PMC6370129_01
Coronal view of contrast enhanced computed tomography images. A hypo-attenuated mass extended from the IVC to the PA. Arrow head: tumor; IVC = inferior vena cava, PA = pulmonary artery, RA = right atrium.
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F1
As the mass did not respond to thrombotic therapy, computed tomography (CT) was performed, and the results are shown in Figure 1A.
(A) Tumor had an umbilical cord-like appearance with a length of 41 cm. The tumor surface was smooth and without any attachment to other structures. (B) Cut-end of the tumor. The cut-end revealed an encapsulated fibroelastic cord with some scattered blood vessels.
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F2
The tumor was removed forcefully at the distal end (Fig. 2).
(A) Under 100x microscopic view, the tumor is a benign leiomyomatous tumor with high vascularity; it is edematous and has a hyalinized stroma. The tumor was completely same as the tumor of intravascular growth in the uterine corpus. (B) Under 400x microscopic view, no pleomorphism or increased mitosis suggesting leiomyosarcoma was seen. The microscopic examination concluded intravenous leiomyomatosis without malignant transformation.
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F3
Uterine leiomyomatosis without malignant transformation was noted in the pathologic examination, as shown in Figure 3.