Occurrence of Primary intraosseous mucoepidermoid carcinoma (PIOC) within the jaw bones from aberrant salivary tissues is extremely rare. Mandible is more commonly affected but occurrence in maxilla is very rare. The origin of mucoepidermoid carcinoma is controversial and debatable. Primary Intraosseous mucoepidermoid carcinoma is frequently misdiagnosed radiographically and clinically as a benign odontogenic tumor or cyst.Primary Intraosseous Mucoepidermoid Carcinoma has distinct and specic radiological and morphological features for its diagnosis. The main modality of treatment is surgery and appropriate patients are offered adjuvant radiotherapy. This paper reports a case of central mucoepidermoid carcinoma of the Maxilla which was presented as complaints of pain and swelling of upper jaw.Then, he was treated with surgery followed by adjuvant treatment as per specimen pathological report. Here, we have used Simultaneous Integrated Boost technique with helical IMRT for Radiotherapy along with concurrent chemotherapy for treatment of revised margins following positive margins status. Central mucoepider Summary: moid carcinoma is a rare entity with highly selective radiological, histological and immunohistochemical criteria with overall around 150 cases reported. Due to rarity of occurrence, consensus guidelines for treatment protocol have not been established. Here we have described a similar case of a 25yrs old male patient that was diagnosed, surgically resected and has completed adjuvant chemo-radiation therapy at our centre
