title: A Case of Amelanotic Malignant Melanoma of the Maxillary Sinus Presented with Intraoral Extension.
abstract: Melanoma of the sinonasal cavity has a high incidence of amelanotic presentation. Its diagnosis is difficult for clinicians and pathologists because of its hidden location and lack of pigmentation at the microscopic level. We reported a case of amelanotic melanoma of the maxillary sinus that showed aggressive extension to the oral cavity after extraction of the maxillary tooth. Histologically, the lesion resembled a plasmacytoid tumour. Diagnosis was made through the positive immunohistochemical staining for S100 and HMB-45.
authors.affiliation: Department of Oral and Maxillofacial Pathology, Vyas Dental College and Hospital, Kudi Haud, Pali Road, Jodhpur PIN 342008, Rajasthan, India.
authors.forename: Abhishek
authors.initials: A
authors.lastname: Singhvi
authors.affiliation: Post graduate student, Department of Oral and Maxillofacial Pathology, Vyas Dental College and Hospital, Kudi Haud, Pali Road, Jodhpur PIN 342008, Rajasthan, India.
authors.forename: Ashish
authors.initials: A
authors.lastname: Joshi
keywords: amelanotic melanoma; immunohistochemistry; maxillary sinus; oral cavity