterinary , Inflammation/pathology , Inflammation/veterinary , Cattle Diseases/pathology , Dog Diseases/pathology , Horse Diseases/pathology , Sheep Diseases/pathologyABSTRACT
Saprophytic or non-tuberculous mycobacteria are ubiquitous in the environment. They can cause opportunistic infections when the skin is broken and typically manifest with draining sinus tracts or cutaneous nodules. This report details the first confirmed Mycobacterium smegmatis panniculitis in a cat in South Africa. Despite repeated treatment with methylprednisolone acetate for six months prior to diagnosis, the cat made an uneventful recovery once switched to doxycycline and marbofloxacin.
Subject(s)
Cat Diseases , Mycobacterium , Panniculitis , Cats , Animals , Methylprednisolone Acetate , Doxycycline , Panniculitis/drug therapy , Panniculitis/veterinary , Panniculitis/etiology , South Africa , Cat Diseases/drug therapyABSTRACT
Palisading granulomatous dermatitis and panniculitis is recognized in various cutaneous inflammatory lesions secondary to presumed collagen damage. Cutaneous nodules with a palisading arrangement of histiocytes surrounding foci of collagen degeneration have been clinically termed palisading granuloma in dogs. Study aims were to characterize the cellular infiltrate of canine palisading granuloma and document salient clinical features. Inclusion criteria were met for 36 dogs and encompassed nodular dermal and subcutaneous histiocyte-predominant cellular infiltrates targeting and enveloping collagen fibers/necrotic foci with palisading configurations. Infectious causes were ruled out via standard histochemical stains and/or clinical data. Medical records were reviewed for signalment, clinical features, treatment, outcome, and comorbidities. Immunohistochemistry (IBA1, CD204, E-cadherin) and Masson's trichrome stain were used to assess histiocytic populations and dermal collagen, respectively. The histiocytes had moderate or strong immunolabeling for IBA1 and CD204 in 36/36 dogs (100%) and mild positive immunolabeling for E-cadherin in 3/36 dogs (8%). Alteration of collagen was graded as moderate or strong in 32/36 dogs (89%) and mild in 3/36 dogs (8%). Large breeds predominated with 30/36 dogs (83%) being ≥23 kg. Focal nodules were identified in 31/36 dogs (86%). The head/face were involved in 19/36 dogs (53%) and the extremities in 18/36 dogs (50%). Lesions from the 5/36 dogs (14%) with multiple nodules contained prominent eosinophilic infiltrates. Following excision, there was no evidence of recurrence. In conclusion, palisading granulomas are a distinct, non-neoplastic, histiocyte-predominant inflammatory condition in dogs associated with altered dermal collagen and favorable prognosis.
Subject(s)
Autoimmune Diseases , Dermatitis , Dog Diseases , Panniculitis , Animals , Autoimmune Diseases/veterinary , Dermatitis/veterinary , Dogs , Granuloma/veterinary , Histiocytes , Panniculitis/veterinaryABSTRACT
Atypical mycobacterial panniculitis was diagnosed in a cat. Mycobacterium setense was identified as causative agent by 16 S rRNA gene sequence analysis. This a gram-positive rod-shaped acid-fast bacterium belonging to Mycobacterium fortuitum group was never reported before in diseased animals. Resistance to doxycycline and clarithromycin was detected. During treatment with pradofloxacin, additional resistance to fluoroquinolones developed which was due to a mutation in the gyrase gene gyrA (S90W exchange). Despite of antimicrobial treatment for 33 months the patient did not fully recover. Species identification and susceptibility testing for choosing adequate antimicrobial treatment is recommended in cases of feline mycobacterial panniculitis.
Subject(s)
Cat Diseases , Mycobacteriaceae , Mycobacterium , Panniculitis , Animals , Cat Diseases/diagnosis , Cat Diseases/drug therapy , Cats , Mycobacterium/genetics , Nontuberculous Mycobacteria , Panniculitis/diagnosis , Panniculitis/drug therapy , Panniculitis/veterinaryABSTRACT
Pseudomonas luteola, a pathogen causing disease in humans, has in animals been reported only in rainbow trout and ferrets. This case report describes pyogranulomatous panniculitis in a cat associated with P. luteola infection. Organisms were seen histologically and identified with PCR and sequencing. Lesions resolved after treatment with marbofloxacin.
