Treatment of fat-poor renal angiomyolipoma with ectopic blood supply by fluorescent laparoscopy: A case report and review of literature

Figure 1 Abdominal contrast-enhanced computed tomography scans revealed that a heterogeneous mass was seen in the lower pole of the right kidney, with the size of about 53 mm × 47 mm. A: Arterial phase; B: Venous phase; C: Coronal section; D: Median sagittal section.

Figure 2 A mass showing ectopic renal artery blood supply on contrast-enhanced computed tomography. A and B: The ectopic artery flows from the abdominal aorta below the renal artery, supplying blood to the middle and lower pole part of the right kidney and the tumor.

Figure 3 The fluorescence mode clearly indicates that the ectopic artery provided blood to the middle and lower half of the right kidney. A: Artery showing an ectopic right kidney in the white-light mode; B: Artery showing an ectopic right kidney in the fluorescent mode.

Figure 4 In the fluorescence mode, the renal tumor had almost the same color as the surrounding normal tissue, and the border is hard to recognize. A: In the white-light mode; B: In the green-light mode; C: In the color light mode; D: In the black and white light mode.

Figure 5 Tumor images. A and B: Picture of the right kidney tumor specimen, the tumor was successfully removed and the margin was intact.

Figure 6 Histopathological image. A: Histopathological image showing tumor cells composed of spindle or fatty spindle cells with moderate cell density and a strip-like arrangement (H&E staining); B: Histopathological image showing significant thick-walled vessels with vitreous changes, and tumor cells seemed to distribute around the vessels; C: Immunohistochemical images showing positivity for HMB45; D: Immunohistochemical images showing S-100 positivity were suggestive of mature adipocytes.