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00133790

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RADIOLOGY: NERVOUS: Case# 32997: NF-1, MALIGNANT SCHWANOMAS. 43-year-old woman with history of neurofibromatosis. Recent surgical biopsy showed malignant degeneration of pelvis schwannomas. This study is compared to a previous study. There is a large soft tissue mass measuring 9 cm x 5 cm medial to the left iliac wing, with central low attenuation. This has gotten markedly larger since the previous study. There is an 8 cm x 4.5 cm soft tissue mass in the left mid gluteal region that has also gotten significantly larger in the interval since the previous study. There is severe destruction of the left iliac bone. There is a 9 cm x 6.5 cm soft tissue mass in the right gluteal region which has also gotten larger since the previous study. These gluteal masses also show low attenuation change centrally. There are lytic lesions present in the right iliac bone. There are also several small lytic lesions in multiple vertebral bodies. There is no significant abdominal adenopathy. There is a cystic lesion in the right pelvis measuring 3.8 x 3 cm. This is consistent with an adnexal mass, such as cystic ovarian lesion or hydrosalpinx. It is slightly more prominent than on the previous study.

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