悪性と鑑別困難な小児小血管型筋肉内血管腫の1例

概要

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A case of intramuscular hemangioma was reported, because it was difficult to differentiate the tumor from malignant hemangioendothelioma. A 1 year and 9 month old male presented with a poorly defined, soft, smooth and tender mass measuring 3×4cm in the right lateral surface of the chest. The mass was excised with the adjacent muscle, because it was poorly demarcated. Histological examination demonstrated that it was an angiomatous tumor infiltrating into the striated muscle bundles and the endothelial cells had plumped nuclei and mitotic activity. According to these pathological findings, this tumor was suspected to be malignant hcmangioendothelioma by some pathologist. But this tumor was diagnosed as benign small vessel intramuscular hemangioma, because this was mainly composed of the endothelial cells and the small vessels of which the diameter was equal to the size of the red cell were predominantly seen. On follow up a year later, the patient was free of recurrence without radiation therapy and chemotherapy.
日本小児外科学会の論文
1982-12-20