PMC8247787_01
Ultrasound sonography: (a) a well-capsulated heteroechoic round mass over the tail of epididymis, 4.7 x 3.5 cm in size, and (b) abundant tortuous vessels adjacent to the paratesticular tumor. (c) The tumor had a rich blood supply on color Doppler sonography.
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Scrotal sonography showed a heterogenous round mass over the tail of epididymis (Figure 1a and b). Rich blood supply was noted under Color Doppler sonography (Figure 1c).
A white, grayish, well-circumscribed, solid tumor (4 x 3.5 cm) adherent to atrophic testis and epididymis (arrow: tumor; star: testis).
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Gross examination showed a gray, round, and solid tumor with clear boundaries (Figure 2).
Typical bland spindle or stellate cells with little or no nuclear polymorphism and variably elongated cytoplasm set in a mucomyxoid stroma. Vascularity was variably composed of delicate to more hyalinized vessels (a) (hematoxylin and eosin, magnification 200x); typical cytoplasmic desmin (b) and smooth muscle actin (c) immunopositivity (magnification 200x).
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The lesion was immunoreactive for CD34, smooth muscle actin, and desmin and negative for S100, estrogen receptors (ERs), and progesterone receptors (PRs) (Figure 3).