A CASE OF MESENCHYMAL HAMARTOMA IN A 9-YEAR-OLD BOY

This case of mesenchymatous hamartoma in a nine-year-old boy, was an i ncidental finding on a chest X ray. CT and MRI suggested the diagnosis showing a large (9 x 11 x 14 cm) mass developped in the right lower l ung with sharp margins, without any sign of pulmonary or mediastinal c ompression. This lesion contained fatty areas on both CT and MRI. It s howed no calcification. It enhanced slightly after IV contrast. On T2 WI, it appeared lobulated with low signal intensity septa. Presence of fatty tissues and lobulated margins were suggestive of the diagnosis of mesenchymatous hamartoma. A 1.2 kg mass was surgically removed. The tumor was attached to the right lower lobe by a small pedicle. Pathol ogical examination disclosed fatty and connective tissues. This rare o bservation shows a good correlation between CT, MR, surgery and pathol ogical examination.