Lipoma of the Thumb: Spindle Cell Subtype

Abstract

We report hereby the case of a 61-year-old man who presented with a soft-tissue swelling on the palmar aspect of the thumb. A detailed clinical examination followed by ultrasonography and excisional biopsy confirmed a spindle cell lipoma. Lipomas are rare in the hand and exceptional in the fingers, and we report, to our knowledge, the first spindle cell lipoma in the thumb to help in the differential diagnosis of a similar swelling.

Lipoma of the middle finger

“…[ 8 ] Differential diagnosis based on imaging characteristics includes neoplastic and non-neoplastic lesions, such as giant cell tumor, implantation cyst, and spindle cell lipoma. [ 9 , 10 ] Lipomas usually don’t require treatment. However, if the lipomas cause pain or restrict joint movement, surgical resection is recommended.…”

Lipoma of the Middle Finger: A Case Report

“…Lipomas are the most common type of benign mesenchymal tumors. 1 They usually present as asymptomatic soft-tissue masses and sometimes result in symptoms such as pain and functional impairment when they compress surrounding structures, depending on the size and location. 2 Although lipomas can be found anywhere in the body, especially in the upper back, neck, shoulder, and abdomen, they are rarely found in fingers.…”

A Painless Restricted Motion of the Thumb: What Etiology? About An Uncommon Tumor in Uncommon Localization

“…The index and middle fingers were most commonly involved [3]. Therefore, its localization in the thumb is extremely rare [3][4][5]. Herein, we report a rare case of a variant of lipoma localized in the thumb.…”

“…Spindle cell lipoma is a type of lipoma that presents 1.5% of total adipocyte tumors [2]. The index and middle fingers were most commonly involved [3]. Therefore, its localization in the thumb is extremely rare [3][4][5].…”