Lipoma of the finger presenting as restricted motion

A 35 year-old female patient visited our outpatient clinic with a protruding skin lesion on the right index finger that caused discomfort with movement [Figure 1]. The patient reported that the lesion had started growing 12 months ago. Physical examination showed a 1.5 x 1.0 cm, nontender, subcutaneous mass on the radial side of the proximal phalanx associated with limitation of proximal interphalangeal joint motion; sensory symptoms were not present. The patient underwent an exploration of the finger under local anaesthesia using a longitudinal skin incision. There was no difficulty in excising the mass and its margins were free. The mass was excised completely and subjected to a histopathology examination. After surgery, the patient had fully recovered the motion of the finger. Grossly, the mass was 1.5 x 1.0 cm in size and was composed of fatty tissue [Figure 2]. Histological results showed that the mass was a lipoma. There was no evidence of recurrence or restriction in motion during the 36 months of postoperative follow-up and excellent range of motion [Figure 3].