This case report describes a metastatic small cell neuroendocrine carcinoma (SCNC) of the right maxillary sinus, which first manifested as atypical low back pain. Due to the rarity of this localization, specific therapeutic recommendations for SCNC of paranasal sinuses are still lacking. Current treatment modalities are extrapolated based on similar tumors of pulmonary origin. This contribution comprises a case description, along with a review of clinical presentations, imaging characteristics, and treatments available to date. This article will eventually end with a series of practical recommendations.
Small cell neuroendrocrine carcinoma, paranasal sinus, extra-pulmonary, metastatic