J Korean Soc Magn Reson Med.  2013 Sep;17(3):243-248. 10.13104/jksmrm.2013.17.3.243.

MR Imaging of Primary Retroperitoneal Mucinous Cystadenocarcinoma in Pregnant Woman

• Lee J
• Cho BS
• Kim Y
• Yi KS
• Kang MH
• Lee SY
• Kim SJ
• Park KS

• KMID: 2206924
• DOI: http://doi.org/10.13104/jksmrm.2013.17.3.243

Abstract

Primary retroperitoneal mucinous cystadenocarcinoma is a very rare malignancy. To date, 51 cases have been reported, including 3 in pregnant women. Herein, we report magnetic resonance findings of a 31-year-old Korean woman (15 weeks and 3 days pregnant) with primary retroperitoneal mucinous cystadenocarcinoma. On abdominal magnetic resonance imaging (MRI), a mass was identified in the retroperitoneal area with a nodular lesion showing heterogeneous signal intensity and focal wall thickening on T1- and T2-weighted images. Exploratory laparotomy and tumor excision were performed. Histological examination revealed primary retroperitoneal mucinous cystadenocarcinoma. The patient subsequently underwent total hysterectomy, bilateral salpingo-oophorectomy, and omentectomy for metastatic mucinous cystadenocarcinoma of both ovaries 15 months after her initial surgery.

Keyword

Magnetic resonance imaging (MRI); Retroperitoneal Neoplasm; Mucinous Cystadenocarcinoma Pregnancy

MeSH Terms

Adult
Cystadenocarcinoma, Mucinous
Female
Humans
Hysterectomy
Laparotomy
Magnetic Resonance Imaging
Magnetic Resonance Spectroscopy
Mucins
Ovary
Pregnant Women
Retroperitoneal Neoplasms
Mucins

Figure

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  Fig. 1 A 31-year-old woman (15 weeks and 3 days pregnant) with primary retroperitoneal mucinous cystadenocarcinoma. Abdominal ultrasound imaging showing a cystic mass with high echoic nodules anteroinferior to the left kidney.

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  Fig. 2 A 31-year-old woman (15 weeks and 3 days pregnant) with primary retroperitoneal mucinous cystadenocarcinoma. Magnetic resonance image showing a retroperitoneal cystic mass including nodular lesion showing heterogeneous signal intensity and focal wall thickening on axial in-phase (a) and out-of-phase (b) gradient echo, axial T2-weighted (c), coronal T2-weighted (d), axial T2-weighted with fat suppression (e), and coronal T2-weighted with fat suppression (f) images. A surgical specimen (g) shows a portion of the cyst wall containing small solid nodules (arrows).

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  Fig. 3 A 31-year-old woman (15 weeks and 3 days pregnant) with primary retroperitoneal mucinous cystadenocarcinoma and metastatic mucinous cystadenocarcinoma of both ovaries 15 months after her initial surgery. Magnetic resonance image showing multiloculated cystic masses with heterogeneous signal intensity and enhancing solid portion in pelvic cavity on axial T1-weighted (a), gadolinium-enhanced axial T1-weighted (b), axial T2-weighted (c), and coronal T2-weighted (d) images.

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