Nasopharyngeal Follicular Dendritic Cell Sarcoma: Diagnostic Challenges and Therapeutic Management.

Follicular dendritic cell sarcoma (FDCS) is an extremely rare malignancy arising from follicular dendritic cells accounting for less than 0.4% of all soft tissue sarcomas. While it can manifest in various anatomical locations, its occurrence in the nasopharynx is particularly uncommon with only 10 reported cases in the English literature. This case report describes a 45-year-old woman who complained of persistent neck swelling, nasal obstruction, and left ear fullness. Imaging showed a nasopharyngeal process and cervical lymphadenopathy. Biopsies confirmed FDCS. Treatment included chemotherapy and radiation, resulting in a favorable outcome with no recurrence during 2 years of follow-up.