Table 1.

Differential Diagnosis, Congenital Nasopharyngeal Mass (CNM).

Type of Neoplasm Differential Diagnosis
Benign Neoplasm Adenoid tissue or retention cyst*
Aneurysmal bone cyst
Angiofibroma
Antrochoanal polyp*
Ectopic pituitary
Fibrous dysplasia
First branchial pouch cyst*
Giant cell tumor
Hairy polyp*
Hemangioma
Heterotopic brain tissue (e.g. cephalocele, glioma)
Mucocele*
Pleomorphic adenoma
Pyogenic granuloma*
Salivary hamartoma
Sinonasal polyp*
Teratoma (can be malignant)
Thornwaldt cyst*
Malignant Neoplasm Carcinoma
Esthesioneuroblastoma
Hematological malignancies (e.g. lymphoma, leukemia)
Metastases (e.g. neuroblastoma)
Rhabdomyosarcoma
*Cystic/Polypoid benign neoplasm
RMMJ Rambam Maimonides Medical Journal Rambam Health Care Campus 2022 January; 13(1): e0006. ISSN: 2076-9172
Published online 2022 January 27. doi: 10.5041/RMMJ.10463