Macrodystrophia lipomatosa of finger-A rare case report.

Macrodystrophia lipomatosa is a rare form of nonhereditary congenital localized gigantism involving upper and lower limbs and is characterized by overgrowth of all the mesenchymal elements predominantly fibro-adipose component, in the distribution of a particular nerve, usually median nerve. It usually presents with progressive painless overgrowth of the involved limb, toe, or digit and is associated with macrodactyly. It might cause limitation of the movement of the involved part. Imaging has an important role in diagnosing this condition and differentiating it from malignant mimics. Imaging findings include hypertrophy of the mesenchymal elements of the involved digits and/or limbs predominantly fibro adipose component with associated overgrowth of the phalanges. In this case report, we present a case of unilateral involvement of index finger and thumb with associated macrodactyly.