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| The value of MRI in the diagnosis of metastatic ovarian tumors |
| LI Hai-ming1, QIANG Jin-wei1, ZHAO Shu-hui1, MA Feng-hua1, CAI Song-qi1, XIA Gan-lin2, FENG Feng2, FU Ai-yan2 |
| 1. Department of Radiology, Jinshan Hospital Affiliated to Fudan University, Shanghai 201508, China;2. Department of Radiology, Nantong Tumour Hospital of Jiangsu Province, Nantong Jiangsu 226361, China |
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Abstract Objective: To investigate magnetic resonance imaging(MRI) features in differentiating metastatic ovarian tumors and primary ovarian carcinomas. Materials and Methods: Twenty five patients with secondary metastatic ovarian carcinomas and 59 patients with primary ovarian carcinomas proven by surgery and pathology underwent MRI. MRI features of the two groups of tumors were evaluated and compared including laterality, size, margin, shape, cystic/solid, loculation, mural nodules or papillary projections, signal intensity, enhancement, peritoneal implants and metastasis of lymph node or distant organ. Results: On MRI, bilateral ovarian masses were seen in 16(64%) of 25 patients with 41 secondary ovarian tumors, whereas 25(42.4%) of 59 primary ovarian carcinomas with 84 ovarian tumors showed this feature. The difference of laterality was not statistically significant(P=0.070). A smooth margin, lobulated shape, intermediate and low signal intensity on T1WI fat suppression, intermediate signal intensity on T2WI in solid components and well demarcated intratumoral cystic lesions within solid portion of the tumor were significantly more common in secondary tumors(29/41, 21/41, 29/41, 10/38, 15/28, respectively) than in primary ovarian carcinomas(26/84, 27/84, 39/84, 6/84, 6/65, respectively)(P=0.000, 0.040, 0.010, 0.004, 0.000, respectively). Irregular shape, mural nodules or papillary projections, intratumoral hyperintense portion on T1WI fat suppression and hyperintense solid components on T2WI were significantly more common in the primary(35/84, 16/19, 30/84, 78/84, respectively) than in the secondary ovarian carcinomas(5/41, 6/13, 6/41, 28/38, respectively)(P=0.001, 0.049, 0.015, 0.004, respectively). Conclusion: MRI can demonstrate the different morphological features between secondary and primary ovarian carcinomas which is helpful for discriminating the two groups.
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Received: 20 February 2014
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Corresponding Authors:
QIANG Jin-wei
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2014, Vol. 25 
