Lymphangioma is a benign tumor of lymphatic origin. Lymphangioma can occur anywhere in the body and only rarely affects the intestinal tract. Most intestinal lymphangiomas are asymptomatic and detected incidentally at autopsy or surgery. Occasionally, they may be large enough to present as a mass to cause obstruction or intussusception. Recently, we examined a case of a 27-year-old woman who complained right upper quadrant abdominal pain, increased bowel sound and weight loss. By surgical resection after the double contrast barium enema and colonoscopy, we could confirm cystic lymphangioma of the transverse colon. So we report this case with brief review of relevant literature.
Abdominal Pain ; Adult ; Autopsy ; Barium ; Colon* ; Colon, Transverse ; Colonoscopy ; Enema ; Female ; Humans ; Intussusception ; Lymphangioma ; Lymphangioma, Cystic* ; Weight Loss

We would like to report a case of bovine lymphosarcoma. Parous cattle from a livestock farmhouse were examined for mutinodular masses in the abdominal cavity after slaughter. For clinical signs, animals presented mild leukemic signs but did not have viral or bacterial infection. Grossly, whitish to yellowish smooth masses similar to fat tissue were covered with a thin membrane. A multilobulated mass formed around the arteri, and there was a large quantity of reddish fluid on the cut surface. Histopathologically, a monomorphic population of lymphocytes was observed along with small amounts of cytoplasm, round nuclei with coarsely granular chromatin, and numerous mitotic figures in the samples. In the tumor lesion, uniformly round cells had invaded with abundant neovascularization. Especially, the immunohistochemical phenotype of tumor cells was positive for anti-CD3 and negative for anti-CD8 and anti-CD20. Therefore, morphological analysis diagnosed the mass as a multinodular bovine lymphosarcoma of T-cell origin without any sign of infection by a viral agent.
Abdominal Cavity ; Animals ; Bacterial Infections ; Cattle* ; Chromatin ; Cytoplasm ; Enzootic Bovine Leukosis ; Livestock ; Lymphocytes ; Lymphoma, Non-Hodgkin* ; Membranes ; Phenotype ; T-Lymphocytes*

Cholangiocarcinoma is a relatively rare neoplasm in animals and humans. A four-year-old, neutered male ferret presented with depression, anorexia, cachexia, diarrhea, and icterus. Necropsy findings included ascites, multiple white nodules on the surface of the liver, stomach, and duodenum, gross enlargement of the bile duct and right atrium, hemorrhage of the gastric and duodenal mucosa, and icterus of the mesenteric fat. Infiltrative well-differentiated neoplastic biliary epithelial cells forming ducts and acini with a prominent collagenous stroma were observed on microscopic examination of neoplastic lesions within the liver, mesentery, and the serosa of the stomach and duodenum. This is a report on a rare case of obstructive jaundice due to cholangiocarcinoma in a ferret.
Animals ; Anorexia ; Ascites ; Bile Ducts ; Cachexia ; Cholangiocarcinoma* ; Collagen ; Depression ; Diarrhea ; Duodenum ; Epithelial Cells ; Ferrets* ; Heart Atria ; Hemorrhage ; Humans ; Jaundice ; Jaundice, Obstructive ; Liver ; Male ; Mesentery ; Mucous Membrane ; Neoplasm Metastasis ; Serous Membrane ; Stomach

We would like to report a case of leiomyoma of the ovaries in a dog. Leiomyoma is commonly seen in the vagina in dogs. However, it is a very rare neoplasm in the ovaries. As there have only been a few reported cases, this report provides valuable information on veterinary medicine and pathology. Masses found in the ovaries need to be differentiated from other ovarian tumors. Therefore, we describe the gross, histopathological, and immunohistochemical features of a case of ovarian leiomyoma in a 10-year-old female Yorkshire Terrier dog. The mass on the right of the uterus was found accidentally by pelvic ultrasonography. Laparatomy revealed a large multi-nodulated ovarian mass. Grossly, cut surfaces of the mass showed multiple firm whitish nodules in the cortex and bloody loose connective tissue in the medulla. Histopathologically, the cortex of the mass was composed of spindle cells forming interlacing fascicles. The cells had elongated, blunt-ended nuclei and eosinophilic cytoplasm as detected by hematoxylin and eosin staining. Immunohistochemical stained sections were immunoreactive for alpha-smooth muscle actin and desmin but negative for vimentin and S-100. Therefore, differential diagnosis confirmed leiomyoma based on morphology and positive staining for alpha-smooth muscle actin and desmin.
Actins ; Animals ; Child ; Connective Tissue ; Cytoplasm ; Desmin ; Diagnosis, Differential ; Dogs* ; Eosine Yellowish-(YS) ; Eosinophils ; Female ; Hematoxylin ; Humans ; Leiomyoma* ; Ovary* ; Pathology ; Ultrasonography ; Uterus ; Vagina ; Veterinary Medicine ; Vimentin