Mucosal malignant melanoma is an uncommon tumor of the head and neck, and patient cannot easily recognize the lesion. Most patients are diagnosed with advanced lesions, and the 5-year survival rate is very low. Therefore, intraoral pigmented lesions require an incisional biopsy for differential diagnosis from malignant melanoma. As the size of the tumor increases, lesion showing vertical growth and lymph node metastasis increases, and the prognosis becomes poor. In this study, we report a case of mucosal malignant melanoma in the oral cavity that shows radial growth and no lymph node metastasis despite its relatively large size.

Abstract
Ⅰ. INTRODUCTION
Ⅱ. CASE REPORT
Ⅲ. DISCUSSION
REFERENCES

• 하규봉(부산대학교 치의학전문대학원 구강악안면외과학 교실) | Gyu-Bong Ha (Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University, 49 Busandaehak-ro, Mulgeum-eup, Yangsan 50612, Korea)
• 이정민(부산대학교 치의학전문대학원 구강악안면외과학 교실) | Jung-Min Lee (Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University, 49 Busandaehak-ro, Mulgeum-eup, Yangsan 50612, Korea)
• 황대석(부산대학교 치의학전문대학원 구강악안면외과학 교실, 치의생명과학연구소) | Dae-seok Hwang (Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University,Dental and life Science Institute, Pusan National University)
• 유미현(부산대학교 치의학전문대학원 구강병리학교실, 치의생명과학연구소) | Mi Heon Ryu (Department of Oral Pathology, School of Dentistry, Pusan National University, Dental and life Science Institute, Pusan National University) Corresponding author