Surgery>>>>>Chest Wall, Pleura, and Mediastinum
Question 13#

Laboratory evaluation of a chest wall mass showing elevated erythrocyte sedimentation rates indicates:

A. Osteosarcoma
B. Plasmacytoma
C. Ewing sarcoma
D. Multiple myeloma

Correct Answer is C

Comment:

Laboratory evaluations are useful in assessing chest wall masses for the following:

1. Plasmacytoma: Serum protein electrophoresis demonstrates a single monoclonal spike, which is measuring the overproduction of one immunoglobulin from the malignant plasma cell clone.
2. Osteosarcoma: Alkaline phosphatase levels may be elevated.
3. Ewing sarcoma: Erythrocyte sedimentation rates may be elevated.