PMC3037990_01
MRI scan showing the presacral and precoccygeal tailgut cyst lesions with intermediate signal intensity. a Sagittal view of the presacral cyst. b Axial view of the presacral cyst. c, d Axial view of the precoccygeal cyst.
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F1
Pelvic MRI with contrast demonstrated a 4 x 3.8 x 3 cm retroperitoneal cystic tumor with intermediate high signal intensity on T1- and T2-weighted images in the right presacral area, and a 2.5 x 1.5 cm cystic mass in the precoccygeal space with high signal intensity on T1-weighted image (fig. 1).
The macroscopic findings displayed an oval-shaped, gray-white appearance and the cysts was filled with a thick yellowish material.
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F2
The surgical specimens consisted of two fragments of fibrofatty tissues, the larger presacral mass a unilocular cyst with a stalk of connective tissue, and measured 4 x 3.5 x 3 cm (fig. 2).
Microscopic pathological findings. a, b The presacral cyst was lined by squamous epithelium and focal columnar epithelium. c, d The precoccygeal cyst wall was lined by stratified squamous epithelium.
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F3
Microscopically, the walls of the cyst were partially lined with stratified squamous epithelium and columnar epithelium (fig. 3).