solitärer fibröser Tumor des Retroperitoneums

Computertomographie

ohne und mit Kontrastmittel eines großen retroperitonealen solitären fibrösen Tumors.

Magnetresonanztomographie

T1- und T2-gewichtet eines großen retroperitonealen solitären fibrösen Tumors.

Retroperitoneal

solitary fibrous tumor of the pelvis with pollakiuria: a case report. CT showed a 10 × 8 × 7-cm, heterogeneously CE pelvic tumor that was slightly lobulated and included hypervascular regions . (a) Transverse view. (b) Coronal view. T: tumor, B: bladder.

Integrally

calcified solitary fibrous tumor in the retroperitoneum: a case report and review of the literature. Preoperative images. a, b Images of plain computed tomography on the patient’s first visit. A mass with extremely high densities was located next to the undersurface of the right hepatic lobe and the right kidney (yellow arrows). It was 6.5 cm in the longest diameter. c An image of plain computed tomography 2 years after the patient’s first visit (yellow arrow). There were no remarkable changes of the mass in its appearance or size. d, e Magnetic resonance imaging on the patient’s first visit. The mass showed low signal intensities on both d T1- and e T2-weighted images (red arrows)

CT features

of retroperitoneal solitary fibrous tumor: report of three cases and review of the literature. Retroperitoneal solitary fibrous tumor in a 22-year-old woman. (A) Solid part of the tumor in arterial phase is in moderate, uneven enhancement with extensive vessel, and unenhanced low-density cystic areas are visible inside. (B) The solid part of the tumor in the venous phase is insignificant, with uneven or no enhancement in low-density cystic areas, but envelope enhancement is visible. (C) Tumor cells with admixed thin and thick, collagen fibers. There is a relative demarcation between the hypercellular and hypocellular areas under the microscope.

CT features

of retroperitoneal solitary fibrous tumor: report of three cases and review of the literature. Right retroperitoneal solitary fibrous tumor in a 61-year-old woman. (A) Transverse arterial phase shows a huge soft tissue mass fused by multiple nodules of varying sizes, and the solid part is in moderate, uneven enhancement. (B and C) Multi-planar reconstruction in venous phase shows that the solid part of the tumor is in more significant, sustained, uneven enhancement, no enhancement in low-density cystic areas, but envelope enhancement is visible. (D) The solid part has sustained enhancement in the delayed phase. (E) Tumor cells were fusiform with a bundle-like, spiral arrangement under the microscope, rich sinusoids and interstitial collagen denaturation were observed in the focus areas.

CT features

of retroperitoneal solitary fibrous tumor: report of three cases and review of the literature. Retroperitoneal solitary fibrous tumor in a 62-year-old man. (A) CT scan shows huge retroperitoneal soft tissue mass on the right side of the bladder in uneven density. (B) The solid part in arterial phase is in moderate, uneven enhancement, with tumor vessel, and cystic areas of low density are visible inside. (C) The solid part in venous phase is in more significant, sustained, uneven enhancement, no enhancement in low-density cystic areas, but envelope enhancement is visible. (D) The tumor was composed of rich, dense, fusiform cells under the microscope, with branching vascular channels, collagenous bundles, and coagulation necrosis in focus areas.