A hamartoma is a tumorlike lesion that results from excessive growth of tissues that are indigenous to the site of origin. Although hamartomas are not unusual in the head and neck region, their occurrence in the nasal cavity is quite rare; NCMH, which is a proliferation of mesenchymal and cartilaginous elements, is one of these rare nasal hamatomas. The pathogenesis of NCMH is poorly understood but is suspected to be an embryologic rest derivative.1 The lesion may be an upper respiratory tract analogue of a chest wall mesenchymal hamartoma that is found in infants and children.
Pathology Quiz Case 2: Diagnosis. Arch Otolaryngol Head Neck Surg. 2009;135(9):947-948. doi:10.1001/archoto.2009.102-b