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Old 02-06-2012
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Default mass involving the right ischium of the pelvis

Q. 51 yr. old man has noted right hip pain for the past 3 months. On physical examination he has diminished range of motion of the right hip. A radiograph reveals a 10 x 13 cm mass involving the right ischium of the pelvis. The mass has irregular borders and there are extensive areas of bony destruction along with some scattered calcifications. The lesion is resected, and grossly the mass has a bluish-white cut surface. Which of the following attributes is most likely to describe this mass?
A The most frequent primary tumor of bone
B Usually seen in distal skeletal bones
C More common in females
D Sometimes seen to arise in benign cartilagenous tumors
E Associated with Paget disease of bone
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Old 02-06-2012
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Ans ..........D.............thinking of chondrosarcoma ....
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Old 02-06-2012
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Sounds like Ewing Sarcoma... A

CORRECTION: Make that B
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Old 02-06-2012
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bluish-white cut surface think seems like ewing sarcoma///i m with b ..not sure..
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Old 02-07-2012
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Ans..D...Ewings sarcoma stains blue on H&E stain but not readily and grossly...so elderly pt..ewings occur in young boys mostly...i will go with chondrosarcoma thinking that would be option D.
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Old 02-07-2012
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Quote:
Originally Posted by Hitman View Post
Ans ..........D.............thinking of chondrosarcoma ....
I feel the same
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Quote:
Originally Posted by doctordexter View Post
Ans..D...Ewings sarcoma stains blue on H&E stain but not readily and grossly...so elderly pt..ewings occur in young boys mostly...i will go with chondrosarcoma thinking that would be option D.
Isnt it more common in younger females
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Old 02-08-2012
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D...chondrosarcoma
Chondrosarcoma is one of the tumor that has peak around 40 - 60 years. and may arise from other cartilaginous tumors. And they are usually in pelvis
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