MRI characteristics of ovarian metastasis: differentiation from stomach and colorectal cancer.

IF 2.1 4区医学

Japanese Journal of Radiology Pub Date : 2025-04-01 Epub Date: 2024-11-14 DOI:10.1007/s11604-024-01700-6

Yukiko Takai, Hiroki Kato, Masaya Kawaguchi, Kazuhiro Kobayashi, Kyoko Kikuno, Tatsuro Furui, Masanori Isobe, Yoshifumi Noda, Fuminori Hyodo, Masayuki Matsuo

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引用次数: 0

Abstract

Purpose: To evaluate the efficacy of MRI findings for differentiating between ovarian metastasis from stomach cancer (OMSC) and colorectal cancer (OMCC).

Methods: Twenty-six patients with histopathologically proven ovarian metastasis (n = 8 with 12 OMSCs and n = 18 with 25 OMCCs) were enrolled in the study. All patients had undergone pelvic MRI before surgery. We retrospectively reviewed MRI findings and compared them between the two pathologies. The black scrunchie sign was defined as a thick (> 5 mm) and lobulated hypointense rim (> 180°) with central hyperintense areas on T2-weighted images.

Results: Predominantly solid lesions (100% vs. 20%, p < 0.01), black scrunchie sign (33% vs. 0%, p < 0.01), and flow void (67% vs. 20%, p < 0.01) were frequently observed in OMSCs than in OMCCs. The signal intensity ratio of solid components on T2-weighted images (3.30 ± 0.70 vs. 2.52 ± 0.77, p < 0.01) and gadolinium-enhanced T1-weighted images (2.21 ± 0.57 vs. 1.43 ± 0.32, p < 0.01) were significantly higher in OMSCs than in OMCCs. Furthermore, hyperintense areas within cystic components on T1-weighted images (71% vs. 18%, p < 0.01) and stained-glass appearance (44% vs. 0%, p < 0.01) were frequently observed in OMCCs than in OMSCs.

Conclusion: The black scrunchie sign was only observed in OMSCs. OMSCs always exhibited predominantly solid lesions and had higher signal intensity of solid components on T2- and gadolinium-enhanced T1-weighted images. OMCCs usually presented as cystic lesions, usually accompanied by hyperintense areas within the cystic components on T1-weighted images.

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卵巢转移的磁共振成像特征：与胃癌和结肠直肠癌的区别。

目的：评估磁共振成像结果在区分胃癌卵巢转移灶（OMSC）和结直肠癌卵巢转移灶（OMCC）方面的功效：本研究共纳入26例经组织病理学证实的卵巢转移患者（12例OMSC患者，n=8；25例OMCC患者，n=18）。所有患者在手术前都接受了盆腔磁共振成像检查。我们回顾性地查看了磁共振成像结果，并对两种病变进行了比较。黑色搓衣板征被定义为在T2加权图像上出现厚的（> 5 mm）分叶状低密度边缘（> 180°），并伴有中心高密度区：以实性病变为主（100% 对 20%，P只有在 OMSCs 中才能观察到黑色搓衣板征。OMSC总是以实性病变为主，在T2和钆增强T1加权图像上实性成分的信号强度较高。OMCC通常表现为囊性病变，在T1加权图像上通常伴有囊性成分内的高强区。

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

Japanese Journal of Radiology Medicine-Radiology, Nuclear Medicine and Imaging

自引率

4.80%

发文量

133

期刊介绍： Japanese Journal of Radiology is a peer-reviewed journal, officially published by the Japan Radiological Society. The main purpose of the journal is to provide a forum for the publication of papers documenting recent advances and new developments in the field of radiology in medicine and biology. The scope of Japanese Journal of Radiology encompasses but is not restricted to diagnostic radiology, interventional radiology, radiation oncology, nuclear medicine, radiation physics, and radiation biology. Additionally, the journal covers technical and industrial innovations. The journal welcomes original articles, technical notes, review articles, pictorial essays and letters to the editor. The journal also provides announcements from the boards and the committees of the society. Membership in the Japan Radiological Society is not a prerequisite for submission. Contributions are welcomed from all parts of the world.