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Middle turbinate chondro-osseous respiratory epithelial adenomatoid hamartoma. Objective: Chondroosseous respiratory epithelial adenomatoid hamaroma (COREAH) is an extremely rare, developmental malformation. COREAH is characterized by a spectrum of chondro-osseous metaplasia that arise from the mesenchymal stroma, and it includes dilated submucosal glands lined with respiratory epithelium. This case report aimed to describe a COREAH that originated in the nasal cavity.
Case Report: A 68-year-old woman presented with unilateral nasal obstruction. Endonasal and radiological findings suggested a diagnosis of an unilateral inflammatory polyp. However, after excision of the mass with endoscopic guidance, a histological examination supported a final diagnosis of a nasal COREAH.
Conclusion: To our knowledge, this was the first description of a COREAH that originated from the middle turbinate and presented as a choanal polyp. The role of the pathologist is essential for a correct diagnosis.