Skull Parosteal Lipoma with Reactive Hyperostosis: A Case Report

被引：2

作者：

Murakami, Mamoru ^{[1
]}

Hirai, Makoto ^{[1
]}

Sakakibara, Takehiko ^{[1
]}

Yamaki, Tarumi ^{[1
]}

Kusuzaki, Katuyuki ^{[2
]}

机构：

[1] Kyoto Kujo Hosp, Dept Neurosurg, Kyoto 6018453, Japan

[2] Kyoto Kujo Hosp, Dept Orthopaed Surg, Kyoto 6018453, Japan

来源：

NEUROLOGIA MEDICO-CHIRURGICA | 2014年 / 54卷 / 04期

关键词：

parosteal lipoma; skull; hyperostosis; liposarcoma;

D O I：

10.2176/nmc.cr2012-0290

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

A 50-year-old female presented with more than 20-year history of a large subcutaneous mass in the left parieto-occipital portion. Magnetic resonance (MR) imaging revealed the lipomatous mass to show a high signal intensity in both T-1- and T-2-weighted images. A part of the lipomatous lesion progressed into the underlying hyperostosis and skull. The preoperative diagnosis was skull invasion of a well-differentiated liposarcoma. The tumor was removed completely, including the underlying hyperostosis and skull. Microscopy confirmed a lipoma without any lipoblasts, which was firmly attached to the reactive hyperostosis, and islands of lipoma were involved in the underlying hyperostosis and skull cortex. A pathological diagnosis of parosteal lipoma with reactive hyperostosis was made. Long-term progression of parosteal lipoma may cause to involve the underlying hyperostosis and skull, and led to the diagnosis of invasion of a malignant tumor on MR imaging.

引用

页码：314 / 316

页数：3