Hyper-accuracy three-dimensional reconstruction as a tool for better planning of retroperitoneal liposarcoma resection: A case report

Figure 1 Imaging findings before treatment. A and C: Computed tomography angiography showed a massive lipoma-like mass extending from the sub-hepatic space to the pelvic cavity, with multiple organs dislocated; B and D: Intravenous pyelography with radiocontrast agent confirmed the displacement of the right kidney to the left lower quadrant and its excretion function was good.

Figure 2 Hyper-accuracy three-dimensional reconstruction. A: Three-dimensional surface-rendered organs and tumor; B: Semitransparentizing liver revealed the relationship between the tumor and liver; C and D: Semitransparentizing or hiding tumor revealed the detail variations regarding anatomical structures. More details: http://www.cas.hisense.com:10052/?id=VnVmamZNSzhCbl8zODQ1&type=newCode.

Figure 3 Pathological examination results. A: Pathological examination revealed well-differentiated liposarcoma. Macroscopically, the mass appeared oval but was separated into irregular lobulations; B-E: The epithelial component showed a low grade of dedifferentiation. Immunohistochemically, the tumor was partly positive for MDM2, S100, CK34, and CKD4, with a low grade of dedifferentiation (Ki-67: 20%).

Figure 4 Contrast enhanced computed tomography images. A: Contrast enhanced computed tomography (CT) 3 mo after surgery; B: Contrast enhanced CT 16 mo after surgery.