Primary Malignant Melanoma of Oral Mucosa - Report of Two Cases

Malignant Melanoma of the Oral Cavity: An Aggressive and Rare Entity

It is exceptionally unusual to see oral malignant melanoma, which is highly aggressive with dismal prognosis. A 61-year-old female patient presented with hyperpigmented and hemorrhagic areas in the anterior mandible. Microscopically, positive Immunohistochemistry staining with monoclonal antibody Human Melanoma Black (HMB45) and S100 protein, confirmed the diagnosis as malignant melanoma.

A nuanced exploration delving into malignant melanomas occurring in unexpected and less common anatomical locations

Malignant melanoma originates from melanoma cells, which derive from the neuroectoderm of the ectodermal mucosa. The chameleonic presentation of malignant melanoma, its often asymptomatic nature, the rarity of the lesion, the grim prognosis, and the imperative for highly specialized treatment are critical factors that merit careful consideration. Herein, we report a compilation of five cases of malignant melanomas occurring at unusual anatomical locations, which were initially misdiagnosed, which on careful analysis with the use of immuno-histochemical stains were correctly diagnosed as malignant melanoma.

Treatment Modalities of Recurrent Oral Mucosal Melanoma In Situ

Oral mucosal melanoma (OMM) represents an extremely rare entity that is associated with a poor prognosis due to late diagnosis and early metastasis. Here, extensive surgical therapy is the therapy of choice. In contrary, for OMM in situ, the respective therapeutical recommendations are lacking. In this case report, treatment modalities of an OMM in situ of the palate, including the maxillary alveolar process, are reported. The tumor relapsed twice despite adequate surgical therapy and reconstruction. Therefore, irradiation was performed as an adjuvant therapy. At a follow-up of two years, the patient was free from recurrences.