title: A case of sinusoidal hemangioma with lipoma.
abstract: Sinusoidal hemangioma is a distinctive subset of a group of lesions known collectively as cavernous hemangiomas. Clinically, it develops in adults, predominantly females, and presents as a solitary, painless, bluish, deep dermal or subcutaneous nodule. Lipoma is the most common benign soft tissue tumor. Lipoma is distinguished from sinusoidal hemangioma on both clinical and histological grounds. Several studies have suggested that adipocytes originate from perivascular cells during adipogenesis. Angiogenic cytokines released by adipocytes play a role in the vasoproliferative response. The rearrangement or loss of chromosome 13 can also be associated with hemangioma. However, no previous cases of sinusoidal hemangioma have been associated with benign tumors like lipoma. Here, we describe an unusual case of sinusoidal hemangioma that occurred together with a lipoma on the right upper arm of a 43-year-old male.
authors.affiliation: Department of Dermatology, Hallym University Sacred Heart Hospital, Anyang, Korea.
authors.forename: Byong Han
authors.initials: BH
authors.lastname: Song
authors.forename: Sung Hwan
authors.initials: SH
authors.lastname: Youn
authors.forename: Eun Joo
authors.initials: EJ
authors.lastname: Park
authors.forename: In Ho
authors.initials: IH
authors.lastname: Kwon
authors.forename: Kwang Ho
authors.initials: KH
authors.lastname: Kim
authors.forename: Kwang Joong
authors.initials: KJ
authors.lastname: Kim