ABSTRACT
Objetivo: Describir el diagnóstico y la resolución de un caso clínico de schwannoma maligno mandibular, una neopla- sia extremadamente rara en la región maxilofacial y con alto porcentaje de mortalidad. Caso clínico: Un paciente masculino de 56 años de edad acudió a la consulta por trismus, dolor y no cierre de la herida posextracción en maxilar inferior, con una evolución de tres meses. Se le solicitó una tomografía computada que evidenció lesión osteolítica y pieza dentaria retenida en la zona afectada. Se realizó la biopsia excisional. El diagnósti- co fue schwannoma maligno mandibular. Nueve meses des- pués del tratamiento quirúrgico y coadyuvante, el paciente falleció. Conclusiones: La derivación a un especialista y el análisis histopatológico tempranos permiten diagnosticar a tiempo este tipo de neoplasias. El schwannoma maligno es una enfermedad agresiva, con una tasa de supervivencia baja, pero la intervención oportuna y el diagnóstico precoz mejoran el pronóstico y la sobrevida del paciente (AU)
Aim: Describe the diagnosis and resolution of a clini- cal case of malignant mandibular schwannoma. An extremely rare neoplasm in the maxillary facial region, and with a high percentage of mortality. Clinical case: A 56-year-old male patient attended the consultation due to trismus, pain and non-closure of the post-extraction wound in the lower jaw, with an evolution of three months. He was asked for a computed tomography scan, that showed an osteolytic lesion and retained tooth in the af- fected area. Excisional biopsy is performed. The diagnosis was malignant mandibular schwannoma. After surgical and adjuvant treatment, the patient dies nine months later. Conclusion: Early referral to a specialist and histo- pathological analysis will allow to diagnose this type of neoplasms early. Malignant schwannoma is recorded as an aggressive disease with a low survival rate, but timely inter- vention and early diagnosis improves the prognosis and pa- tient survival (AU)
Subject(s)
Humans , Male , Middle Aged , Mandibular Neoplasms , Neurofibrosarcoma/surgery , Neurofibrosarcoma/diagnosis , Argentina , Prognosis , Biopsy , Neurofibrosarcoma/mortality , Neurofibrosarcoma/diagnostic imaging , Oral Surgical Procedures , Dental Service, HospitalABSTRACT
Background: Spirocercosis is a parasitic infection caused by Spirocerca lupi. This pathology affects canid carnivores, especially domestic dogs. Early diagnosis has been proven challenging and most infected animals are diagnosed when disease is in advanced stage. Exams such as computed tomography scans or radiographs can aid in disease confirmation. Radiographic exam frequently reveals the presence of a mass located in mediastinal region, which can be erroneously diagnosed as pulmonary mass. The aim of this study was to report the differential diagnosis between paraesophageal granuloma, possibly due to spirocercosis, and pulmonary metastasis in a dog with a history of neurofibrosarcoma.Case: A 8 year-old male Cocker Spaniel dog, weighing 17.4 kg, was presented with anterior limb suspension and a recurrent nodule of 2.0 cm diameter, located on the main pad, with previous diagnosis of neurofibrosarcoma (malignant Schwannoma). Routine evaluation work-up included thoracic radiographs and abdominal ultrasound for clinical staging, electrocardiogram, complete blood count (CBC), coagulogram, renal and hepatic function tests, with results within the normal range for the species. The dog submitted to left anterior limb amputation due to recurrent neurofibrosarcoma in the carpal region. Histopathological exam confirmed recurrent neurofibrosarcoma without vascular invasion. Considering neoplasm biological behavior and clean surgical margins, only routine follow-up was established, with clinical exams. The dogwas presented to the Veterinary Hospital five months after surgical treatment and it was presented with fever, prostration, and history of vomiting. Radiographic exam showed a circumscribed mass in caudal mediastinal area. Computed tomography scan was performed to best evaluate the mass and the result was compatible with paraesophageal abscess.[...]
Subject(s)
Male , Animals , Dogs , Esophagus , Granuloma/diagnostic imaging , Spirurida Infections/veterinary , Neoplasm Metastasis , Neurofibrosarcoma/diagnostic imaging , Thelazioidea , Parasitic Diseases, Animal/diagnostic imaging , Lung Neoplasms/diagnostic imagingABSTRACT
Background: Spirocercosis is a parasitic infection caused by Spirocerca lupi. This pathology affects canid carnivores, especially domestic dogs. Early diagnosis has been proven challenging and most infected animals are diagnosed when disease is in advanced stage. Exams such as computed tomography scans or radiographs can aid in disease confirmation. Radiographic exam frequently reveals the presence of a mass located in mediastinal region, which can be erroneously diagnosed as pulmonary mass. The aim of this study was to report the differential diagnosis between paraesophageal granuloma, possibly due to spirocercosis, and pulmonary metastasis in a dog with a history of neurofibrosarcoma.Case: A 8 year-old male Cocker Spaniel dog, weighing 17.4 kg, was presented with anterior limb suspension and a recurrent nodule of 2.0 cm diameter, located on the main pad, with previous diagnosis of neurofibrosarcoma (malignant Schwannoma). Routine evaluation work-up included thoracic radiographs and abdominal ultrasound for clinical staging, electrocardiogram, complete blood count (CBC), coagulogram, renal and hepatic function tests, with results within the normal range for the species. The dog submitted to left anterior limb amputation due to recurrent neurofibrosarcoma in the carpal region. Histopathological exam confirmed recurrent neurofibrosarcoma without vascular invasion. Considering neoplasm biological behavior and clean surgical margins, only routine follow-up was established, with clinical exams. The dogwas presented to the Veterinary Hospital five months after surgical treatment and it was presented with fever, prostration, and history of vomiting. Radiographic exam showed a circumscribed mass in caudal mediastinal area. Computed tomography scan was performed to best evaluate the mass and the result was compatible with paraesophageal abscess.[...](AU)