CT and MRI characteristics of ovarian mucinous tumors associated with mature teratomas

IF 2 3区医学 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Clinical radiology Pub Date : 2026-02-01 Epub Date: 2025-12-15 DOI:10.1016/j.crad.2025.107218

M. Hattori , H. Kato , M. Kawaguchi , K. Kobayashi , T. Miyazaki , N. Watanabe , H. Nishibori , Y. Noda , F. Hyodo , M. Matsuo

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Abstract

Aim

This study aimed to evaluate the CT and MRI features of ovarian mucinous tumors associated with mature teratomas.

Materials and Methods

The present study enrolled a total of 34 patients with histopathologically proven ovarian mucinous tumors associated with mature teratomas, including collision tumors composed of mucinous tumors and mature teratomas and mucinous tumors arising from mature teratomas. All patients underwent preoperative pelvic CT and/or MRI. Imaging findings were retrospectively reviewed.

Results

Histopathological diagnosis of mucinous tumors included mucinous cystadenoma in 22 patients, mucinous borderline tumor (MBT) in 10 patients, and mucinous carcinoma in two patients. The mean maximum tumor diameter was 168 mm (range, 39–314 mm). All tumors were unilateral, well-defined, predominantly cystic, and multilocular. A total of 14 tumors (41 %) had fewer than 10 loculi, while 12 tumors (35 %) had 30 or more. Fatty components were observed in 30 tumors (88 %), and 20 of 30 tumors (67 %) had multiple fatty components. On MRI, stained glass appearance was observed in 20 of 29 tumors (69 %). On CT, nodular calcifications within fatty components were observed in 12 of 21 tumors (57 %), whereas flattened calcifications within the septa of non-fatty components were observed in 7 of 21 tumors (33 %). Pseudomyxoma peritonei (PMP) was observed in three patients (9 %) with MBT.

Conclusions

Ovarian mucinous tumors associated with mature teratomas typically presented as large, multilocular cystic lesions with fatty components and teratoma/mucinous tumor-associated calcifications. Although PMP was uncommon, it was rarely observed in patients with MBT.

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卵巢黏液性肿瘤合并成熟畸胎瘤的CT和MRI特征

目的探讨卵巢黏液性肿瘤合并成熟畸胎瘤的CT和MRI表现。材料与方法本研究共纳入34例经组织病理学证实的卵巢黏液性肿瘤伴成熟畸胎瘤患者，包括黏液性肿瘤与成熟畸胎瘤组成的碰撞瘤和由成熟畸胎瘤引起的黏液性肿瘤。所有患者术前均行盆腔CT和/或MRI检查。回顾性回顾影像学表现。结果组织学诊断为粘液性囊腺瘤22例，粘液性交界性肿瘤10例，粘液性癌2例。平均最大肿瘤直径为168 mm（范围39 ~ 314 mm）。所有肿瘤均为单侧，界限分明，主要为囊性，多房性。14例（41%）肿瘤少于10个腔室，12例（35%）肿瘤超过30个腔室。30例（88%）肿瘤中存在脂肪成分，其中20例（67%）肿瘤存在多种脂肪成分。在MRI上，29例肿瘤中有20例（69%）可见染色玻璃样外观。在CT上，21个肿瘤中有12个（57%）在脂肪成分内观察到结节状钙化，而21个肿瘤中有7个（33%）在非脂肪成分的间隔内观察到扁平钙化。3例（9%）MBT患者出现腹膜假性粘液瘤（PMP）。结论卵巢黏液性肿瘤合并成熟畸胎瘤典型表现为大的、多室的囊性病变，伴脂肪成分和畸胎瘤/黏液性肿瘤相关的钙化。虽然PMP不常见，但在MBT患者中很少观察到。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Clinical radiology 医学-核医学

CiteScore

4.70

自引率

3.80%

发文量

528

审稿时长

76 days

期刊介绍： Clinical Radiology is published by Elsevier on behalf of The Royal College of Radiologists. Clinical Radiology is an International Journal bringing you original research, editorials and review articles on all aspects of diagnostic imaging, including: • Computed tomography • Magnetic resonance imaging • Ultrasonography • Digital radiology • Interventional radiology • Radiography • Nuclear medicine Papers on radiological protection, quality assurance, audit in radiology and matters relating to radiological training and education are also included. In addition, each issue contains correspondence, book reviews and notices of forthcoming events.