Tài liệu Báo cáo y học: "Spindle Cell Lipoma of the Hypopharynx"

Lipomas are the most frequently observed soft tissue tumors in adults. They commonly occur in the neck and on the trunk, and are frequently located at the subdermal, while rarely at the dermal tissue layer. They are commonly found at the dorsal neck, nape, shoulders, and the back1. Spindle cell lipoma was first defined by Enzinger and Harley in 1975 2. It is more frequently found in men between the ages of 40–60, and is a soft tissue tumor characterized by replace-ment of the mature fat tissue by spindle cell proliferation2,3. Although they are mostly solitary, well-capsulated, and slow-growing, they should be pathologically differentiated from liposarcomas.