PMC1783662_01
Imaging of scrotal ancient schwannoma. a) Ultrasound image and b) CT image showing an intra-scrotal and extra-testicular mass in the mid-scrotal region [Capital red T - tumour, red t - testes].
1471-2490-7-1-1.jpg
PMC1783662_01_1471-2490-7-1-1.jpg
F1
Initial ultrasonography (Fig 1a) showed a large extra-testicular and multinodular mass in the midline of the scrotum. Tomography (CT) of the scrotum, abdomen and chest was performed, which identified a similarly localised heterogeneous mass of 6.9 x 3.7 cm, separate from the testes (Fig 1b) and did not extend into the tunica vaginalis. There was no evidence of distant or nodal metastases.
Macroscopic appearance this scrotal ancient schwannoma. A white multinodular tumour with haemorrhagic areas.
1471-2490-7-1-2.jpg
PMC1783662_01_1471-2490-7-1-2.jpg
F2
The resected specimen (Fig 2) was white and multinodular, with areas of cystic change and haemorrhage.
Microscopic appearance of ancient schwannoma. a) spindle cells in an Antoni type A area; a red arrow indicates a large bizarre hyperchromatic nucleus b) Antoni B areas consisting of spindle cells within a loose myxoid matrix, c) occasional pleomorphic nuclei within Antoni A areas, and d) positive S100 immunohistochemical staining.
1471-2490-7-1-3.jpg
PMC1783662_01_1471-2490-7-1-3.jpg
F3
Microscopically (Fig 3), proliferation of spindled shaped cells with fibrillary cytoplasm was seen, with dense fibrous bands arranging the cells into nodules.