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Old 10-03-2012
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Arrow Billy Step 1 Questions #6

A 47-year-old man sees the physician because he has had dull, constant pain in the midsection of the right thigh for the
past 4 months. On physical examination, there is pain on palpation of the anterior right thigh, which worsens slightly with
movement. The right thigh appears to have a larger circumference than the left thigh. A radiograph of the right upper leg
and pelvis shows no fracture, but there is an ill-defined soft-tissue mass anterior to the femur. MRI shows a 10 8 7 cm solid mass deep to the quadriceps, but it does not involve the femur. What is the most likely diagnosis?


□ (A) Nodular fasciitis
□ (B) Liposarcoma
□ (C) Osteosarcoma
□ (D) Rhabdomyosarcoma
□ (E) Hemangioma
□ (F) Chondrosarcoma
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  #2  
Old 10-03-2012
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I am not sure but pain, mass, not related to bone, ill defined soft tissue mass.
I will go with A. Nodular fascitis
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Old 10-03-2012
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Default Bb

liposarcoma?
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  #4  
Old 10-03-2012
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Default my answer :)

□ (B) Liposarcoma
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Old 10-03-2012
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My answer B) Liposarcoma
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Old 10-03-2012
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i go with d
though rhabdomyosarcoma is present in children mostly
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Old 10-03-2012
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b) liposarcoma
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Old 10-03-2012
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Default B is correct

A large soft-tissue mass suggests cancer, most likely a sarcoma. Liposarcomas are located in deep soft tissues,
can be indolent, and can reach a large size. They are the most common sarcomas of adulthood. Osteosarcomas generally
occur in individuals younger than 20 years and typically arise in the metaphysis. Nodular fasciitis is a reactive fibroblastic
lesion of young adults, usually on the upper extremities and trunk, and can develop several weeks after local trauma.
Rhabdomyosarcoma occurs in children and is most often a tumor of the head and neck, genitourinary tract, or
retroperitoneum. Hemangiomas, when present in the extremities of adults, tend to be small, circumscribed lesions on the
skin. Chondrosarcomas can be seen over a wide age range, but they arise within bone.
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The above post was thanked by:
adeelsaleemi (10-04-2012), aim_99 (01-08-2013), MANIAKOS (10-04-2012), nishaa (10-03-2012), rupesh (10-03-2012)



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