“…17 The clinical presentation of sinonasal BSCC can include a nasal mass, nasal obstruction, epistaxis, cheek swelling, pain, exophthalmos, blurred vision, sinusitis and headache. 3,7,8,10,11,13,14,16 However, these features are not specific to BSCC, since any enlarging nasal mass can cause similar signs and symptoms. In most of these cases, sinonasal BSCC occurred on the right side 3,7,10,11,14,16 except for 3 reports in which it occurred on the left side, 8,14,17 the reason being unknown.…”