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Lipomas are common benign mesenchymal tumors composed of mature fat cells that may or may not be surrounded by a thin fibrous capsule. Lipomas involving the fingers are extremely rare but must be taken into account in the differential diagnosis of benign soft tissue masses of unusual localization. We describe a case of digital periungual lipoma.A 65-year-old Moroccan woman presented with a tumefaction of the right index finger reminiscent of a lipoma. There was no history of nail trauma, other lipomas on the body, or a family history of lipomatosis. She did not complain of any pain, but she had a slight limitation on the movement of the affected finger. Surgical excision was performed. Histological examination confirmed the diagnosis of lipoma. There was no recurrence after one year of follow-up.Lipomas of the fingers are extremely rare. To our knowledge, 6 cases of subungual localization and 4 cases in the lateral edge of the nail have been described in the literature. We report another case of unusual posterior periungual localization. In our case, the suspected diagnoses were either neurofibroma, superficial acral fibromyxoma, or giant cell tumor of the synovial sheaths of the tendons. Radiological examinations may be performed to aid diagnosis. Although finger lipomas are rare entities, they must be considered in the differential diagnosis of benign soft tissue masses of the finger. |
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