Chondromesenchymal hamartoma of sinonasal region in a young child: Computed tomography, MR imaging, and pathological findings with brief review

This report documents computed tomography and magnetic resonance imaging (MRI) findings for a case of sinonasal chondromesenchymal hamartoma and its recurrence occurring in an 11-year-old boy. We have described MRI dynamic contrast enhancement patterns in the recurrence of pathology, which, to the best of our knowledge, is the first documentation of such features. Sinonasal chondromesenchymal hamartoma is a rare pediatric benign hamartoma that can mimic aggressive inflammatory lesions or malignancies in the sinonasal region. A correct diagnosis is imperative to avoid unnecessary adjuvant therapy.