Macrodactylia / Macrodactylism / Localised gigantism
Rare congenital deformity of the digits where there is an enlargement of one or more toes (usually adjacent).
Cause unknown – may be related to hyperplastic vascular and lymphatic elements.
Most occur as an independent deformity, but is can be associated with general syndromes. Eg neurofibromatosis.
Large amounts of fat are seen in the bone marrow, dermis and muscle; periosteal thickening is common; tendon size is usually normal
Ingrown nails are common due to large fleshy nail folds.
Treatment is by partial amputation or reduction of soft tissue masses.