Nasal chondromesenchymal hamartoma: radiographic and histopathologic analysis of a rare pediatric tumor.

Nasal chondromesenchymal hamartoma (NCMH) is an extremely rare benign pediatric tumor that was described in 1998. Only 19 cases are reported in the literature. We present a 15-year-old girl with nasal obstruction and recurrent sinusitis.