Okada Susumu, Ohaki Yoshiharu, Ogura Junko, Ishihara Makiko, Kawamura Takashi, Kumazaki Tatsuo
Department of Radiology, Nippon Medical School Chiba-Hokuso Hospital, Tokyo, Japan.
J Comput Assist Tomogr. 2004 Mar-Apr;28(2):169-73. doi: 10.1097/00004728-200403000-00003.
The purpose of this work was to describe the computed tomography (CT) and magnetic resonance imaging (MRI) findings in cases of dermoid cysts coexisting with surface epithelial tumors in the same ovary.
The pathologic reports of 141 dermoid cysts, 97 mucinous and 35 serous tumors were reviewed. The CT and/or MR images in the cases with a dermoid cyst and a surface epithelial tumor coexisting in the same ovary were analyzed.
Eleven cases of mucinous tumors (6 benign, 3 low-grade, and 2 malignant) coexisted with dermoid cysts. Mucinous tumors were found in coexistence with 11.3% of dermoid cysts, and dermoid cysts were found in coexistence with 7.8% of mucinous tumors. In 10 cases, 3 radiologic patterns were observed: small fatty foci in the septa of the cystic tumor, an adjacent fat-containing component and a septated cystic component, and a dermoid cyst with no detectable mucinous tumor component. No histopathologically specific differences were observed between these groups. Small amounts of mucinous components were difficult to detect, but small fatty foci were easily detected. In 1 case, mucinous carcinoma formed a mass lesion in the wall of the dermoid cyst.
The coexistence of these two neoplasms was not rare. If a dermoid cyst accompanies a multiseptated cyst and if the multiseptal cyst contains fatty foci, these two components may be associated. Recognizing the potential for the coexistence of these two neoplasms in the same ovary is essential for making a correct diagnosis.
本研究旨在描述同一卵巢中皮样囊肿与表面上皮性肿瘤并存病例的计算机断层扫描（CT）和磁共振成像（MRI）表现。
回顾了141例皮样囊肿、97例黏液性肿瘤和35例浆液性肿瘤的病理报告。分析了同一卵巢中存在皮样囊肿和表面上皮性肿瘤病例的CT和/或MR图像。
11例黏液性肿瘤（6例良性、3例低级别和2例恶性）与皮样囊肿并存。黏液性肿瘤与11.3%的皮样囊肿并存，皮样囊肿与7.8%的黏液性肿瘤并存。在10例病例中，观察到3种影像学表现：囊性肿瘤间隔内的小脂肪灶、相邻的含脂肪成分和分隔的囊性成分，以及未检测到黏液性肿瘤成分的皮样囊肿。这些组之间未观察到组织病理学上的特异性差异。少量黏液性成分难以检测，但小脂肪灶易于检测。1例中，黏液性癌在皮样囊肿壁上形成肿块。
这两种肿瘤并存并不罕见。如果皮样囊肿伴有多分隔囊肿，且多分隔囊肿含有脂肪灶，则这两种成分可能相关。认识到这两种肿瘤在同一卵巢中并存的可能性对于做出正确诊断至关重要。
