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| Karra Jones, MD, PhD |
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| Axial MRI T1 Post-Contrast |
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| CD34 |
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| CD34 |
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| STAT6 |
Friday, May 19, 2017
Guest Post: A Case From the Hawkeye State
From the illustrious Dr. Karra Jones of the University of Iowa:
40 year old female with progressive headaches over 6-8
months. MRI showed a large cystic and solid mass, favored to be extra-axial and
arising from the anterior skull base just left of midline with possible dural
attachment. Sections showed a densely cellular mass arranged in a mostly
haphazard, slightly fascicular pattern. Alternating hypercellular and
hypocellular areas were seen. Tumor cells were ovoid to spindle shaped with
scant eosinophilic cytoplasm. No eosinophilic bands of wire-like collagen were
noted, and only focal staghorn-like vasculature was identified. Only up to 3
mitotic figures were enumerated in 10 hpf counts. No necrosis was identified. You can see the diagnosis in the comment section after considering the photographs below:
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1 comment:
Solitary Fibrous Tumor/Hemangiopericytoma, WHO grade II
This is a tumor with a hemangiopericytoma morphologic pattern, but with fewer than 5 mitotic figures/10 hpf and without necrosis.
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