PubMed · 7089931
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T Larssen, K Hvidsten, R Skaar, E B Velken, G Johannessen, J Johansen, S Haram. 1982-01-10. [Ultrasonically guided puncture].. https://pubmed.ncbi.nlm.nih.gov/7089931/
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Eight cats with visceral or cutaneous hemangiosarcoma were evaluated, and unusual metastatic and clinicopathologic behavior was evident in each. Cutaneous hemangiosarcoma is generally believed to be locally aggressive and slow to metastasize. These 8 cats with cutaneous hemangiosarcoma, however, developed metastatic disease after initial surgical resection; only 1 had local regrowth of the tumor. All cats with visceral hemangiosarcoma had metastasis at the time of diagnosis, which is consistent with cats of other reports. Three of 8 cats had evidence of disseminated intravascular coagulation, including increased prothrombin time and partial thromboplastin time, decreased number of platelets, and anemia. These potential complications need to be considered when planning diagnostic and treatment protocols.
This paper describes six cases of feline infectious peritonitis (FIP) in which an abdominal tumour had been suspected clinically. Pathological changes were mainly restricted to the massive enlargement of a mesenteric lymph node due to necrogranulomatous lymphadenitis. FIP was diagnosed on the basis of the immunohistological demonstration of coronavirus antigen in intact macrophages within the necrogranulomatous lesions. In the affected lymph node lymphoid tissue was either almost completely effaced or restricted to follicles composed mainly of variable numbers of blasts. From one to many plasma cells positive for coronavirus-specific antibodies were present in the marginal sinuses or capsules. In addition, necrogranulomas were present in the gut-associated lymphoid tissue of the caecum of one cat, and adjacent to the affected lymph node of another.
Signet cell carcinomas are often aggressive tumours. A patient with this tumour, originally located in the appendix, was diagnosed with peritoneal metastases. When she later got abdominal symptoms, computer axial tomography indicated large infiltrating tumour masses in the pelvis. However, when a laparotomy was performed, the only macroscopic tumour masses was localised to the ovaries (Krukenberg tumour). The surgical intervention gave the patient an improved quality of life, and most likely prolonged survival. We stress the importance of thinking of this possibility.