Lipoma Arborescens in Bicipitoradial Bursae: A Rare Anterior Painful Elbow Swelling with Dual Morphology

Lipoma arborescens (LA) is a benign rare synovial neoplasm characterized by hyperplastic proliferation of fatty tissue that replaces the subsynovial connective tissue layer. Lipoma arborescens usually grows inside the joints, but it is also rarely found inside a bursae. This is a case of LA inside bicipitoradial bursae of a 50 years lady. Although six cases of LA in bicipitoradial bursae had been previously described in literature, this case is unique as features of two different types of morphology documented in the same lipoma. Here, in this write-up we describe common clinical features and sonographic findings LA in a middle-aged Bangladeshi woman.