<prompt> Which is the most common clinical feature of Ewings sarcoma?FeverLimpPainPalpable mass  <response>: Ans. C. Pain. Ref. Practical Orthopedics by Ebnezarpg.92.Ewings sarcoma: Clinical history patient is usually male. Age grp 4-25 yrs Long bones most commonly affected Pain is the presenting feature. Pain may be intermittent and worse at night. Swelling locally and limp may be present. PatientCLINICAL FINDINGS of Osteosarcoma and Ewing Sarcoma OsteosarcomaEwing SarcomaLocal tenderness94 9233 70Palpable mass40 3916 34Painful movement of joint40 3916 34Restricted movement of joint23 238 17Fever reported or measured3 314 30Atrophy of muscle5 50 0Limpt noted or reported28 3119 40 