Intramyofiber metastases in skeletal muscle.
Autopsy examination in a case of metastatic carcinoma revealed psoas muscle invasion with nests of tumor cells within individual myofibers. Such findings suggest that there is an intracellular route for the spread of malignant tumor in skeletal muscle.
D018288:Carcinoma, Small Cell / Q000473:pathology*; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009135:Muscular Diseases / Q000473:pathology*; D009362:Neoplasm Metastasis