Malignant peritoneal mesothelioma in a dog

The article describes an uncommon case of peritoneal mesothelioma in an 8 year old male German Shepherd dog. The patient was presented for lethargy, progressive cachexia, abdominal distension with palpation sensitivity and swelling of the scrotum. After routine physical examination followed by essential bloodwork and both radiology and ultrasonography of the abdomen, an exploratory celiotomy and surgical biopsy was suggested. Since client gave an authorization, surgery was performed and samples obtained. Then, final diagnosis of malignant mesothelioma was established based on histopathology and immunohistochemistry and patient was euthanasized in day 14 following surgery upon owner's request for general progression and poor prognosis. Necropsy performed afterwards confirmed the diagnosis with the progression. Discussion deals with diagnostic tools and pitfalls of treatment options.