Lamia Buohliqa1, Smita Upadhyay1, Piero Nicolai2, Robert Cavalieri3, Ricardo L L Dolci1, Daniel Prevedello1,4, Ricardo L Carrau1,4. 1. Department of Otolaryngology-Head and Neck Surgery, Wexner Medical Center at The Ohio State University, Columbus, Ohio. 2. Department of Otolaryngology-Head and Neck Surgery, University of Brescia, Brescia, Italy. 3. Department of Medical Oncology, Neuro-Oncology Division, Wexner Medical Center at The Ohio State University, Columbus, Ohio. 4. Department of Neurosurgical Surgery, Wexner Medical Center at The Ohio State University, Columbus, Ohio.
Abstract
BACKGROUND: Local recurrence, and regional and distant metastases, respectively, develop in 30% and 15% of patients with esthesioneuroblastoma (ENB). METHODS: This case report includes 3 patients with unusual recurrences of ENB in the sinonasal tract. RESULTS: Patient 1 developed ENB in the bilateral maxillary sinuses after unilateral endoscopic resection of a left ENB followed by postoperative proton radiotherapy. Patient 2 developed ENB at the left optic-carotid recess 7 years after a craniofacial resection and postoperative radiotherapy. Patient 3 developed ENB over the left zygomatic process of the maxilla 4 years after a cranioendoscopic resection and postoperative radiation therapy for ENB of the ethmoid sinuses with intracranial extension. The possibility of venous tumor emboli must be considered as a likely etiology. However, alternative explanations include the development of a second primary or potential transformation because of tumor signaling. CONCLUSION: We present 3 cases that may represent metastasis of ENB within the sinonasal tract.
BACKGROUND: Local recurrence, and regional and distant metastases, respectively, develop in 30% and 15% of patients with esthesioneuroblastoma (ENB). METHODS: This case report includes 3 patients with unusual recurrences of ENB in the sinonasal tract. RESULTS:Patient 1 developed ENB in the bilateral maxillary sinuses after unilateral endoscopic resection of a left ENB followed by postoperative proton radiotherapy. Patient 2 developed ENB at the left optic-carotid recess 7 years after a craniofacial resection and postoperative radiotherapy. Patient 3 developed ENB over the left zygomatic process of the maxilla 4 years after a cranioendoscopic resection and postoperative radiation therapy for ENB of the ethmoid sinuses with intracranial extension. The possibility of venous tumor emboli must be considered as a likely etiology. However, alternative explanations include the development of a second primary or potential transformation because of tumor signaling. CONCLUSION: We present 3 cases that may represent metastasis of ENB within the sinonasal tract.