Nasal chondrogenic tumors: Case reports of primary chondroma and recurrence of atypical cartilaginous tumor (chondrosarcoma grade I) with review of the literature.

Nasal chondromas and nasal atypical cartilaginous tumors (or chondrosarcoma grade 1) are very rare chondrogenic tumors. Approximately 150 cases of nasal chondroma and fewer than 50 cases of nasal atypical cartilaginous tumors have been described. We reported a case with nasal chondroma in the right ethmoid area and a case with a nasal atypical cartilaginous tumor of the anterior septum. No chondroma recurrence was noted for 17 years after endoscopic resection. Recurrence was noted for the nasal atypical cartilaginous tumor 36 months after wide surgical excision via midfacial degloving. Revision surgery was performed again via midfacial degloving. Recurrences of nasal chondroma and atypical cartilaginous tumors are extremely rare. The current data indicate adequate surgical excision, in some cases even radical, as the most important parameter to avoid recurrence. For inoperable recurrent cases of atypical cartilaginous tumors, observation may be followed.