Vascular malformations comprise a spectrum of structural anomalies of blood vessels that may present with variable symptoms and clinical behavior. Among these, venous malformations are the most common low-flow lesions and can involve both cutaneous and mucosal tissues. However, intraoral venous malformations, particularly those arising in the buccal mucosa, are uncommon and may be misdiagnosed as other benign oral lesions. In such cases, subtle clinical findings and nonspecific symptoms can delay diagnosis and appropriate management. Imaging modalities, including Doppler ultrasonography and magnetic resonance imaging, are useful for confirming the low-flow nature of the lesion, delineating its extent, and distinguishing it from other vascular anomalies or soft tissue masses. Therapeutic options range from observation to sclerotherapy, laser treatment, or surgical excision, and must be adapted according to lesion size, location, and symptom burden. This report describes a low-flow venous malformation of the buccal mucosa and outlines the clinical, radiologic, and therapeutic considerations relevant to this rare presentation in the head and neck region. By presenting this case and reviewing the pertinent literature, we aim to raise awareness of buccal venous malformations and provide practical guidance for their evaluation and management.

• 김도연(부산대학교 치의학전문대학원 구강병리학교실) | DoYeon Kim (Department of Oral Pathology, School of Dentistry, Pusan National University)
• 이지혜(부산대학교 치의학전문대학원 구강병리학교실) | JiHye Lee (Department of Oral Pathology, School of Dentistry, Pusan National University)
• 박혜련(부산대학교 치의학전문대학원 구강병리학교실) | Hae Ryoun Park (Department of Oral Pathology, School of Dentistry, Pusan National University)
• 송재민(부산대학교 치의학전문대학원 구강악안면외과학교실) | Jae-Min Song (Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University) Corresponding author