Introduction: Adenoid cystic carcinoma (ACC) is a rare malignant neoplasm within the secretory glands of the head and neck. Clinical findings include a lump on the palate, tongue, or bottom of the mouth. Because symptoms can be mild, patients go for long periods of time without investigation. ACC is diagnosed using histology. Treatment is by surgical resection because there is no effective chemotherapy. Radiation can be effective adjuvant therapy, and proton therapy and stereotactic irradiation can be used for those who are ineligible for surgery. Immunotherapy has clinical activity for those with metastatic head and neck cancers who progress on proton therapy. This case reviews the use of immunotherapy in a patient with ACC.
Case presentation: A man in his 20s presented with a 6-month history of nasal congestion, epistaxis, and sinus tenderness. Noncontrast computed tomography of the sinuses revealed a mass of the lateral wall of the nasal cavity, lateral wall of the maxillary sinus, and pterygoid plates. Positron emission tomography confirmed metastatic disease in the right iliac crest and right cervical lymph node; biopsy of the nasopharynx confirmed ACC. The patient received proton therapy and intensity-modulated radiotherapy and completed 2 Phase 1 trails but continued to have progressive disease. The patient started nivolumab and died 12 weeks later.
Conclusion: The patient recently received proton therapy, intensity-modulated radiotherapy, and completed 2 Phase 1 trials but continued to have progressive disease.
Copyright © 2021 The Permanente Press. All rights reserved.