PMC9877597_01
(A) Two-dimensional ultrasound showed a hyperechoic mass resembling a scrotum (the white arrow shows) in the perineum of the fetus. (B) Three-dimensional ultrasound showed the scrotum-like masses (the white arrow shows) and their relationship with other organs vividly at 33 weeks gestation.
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F1
Two-dimensional ultrasound showed a hyperechoic mass (1.7 x 1.2 cm) resembling a scrotum in the perineum of the fetus (Figure 1A). Three-dimensional ultrasound showed scrotum-like masses and their relationship with other organs (Figure 1B).
PMC9877597_02
(A) Gross appearance of the perineal masses at birth. (B) The histological examination results of the perineal masses show hyperplastic lymph vessels and adipose tissue that conformed to hamartomas. (C) After the mass was removed, a cavity can be seen clinging to the posterior wall of the rectum. (D) Under contrast agent, the radiography shows an irregular cystic mass located in the presacral space.
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F2
The masses were 2.5 x 1.5 cm and 1.4 x 0.7 cm in size (Figure 2A). Histopathological examination of the masses suggested hamartomas composed of hyperplastic lymph vessels and adipose tissues (Figure 2B). After the masses were removed, a cavity was discovered along the posterior rectal wall (Figure 2C). The contrast agent showed an irregular cystic mass connected to the posterior wall of the rectum, and rectal duplication was suspected (Figure 2D).