Pseudomonas luteola, un pathogène de l'homme, a été décrit chez l'animal seulement chez le furet et la truite arc en ciel. Ce cas clinique décrit une panniculite pyogranulomateuse chez un chat associée à une infection à P. luteola. Les organismes ont été vus à l'examen histopathologique et identifiés par PCR et séquençage. Les lésions se sont résolues après un traitement à la marbofloxacine.
Pseudomonas luteola, un patógeno que causa una enfermedad en los seres humanos, se ha reportado en animales solo en truchas arco iris y hurones. Este caso clínico describe una paniculitis piogranulomatosa en un gato asociada con una infección por P. luteola. Los organismos se observaron histológicamente y se identificaron mediante PCR y secuenciación. Las lesiones se resolvieron después del tratamiento con marbofloxacina.
Pseudomonas luteola é um patógeno causador de doença em humanos e, em animais, há relatos de sua ocorrência apenas em furões e trutas arco-íris. Este relato descreve um caso de paniculite piogranulomatosa em um gato associada à infecção por P. luteola. Os microrganismos foram observados histologicamente e identificados por PCR e sequenciamento. As lesões foram resolvidas após tratamento com marbofloxacino.
Subject(s)
Cat Diseases , Panniculitis , Pseudomonas Infections , Animals , Cat Diseases/microbiology , Cats , Fluoroquinolones/therapeutic use , Panniculitis/drug therapy , Panniculitis/etiology , Panniculitis/microbiology , Panniculitis/veterinary , Pseudomonas , Pseudomonas Infections/complications , Pseudomonas Infections/drug therapy , Pseudomonas Infections/pathology , Pseudomonas Infections/veterinary , Treatment OutcomeSubject(s)
Dermatitis , Dog Diseases , Panniculitis , Animals , Dermatitis/veterinary , Dog Diseases/diagnosis , Dogs , Panniculitis/veterinaryABSTRACT
A 5-year-old male neutered domestic shorthair cat suffered from recurrent solitary nodules in different subcutaneous body regions. Nodules were surgically removed and each time histopathological diagnosis was fat necrosis and fibrosing to pyogranulomatous panniculitis. After the second surgery the alpha (α)-tocopherol concentration in serum of the cat was examined and the result (21 mg/L) exceeded the upper limit of the reference interval (3-11 mg/L). Vitamin E amount in diet fed solely in the past was checked as studies have shown that vitamin E amounts in food significantly influence vitamin E concentrations in serum. For comparative purposes, α-tocopherol concentrations were determined in sera of healthy control cats. Additionally, vitamin E amount in wet food from different manufacturers was analysed using gas chromatography coupled to mass spectrometry (GC-MS). The results showed that the diet did not have higher vitamin E amounts compared to other diets. All control cats had similar high serum α-tocopherol concentrations. We conclude that panniculitis can occur despite high serum α-tocopherol concentrations in cats. Further studies are needed to redefine reference values of α-tocopherol in serum of cats.
Subject(s)
Cat Diseases/diagnosis , Panniculitis/veterinary , alpha-Tocopherol/blood , Animals , Cat Diseases/etiology , Cats , Male , Panniculitis/diagnosis , Panniculitis/etiology , Serum/chemistryABSTRACT
A captive, adult female Brent goose (Branta bernicla) with a history of severe feather picking by its mate, was presented with 0.5-2.5 cm skin nodules on the head and neck. Histologic examination revealed a well-delineated dermal mass that surrounded an intact feather follicle and was composed of lakes of proteinaceous fluid and fibrin with scattered foamy macrophages and multinucleate giant cells. No bacteria or fungi were identified with histology, microbial culture, or PCR. Sterile panniculitis is an infrequent finding in animals and traumatic panniculitis is rarely sterile.
