Plantar inclusion cyst: a review of the literature

Cystic lesions on the plantar surface of the foot are rare and usually a consequence of trauma. Patients generally present complaining of a firm ovoid or nodular mass under a weightbearing area that exhibits dull to exquisite tenderness upon direct pressure. A careful history often reveals past injury of varying severity with subsequent evolution of a gradually enlarging mass closely adjoining the area of insult. A frequently overlooked finding of interest is a mixed histologic picture with features common to both foreign body reactions as well as inclusion cysts.