Cytology of an Undifferentiated Carcinoma Developed in Athymic Nude Mice Inoculated With High Passages of a Pig Cell Line (PFT).
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Biomedical subjects
Publications and source records attributed to A Bundza.
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A 5-month-old minature Poodle dog had widespread cytoplasmic vacuolation of neurons in the central nervous system and foamy macrophages in the lung, spleen, renal lymph node, liver, adrenal gland and intestine. Concentric membranous cytoplasmic inclusions were seen in the neurons of the central nervous system by electron microscopy. There was no sphingomyelinase in the brain tissue. Sphingomyelin and cholesterol were increased in brain, kidney and liver. A diagnosis of Niemann-Pick Disease was based on absence of sphingomyelinase activity, as well as on histologic, histochemical and chemical findings.
Necropsy of a six year old female German Shepherd revealed the presence of a large oval mass in the thoracic cavity originating from the thickened proximal portion of the right fourth rib. Osteolytic osteosarcoma was diagnosed on the basis of gross appearance, presence of many pleomorphic spindle cells, containing pink stained intracytoplasmic granules in cytological preparations of impression smears of the tumor and histopathology. The tumor was considered highly malignant and was characterized by an abundant osteoblastic and connective tissue stroma with extreme cellular pleomorphism including giant cells, atypical mitoses and occasional trabeculae of tumor bone and osteoid. Metastases were found in the lung and spleen. Electron microscopy was carried out to support the diagnosis.
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