Subject(s)
Bird Diseases/diagnosis , Geese , Panniculitis/veterinary , Animals , Animals, Zoo , Bird Diseases/etiology , Bird Diseases/pathology , Female , Humans , Panniculitis/diagnosis , Panniculitis/etiology , Panniculitis/pathology , QuebecABSTRACT
A 4-year-old domestic shorthair cat was presented with a 7-month history of nodules and draining fistulous tracts of the ventral abdomen. Histopathological examination of affected tissue revealed acid-fast bacilli stained by the Ziehl-Neelsen procedure. Deep tissue culture confirmed infection with a rapidly growing mycobacterium, and gene sequencing characterized the organism as Mycobacterium porcinum. Treatment with pradofloxacin and doxycycline resulted in clinical resolution of the lesions. On continued antibiotic therapy 7 months later, there was no local recurrence nor were there clinical signs associated with distant spread of the infection. This is the first clinical description of a feline infection with this organism. Key clinical message: This is the first clinical description of mycobacterial panniculitis in a cat due to genetically characterized Mycobacterium porcinum. This case report highlights a disease entity that can present a diagnostic and therapeutic challenge to clinicians.
Panniculite chez un chat causée par Mycobacterium porcinum . Un chat domestique à poil court âgé de 4 ans fut présenté avec une histoire d'une durée de 7 mois de nodules et de trajets fistulaires drainants à l'abdomen ventral. Un examen histopathologique des tissus affectés a révélé la présence de bacilles alcoolo-acidorésistants par coloration de Ziehl-Neelsen. Une culture des tissus profonds confirma l'infection par des mycobactéries à croissance rapide, et le séquençage génétique caractérisa l'organisme comme étant Mycobacterium porcinum. Un traitement avec de la pradofloxacine et de la doxycycline permit une résolution clinique des lésions. Sept mois plus tard, à la suite d'une antibiothérapie continue, il n'y avait aucune récurrence locale ni de signe clinique associé avec une dissémination de l'infection. Ceci est la première description clinique d'une infection féline associée à ce microorganisme.Message clinique important :Ceci est la première description clinique d'une panniculite à mycobactérie chez un chat associée à Mycobacterium porcinum caractérisé génétiquement. Ce rapport de cas met en évidence une maladie qui peut représenter un défi diagnostique et de traitement pour les cliniciens.(Traduit par Dr Serge Messier).
Subject(s)
Cat Diseases/drug therapy , Mycobacterium , Panniculitis/drug therapy , Panniculitis/veterinary , Animals , Anti-Bacterial Agents/therapeutic use , Cats , DoxycyclineABSTRACT
Canine sterile pyogranulomatous dermatitis and panniculitis is an infrequently described syndrome. No autoantigen, or exogenous antigen, inflammatory stimulus has been identified. This syndrome is characterized by pyogranulomatous nodules, plaques, and ulcers of variable extent and severity. Prodromal and concurrent nonspecific clinical and hematologic signs of inflammation may occur. This waxing and waning condition is typically responsive to systemic immunomodulation. Lifelong therapy may be required to prevent relapse. Differential diagnoses include bacterial and fungal nodular dermatoses, neoplasia, and cutaneous reactive histiocytosis. Diagnosis is achieved via diagnostic exclusion of infectious causes and supportive histopathology findings.
Subject(s)
Dermatitis/veterinary , Dog Diseases/diagnosis , Granuloma/veterinary , Panniculitis/veterinary , Animals , Dermatitis/diagnosis , Dog Diseases/microbiology , Dogs , Granuloma/diagnosis , Panniculitis/diagnosis , Veterinary Medicine/trendsABSTRACT
Anti-neutrophil cytoplasmic antibody (ANCA) is a type of autoantibody against neutrophil cytoplasm. In veterinary medicine, few studies have reported the detection of ANCA in dogs, and most of these studies were performed in dogs with inflammatory bowel disease (IBD). The aim of this study was to evaluate whether ANCA is detected in dogs with immune-mediated inflammatory diseases (IMIDs) other than IBD. Serum samples were collected before treatment initiation from 40 client-owned dogs with various diseases and 22 healthy beagle dogs; the dogs were classified into two groups: IMID group (n = 16) and control group (n = 46). ANCA was detected using the indirect fluorescent antibody test. Of the 16 dogs in the IMID group, 13 (81.3%) tested positive for ANCA. In contrast, of the 46 dogs in the control group, 13 (28.03%) tested positive for ANCA. Moreover, a significant association between ANCA positivity and IMIDs was identified in the IMID group than in the control group (P = 0.0003). In the control group, however, dogs with bacterial infection showed a relatively high rate of ANCA positivity. Therefore, ANCA positivity was observed in dogs with both IMIDs and bacterial infection. This suggested that ANCA positivity is associated with diseases accompanied by neutrophil activation and infiltration.
