title: Syringocystadenocarcinoma papilliferum with locoregional metastases.
abstract: Syringocystadenocarcinoma papilliferum (SCACP) is a rare malignant counterpart of syringocystadenoma papilliferum (SCAP). To date, less than 30 cases have been reported, and of those, only three had locoregional metastases [1,2]. Herein, we report a case of a 42-year-old man with a rapidly growing nodule on his right parietal scalp ultimately diagnosed as SCACP arising in association with a preexisting SCAP and nevus sebaceus. This case differs from prior reports in the tumor's rapid growth and aggressive course with the development of locoregional metastases within 5-weeks from initial presentation.
authors.affiliation: United States Navy.
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Satter
authors.forename: Derek
authors.initials: D
authors.lastname: Grady
authors.forename: Caroline T
authors.initials: CT
authors.lastname: Schlocker
mesh_terms: D000328:Adult; D018283:Cystadenocarcinoma, Papillary / Q000473:pathology* / Q000601:surgery; D004817:Epidermis / Q000473:pathology; D006258:Head and Neck Neoplasms / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008207:Lymphatic Metastasis; D008297:Male; D009506:Nevus / Q000473:pathology; D012535:Scalp / Q000473:pathology* / Q000601:surgery; D012627:Sebaceous Glands / Q000473:pathology; D012878:Skin Neoplasms / Q000473:pathology* / Q000601:surgery