title: Extrahepatic bile duct neurilemmoma mimicking Klatskin tumor.
abstract: Neurilemmoma rarely develops in the biliary tree. Here, we report a 39-year-old Iranian woman with neurilemmoma in the extrahepatic bile duct presenting with progressively deepening jaundice. On the basis of clinical and radiological features, this tumor was initially suspected as Klatskin tumor. Histologically, the tumor was a typical neurilemmoma. Immunostaining showed that tumor cells were strongly and diffusely positive for S-100 protein, which supported the diagnosis of neurilemmoma. Neurilemmoma should be considered in the differential diagnosis of obstructive jaundice.
authors: Department of Surgery, Taleghani Hospital, Shaheed Beheshti University of Medical Sciences, Tehran, Iran.
authors: Fereshteh
authors: F
authors: Kamani
authors: Atosa
authors: A
authors: Dorudinia
authors: Farhood
authors: F
authors: Goravanchi
authors: Farzaneh
authors: F
authors: Rahimi
mesh_terms: D000328:Adult; D001650:Bile Duct Neoplasms / Q000150:complications / Q000175:diagnosis*; D017734:Bile Ducts, Extrahepatic; D005260:Female; D006500:Hepatic Duct, Common; D006801:Humans; D007150:Immunohistochemistry; D041781:Jaundice, Obstructive / Q000209:etiology*; D018285:Klatskin Tumor / Q000175:diagnosis*; D009442:Neurilemmoma / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D009418:S100 Proteins / Q000378:metabolism
chemical_list: D009418:S100 Proteins