Subject(s)
Antibodies, Antineutrophil Cytoplasmic/immunology , Autoimmune Diseases/veterinary , Dog Diseases/immunology , Animals , Antibodies, Antineutrophil Cytoplasmic/blood , Arthritis/blood , Arthritis/immunology , Arthritis/veterinary , Autoimmune Diseases/blood , Autoimmune Diseases/immunology , Case-Control Studies , Dog Diseases/blood , Dogs , Female , Fluorescent Antibody Technique, Indirect/veterinary , Male , Neutrophils/immunology , Panniculitis/blood , Panniculitis/immunology , Panniculitis/veterinaryABSTRACT
Canine nonepitheliotropic cutaneous T-cell lymphomas (NECTCL) are poorly characterized. In humans, a number of distinct subtypes of NECTCL have been recognized, including subcutaneous panniculitis-like T-cell lymphoma (SPTCL). Five dogs with subcutaneous T-cell lymphomas histologically similar to SPTCL in humans are herein described. The mean age was 8.5 years (5.5 to 12 years). No breed or sex predilection was identified in this small cohort. Two dogs presented with an acute onset of multiple skin masses and 3 dogs had solitary masses with subsequent development of multiple smaller masses within 0.5 to 2 months post-diagnosis without treatment. Locations, when specified, included shoulder, neck, and ventral abdomen. Two dogs were euthanized following diagnosis and one dog treated with chemotherapy (CCNU) survived 7 months post-diagnosis. Histologically, all cases were characterized by proliferations of either small to intermediate or large sized, CD3-positive T cells that infiltrated the subcutis in a lace-like pattern and frequently rimmed adipocytes. No epitheliotropism was observed, neoplastic cells were often karyorrhectic, and there were regions of extensive necrosis. Heavy infiltrates of histiocytes with prominent phagocytosis masked the lymphoid neoplastic cell population in some sections. A clonal T-cell receptor gamma gene rearrangement was found in 4 of the 5 cases. While SPTCLs typically have a less aggressive clinical course in humans, their biological behavior in dogs remains to be determined. In summary, SPTCL may represent a distinct entity in dogs and needs to be accurately diagnosed to better determine clinical behavior.
Subject(s)
Dog Diseases/pathology , Lymphoma, T-Cell/veterinary , Panniculitis/veterinary , Animals , Dog Diseases/classification , Dogs , Female , Lymphoma, T-Cell/classification , Lymphoma, T-Cell/pathology , Male , Panniculitis/classification , Panniculitis/pathology , Skin/pathologySubject(s)
Cat Diseases/pathology , Escherichia coli Infections/veterinary , Escherichia coli/isolation & purification , Panniculitis/veterinary , Tail , Tinea/veterinary , Animals , Cats , Diagnosis, Differential , Escherichia coli Infections/pathology , Female , Panniculitis/pathology , Pedigree , Tinea/pathologyABSTRACT
Next generation sequencing (NGS) studies are revealing a diverse microbiota on the skin of dogs. The skin microbiota of canine sterile granulomatous and pyogranulomatous dermatitis (SGPD) has yet to be investigated using NGS techniques. NGS targeting the 16S rRNA and ITS-1 region of bacterial and fungal DNA, respectively, were used to investigate if bacterial and fungal DNA were associated with skin lesions in cases of canine SGPD. The study included 20 formalin-fixed paraffin-embedded (FFPE) skin samples and 12 fresh samples from SGPD-affected dogs, and 10 FFPE and 10 fresh samples from healthy dogs. DNA was extracted from deep dermis and panniculus, and microbial DNA was amplified using primers targeting the bacterial 16S rRNA V1-V3 and fungal ITS-1 regions. The amplified DNA was utilized for NGS on an Illumina MiSeq instrument. The sequences were processed using QIIME. No differences in fungal or bacterial alpha diversity were observed between the SGPD and control samples. Beta diversity analysis demonstrated differences in the bacterial communities between SGPD and control, but not in the fungal communities. Compared to controls, the family Erysipelotrichaceae and genus Staphylococcus were significantly more abundant in the SGPD FFPE samples, and genus Corynebacterium were more abundant in fresh samples. The bacteria found to be more abundant in SGPD are common inhabitants of skin surfaces, and likely secondary contaminants in SGPD cases. This study provides additional evidence that SGPD lesions are likely sterile.
