title: Hepatic angiomyolipoma growing to cause epigastric discomfort: a case report.
abstract: We report herein a case of hepatic angiomyolipoma growing to cause epigastric discomfort. A 33-year-old man was referred for excisional operation of hepatic hypervascular tumor, complaining of epigastric discomfort. The tumor had enlarged from the time 3 years before when the tumor was diagnosed as hepatic hemangioma in the lateral segment. Partial hepatectomy with tumor resection was carried out. Pathological diagnosis was confirmed as hepatic angiomyolipoma with a finding of enriched vessels, extramedullary hematopoiesis, fatty tissue, and most epithelioid cells immunoreactive to HMB-45. Further analysis also revealed positive staining cells for granulocyte colony-stimulating factor. It was suggested that growth of hepatic angiomyolipoma in this case might be caused by extramedullary hematopoiesis induced by granulocyte colony-stimulating factor.
authors.affiliation: Second Department of Surgery, Dokkyo Medical School Koshigaya Hospital, Koshigaya, 343-8555, Japan, myamag@hotmail.co.jp.
authors.forename: Masahiko
authors.initials: M
authors.lastname: Yamaguchi
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Ueda
authors.forename: Takao
authors.initials: T
authors.lastname: Suzuki
mesh_terms: D000328:Adult; D018207:Angiomyolipoma / Q000150:complications* / Q000473:pathology; D006801:Humans; D008113:Liver Neoplasms / Q000150:complications* / Q000473:pathology; D008297:Male; D013272:Stomach Diseases / Q000209:etiology*