Sinonasal mucosal melanoma is a rare and highly aggressive tumour. This tumour often carries a poor prognosis because of local invasion and early distant metastasis. It's, in fact, an aggressive, fortunately rare, disease. It's more common among population in their seventies, with a prolonged course due to innocuous symptoms. We report a case of sinonasal mucosal melanoma in a 56-years old male who presented with a brownish sinonasal mass involving right nasal fossa, swelling and spontaneous epistaxis. We report this case for the one-time reconstruction treatment performed by our team. Highlights ? Sinonasal mucosal melanoma is defined as a rare and highly aggressive tumour, often carrying a poor prognosis because of local invasion and early distant metastasis. ? Sinonasal mucosal melanoma needs to be considered in the differential diagnosis of sinonasal malignancies. ? In our case report, a one-time reconstruction treatment and endoscopic approach are described. ? One-time reconstruction shortened patient's hospitalization, improved patient's quality of life, if not survival, and allowed him to benefit immunotherapic treatment as soon as possible after tumour's surgical resection.
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