Both synovial cysts and synovial chondromatoses originate from synovial tissue, and only one case has been reported to occur simultaneously in a patient. Our patient presented with a swelling of the right preauricular area and pain on opening the mouth. Magnetic resonance images demonstrated two cystic structures in the superficial lobe of right parotid gland. Under the clinical impression of a cyst in the salivary gland, an enucleation was performed. However, the final diagnosis based on microscopic examination was a synovial cyst associated with the right temporomandibular joint and a synovial chondromatosis arising within the cystic wall. Awareness of this combined lesion will help make a diagnosis and establish a proper treatment plan.

Ⅰ. 서론
 Ⅱ. 증례보고
  1. 임상 및 방사선 소견
  2. 병리학적 소견
 Ⅲ. 고찰
 Ⅳ. 참고문헌

• 조영아(서울대학교 치의학대학원 구강병리학교실) | Young Ah Cho
• 신의정(서울대학교 치의학대학원 구강병리학교실) | Wui Jung Shin
• 윤혜정(서울대학교 치의학대학원 구강병리학교실) | Hye Jung Yoon
• 홍성두(서울대학교 치의학대학원 구강병리학교실) | Seong Doo Hong
• 홍삼표(서울대학교 치의학대학원 구강병리학교실) | Sam Pyo Hong
• 이재일(서울대학교 치의학대학원 구강병리학교실) | Jae Il Lee correspondence