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  • Title: Possible esthesioneuroblastoma metastasis to paranasal sinuses: Clinical report and literature review.
    Author: Buohliqa L, Upadhyay S, Nicolai P, Cavalieri R, Dolci RL, Prevedello D, Carrau RL.
    Journal: Head Neck; 2016 Feb; 38(2):E32-6. PubMed ID: 25946111.
    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.
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