Ultrasonography of sclerosing angiomatoid nodular transformation in the spleen

Figure 1 Conventional sonographic findings of sclerosing angiomatoid nodular transformation in a 36-year-old man. A: B mode ultrasonography demonstrates a hypoechoic lesion (arrow) in the spleen; B: Color Doppler flow imaging shows a low color-flow signal in the lesion.

Figure 2 Conventional ultrasonography and contrast-enhanced ultrasonography findings of sclerosing angiomatoid nodular transformation in a 37-year-old woman with pain in the left upper quadrant. A-C: A heterogeneous hypoechoic lesion (arrow) in the spleen, with blood-flow signals in the peripheral area; D: There was a 0.9 cm homologous nodule attaching to the side of the lesion that became evident after being enhanced (2 min 48 s after injection); E: The lesion was enhanced homogeneously.

Figure 3 Conventional ultrasonography and contrast-enhanced ultrasonography findings of sclerosing angiomatoid nodular transformation in a 39-year-old man. A: A hypoechoic lesion (arrow) in the spleen; B and C: Color Doppler flow imaging shows branch-shaped and wire-like blood-flow signals inside and spot-shaped blood-flow signals in the periphery of the lesion; D: The lesion was enhanced in the branch-shaped diffuse pattern (15 s after injection); E: It presented heterogeneous lobular appearance when reaching its peak enhancement; F: Lots of septa inside the lesion; G: Surface of the lesion found during the operation.