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MR findings of pseudoneoplastic lesions in the uterine cervix mimicking adenoma malignum

¹ Department of Radiology, Seirei Numazu Hospital, 902-6 Shichitanda Matsushita Hon-aza, Numazu, Shizuoka, 410-8555 and ² Department of Radiology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, Shizuoka, 431-3192, Japan

Correspondence: K Sugiyama, Department of Radiology, Seirei Numazu Hospital, 902-6 Shichitanda Matsushita Hon-aza, Numazu, Shizuoka, 410-8555 Japan. E-mail: koichiss37{at}yahoo.co.jp

Pseudoneoplastic glandular lesions are benign lesions that are often histologically and radiographically confused with adenoma malignum, which is a rare variant of mucinous adenocarcinoma of the uterine cervix. 15 cases of pseudoneoplastic glandular lesions, characterized by multilocular cystic masses in the uterine cervix, were investigated; these lesions included endocervical glandular hyperplasia, deep nabothian cysts and tunnel cluster. All lesions were proven by conization or hysterectomy. The MR findings correlated closely to the histopathological specimens. As a result, MR findings of pseudoneoplastic glandular lesions were almost identical to those of adenoma malignum; hence, it was almost impossible to differentiate between the two pathologies. Radiologists should be aware that these two conditions are quite similar in morphology.