Fine-needle aspiration cytology of mesenchymal hamartoma of the chest wall

We report on an uncommon entity, the so-called "chest wall chondromatous ha martoma" or "mesenchymal hamartoma of the chest wall"(MHCW), diagnosed by f ine-needle aspiration (FNA) cytology in a 6-mo-old boy. Radiologic features were those of an aggressive lesion with rib expansion and destruction, tha t contrasted with aspirate smears showing bland cartilage and spindled mese nchymal elements. The clinicoradiographic features together with the FNA yi eld of mixed cellular elements aided in the correct diagnosis of MHCW. Diag n. Cytopathol. 2000;22:33-38. (C) 2000 Wiley-Liss, Inc.