case_images: PMC5736932_01
case_images: MRI of the pelvic mass with (a) T1, (b) T1 + contrast, and (c) T2 images.
case_images: CRIOG2017-9724827.001.jpg
case_images: PMC5736932_01_CRIOG2017-9724827.001.jpg
case_images: fig1
case_images: Range: 0.0-35.0 U/mL). Repeat MRI from this most recent encounter showed an interval increase in the size, which now measured 4.3 x 3.8 x 4.1 cm (Figure 1).
case_images: Ultrasound of the left adnexal mass in transview.
case_images: CRIOG2017-9724827.002.jpg
case_images: PMC5736932_01_CRIOG2017-9724827.002.jpg
case_images: fig2
case_images: Repeat ultrasound prior to surgery revealed a 5.5 x 4.6 x 4.0 cm mixed cystic and solid left adnexal mass (Figure 2).
case_images: Histologic section showing a bland-appearing, spindled cell proliferation with regions of higher cellularity (Antoni A) interlaced with those of lesser cellularity (Antoni B) (H&E stain, 200x original magnification).
case_images: CRIOG2017-9724827.003.jpg
case_images: PMC5736932_01_CRIOG2017-9724827.003.jpg
case_images: fig3
case_images: There are regions of higher, more compact cellularity interlaced with areas that are more loosely cellular, corresponding to the Antoni A and Antoni B patterns (Figure 3).
case_images: Histologic section showing prominent, hyalinized blood vessels with admixed hemosiderin ("ancient changes") (H&E stain, 100x original magnification).
case_images: CRIOG2017-9724827.004.jpg
case_images: PMC5736932_01_CRIOG2017-9724827.004.jpg
case_images: fig4
case_images: There are thickened, hyalinized blood vessels and patchy foci of hemosiderin deposition (Figure 4).
case_images: Diffuse immunoreactivity for S-100 protein in neoplastic cells confirms Schwann cell origin of the tumor (200x original magnification).
case_images: CRIOG2017-9724827.005.jpg
case_images: PMC5736932_01_CRIOG2017-9724827.005.jpg
case_images: fig5
case_images: Neoplastic cells show diffuse reactivity (nuclear and cytoplasmic) for the S-100 protein (Figure 5).