Precalcaneal congenital fibrolipomatous hamartoma: a report of four cases.

Four infants had soft, skin-colored nodules in the midline plantar region of the heels since birth. The lesions were asymptomatic, bilateral, and symmetric, and measured approximately 1 cm in diameter. Their size increased in proportion to the growth of the child. In three infants the lesions persisted at 1 year of age, while in the fourth they remained at age 12 years. The nodules were not associated with any other disease or abnormality. A review of the literature revealed only one Argentinean series comprising four cases, and two communications at international pediatric congresses by French and American authors who reported five and three cases, respectively. We describe four additional cases of precalcaneal congenital fibrolipomatous hamartoma and comment on their histopathologic and ultrastructural characteristics.