title: Adenoid squamous cell carcinoma of the penis. Report of a surgical case clinically manifested with rapid lung metastasis.
abstract: A surgical case of an aggressive form of adenoid squamous cell carcinoma of the penis was studied. The histological features of the tumor originating from the coronal region of the penis showed a well differentiated keratinized squamous cell carcinoma in the superficial area, which transformed into, with a zone of transition in between, an alveolar structure in the deep invading portion and in the metastatic tumor in the inguinal lymph nodes. The alveolar lining cells exhibited an undifferentiated appearance with prominent nucleoli, frequent mitotic figures, and vascular invasion. These cells were neither dyskeratotic nor acanthotic as described in the literatures. Mucin was negative in the tumor cells and angiosarcoma was ruled out with a silver impregnation technique. The patient took a rapid downhill course for the ordinary squamous cell carcinoma of the penis, and he expired eight months after penile amputation with a radiological evidence of lung metastasis. These unusual pathological features and an aggressive behavior of this tumor which were not hitherto described for adenoid squamous cell carcinomas necessitated this report. Autopsy was not performed.
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology* / Q000601:surgery; D002294:Carcinoma, Squamous Cell / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008175:Lung Neoplasms / Q000556:secondary*; D008297:Male; D008875:Middle Aged; D010412:Penile Neoplasms / Q000473:pathology* / Q000601:surgery