B-cell non-Hodgkin lymphoma of the ethmoid sinus.

1 Specialist on ENT (Coordinator of the Medical Residency Program on ENT at the São José do Avaí Hospital). 2 Specialist on ENT at the São José do Avaí Hospital (Specialist on ENT at the São José do Avaí Hospital). 3 Second-year Resident Physician in the ENT service at the São José do Avaí Hospital (Second-year Resident Physician in the ENT service at the São José do Avaí Hospital). 4 First-year Resident Physician in the ENT service at the São José do Avaí Hospital (First-year Resident Physician in the ENT service at the São José do Avaí Hospital). 5 Second-year Medical Student (Second-year Medical Student). São José do Avaí Hospital HSJA. Send correspondence to: Flavia Rodrigues Ferreira. Rua Galdino Lessa, no 101, apto. 504. Centro. Itaperuna RJ. Brazil. CEP: 28300-000. Paper submitted to the BJORL-SGP (Publishing Management System Brazilian Journal of Otorhinolaryngology) on October 12, 2011; and accepted on October 16, 2012. cod. 8838. CASE REPORT Braz J Otorhinolaryngol. 2013;79(2):259. BJORL