No abstract

Primary non-Hodgkin's lymphoma (NHL) of the nasal cavity is an extra nodal form of NHL characterized by association with Epstein-Barr virus (EBV) infection , predominance of T-cell phenotype and a worse prognosis compared to nodal lymphoma. In the west, paranasal sinus NHL is more common. In contrast, in the east, nasal NHL is more common than the NHL of the paranasal sinus [7]. Xiong et al. reported the largest series of primary non-Hodgkin's lymphoma (NHL) of the nasal cavity [8]. Median age of presentation was 44 years (Range: 11-79 years) and males were affected more often than females. Maxillary sinus was the most frequent site of involvement followed by the ethmoid sinus and the nasopharynx. The most common presenting symptoms include nasal obstruction, epistaxis and headache. Diplopia and blurred vision are rare infrequent symptoms associated with nasal NHL. The present patient is a middle aged male who presented with nasal obstruction and extension of the tumour into the maxillary sinus. Macroscopically, these tumours are sub mucosal in contrast to squamous cell carcinomas which are ulcerative [9]. Angio invasion and necrosis are the two characteristic histological features of sino-nasal NHL [10]. NHL of the nasal cavity are predominantly T-cell lymphomas, whereas NHL of the paranasal sinuses are B-cell lymphomas. Staging of the patients is according to Ann Arbor system [11]. In addition to CECT of the para nasal sinuses, CECT of the abdomen and thorax are required for adequate staging. Management is according to the stage of the disease. Stage IE is treated with chemotherapy or radiotherapy alone whereas stage IIE/IIIE and IVE require varying