Subject(s)
Dermatitis/veterinary , Dog Diseases/pathology , Panniculitis/veterinary , Animals , DNA, Bacterial/genetics , DNA, Fungal/genetics , Dermatitis/microbiology , Dermatitis/pathology , Dog Diseases/microbiology , Dogs , Female , Granuloma/microbiology , Granuloma/pathology , Granuloma/veterinary , High-Throughput Nucleotide Sequencing , Male , Panniculitis/microbiology , Panniculitis/pathology , RNA, Ribosomal, 16S/genetics , Skin/microbiology , Skin/pathologyABSTRACT
A 2- to 4-year-old uncastrated male Siberian tiger (Panthera tigris altica) bred in a local wild animal park presented with generalized clinical signs including abdominal pain, fever, lethargy, and anorexia, along with subcutaneous nodules along the trunk. The patient subsequently died of chronic, progressive dyspnea despite 45 days of antibiotic treatment. At necropsy, mesenteric fat inflammation and multiple subcutaneous, peritoneal, and intraabdominal nodules were observed. The lungs demonstrated congestion and heavy coagulation, and necrotic foci were observed on the cut surface. Histopathologically, the nodules were identified as granulomatous fatty tissue with numerous lymphocytes, infiltration with lipid-laden macrophages, and fibrosis. These changes were also noted in the lung. The etiology of this condition remains undetermined.
Subject(s)
Lung/pathology , Lymph Nodes/pathology , Panniculitis/veterinary , Tigers , Animals , Animals, Zoo , Fatal Outcome , Male , Panniculitis/pathologyABSTRACT
Outpatient clinics, clinics, and veterinary hospitals in the state of São Paulo and other Brazilian states commonly prescribe broad-spectrum vermicidal agents. The prescriptions are not based on coproparasitological examination results and drugs, including those used for the elimination of enteric parasites, are not innocuous and can potentially cause health hazards. Therefore, we report a clinical case of drug-induced panniculitis caused by deworming and show the actual occurrence of endoparasites in canine and feline outpatients at HOVET-USP.(AU)
É prática corrente em ambulatórios, consultórios, clínicas e hospitais veterinários paulistas, por não dizer brasileiros, a prescrição de ativos com ação vermicida, no senso lato, sem o embasamento do, hoje até prosaico, exame coproparasitológico. É sabido há muito que todo e qualquer fármaco não é inócuo e pode potencialmente acarretar agravos à saúde, e dentre estes incluem-se os ativos destinados à erradicação de parasitos entéricos. Decidiu-se assim por se relatar um caso clínico de paniculite farmacodérmica decorrente de vermifugação, bem como situar a real ocorrência de endoparasitas em pacientes, caninos e felinos, trazidos para atendimento ambulatorial no HOVET-USP.(AU)
Subject(s)
Animals , Dogs , Anthelmintics/adverse effects , Drug Eruptions/veterinary , Panniculitis/veterinary , Parasite Egg Count/veterinaryABSTRACT
One of the largest river systems in South Africa, the Olifants River, has experienced significant changes in water quality due to anthropogenic activities. Since 2005, there have been various "outbreaks" of the inflammatory disease pansteatitis in several vertebrate species. Large-scale pansteatitis-related mortality events have decimated the crocodile population at Lake Loskop and decreased the population at Kruger National Park. Most pansteatitis-related diagnoses within the region are conducted post-mortem by either gross pathology or histology. The application of a non-lethal approach to assess the prevalence and pervasiveness of pansteatitis in the Olifants River region would be of great importance for the development of a management plan for this disease. In this study, several plasma-based biomarkers accurately classified pansteatitis in Mozambique tilapia (Oreochromis mossambicus) collected from Lake Loskop using a commercially available benchtop blood chemistry analyzer combined with data interpretation via artificial neural network analysis. According to the model, four blood chemistry parameters (calcium, sodium, total protein and albumin), in combination with total length, diagnose pansteatitis to a predictive accuracy of 92 percent. In addition, several morphometric traits (total length, age, weight) were also associated with pansteatitis. On-going research will focus on further evaluating the use of blood chemistry to classify pansteatitis across different species, trophic levels, and within different sites along the Olifants River.