case_images: PMC10870125_01
case_images: a Ultrasound of the scrotum/left testis showing discrepancy in size and echogenicity of both testes with significantly enlarged left testis. The testis had a heterogeneous tissue matrix with predominantly hypoechoic with a maximum size of 7.2 x 3.9 cm (b) and had markedly increased vascularity on color Doppler study (c).
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case_images: PMC10870125_01_cro-2024-0017-0001-536512_F01.jpg
case_images: F1
case_images: The testis had a heterogeneous tissue matrix, was predominantly hypoechoic, and had markedly increased vascularity (Fig. 1).
case_images: 18F FDG fused coronal FDG PET/CT images, which revealed heterogenous increased metabolic activity in enlarged left testis. PET, positron emission tomography; CT, computed tomography.
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case_images: PMC10870125_01_cro-2024-0017-0001-536512_F02.jpg
case_images: F2
case_images: The results revealed heterogenous increased metabolic activity in the left testis, which was enlarged (Fig. 2).
case_images: Left testicular biopsy. H&E (x20): sheets of PCs with plasmablastic morphology (a). CD138 immunostain (x20), highlighted sheets of PCs (b).
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case_images: F3
case_images: Histopathological examination of the testicular tissue (Fig. 3) showed infiltration of the testis with sheets of PCs (with plasmablastic morphology), which was positive for CD138 with aberrant expression of CD56 and showed lambda light-chain restriction.