PMC6031586_01
Transverse magnetic resonance image of the solid mass anterior to the right ectopic pelvic kidney with a cystic component at the centre.
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Abdominopelvic magnetic resonance imaging (MRI) revealed a 14 x 9 cm solid mass with a cystic component in its centre (Fig. 1, Fig. 2).
(a) Non-seminomatous (yolk sac) component of the intra-abdominal right testicular mixed germ cell tumor (H&E staining, x100 magnification) (b) Atypical seminoma cells between the septae invaded by lymphocytes in the left intra-abdominal testis (H&E staining, x40 magnification) (c) Colon segment invaded through the serosal layer by the yolk sac component of the right testicular mixed germ cell tumor (H&E staining, x20 magnification).
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PMC6031586_01_gr3.jpg
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Histopathological examination of the retroperitoneal mass was reported as mixed (90% non-seminomatous and 10% seminomatous) germ cell tumor with negative surgical margins (Fig. 3). Pathological assessment of the left testis also revealed a mixed tumor (atypical seminoma and mature teratoma) which constituted 5% of the testicular volume (Fig. 3). Evaluation of colonic tissue confirmed colon invasion by the yolk sac tumor component of the retroperitoneal mass (Fig. 3).