Question..........................4 - psychmledr - Printable Version +- USMLE Forum - Largest USMLE Community (https://www.usmleforum.com) +-- Forum: USMLE Forum (https://www.usmleforum.com/forumdisplay.php?fid=1) +--- Forum: Step 1 (https://www.usmleforum.com/forumdisplay.php?fid=2) +--- Thread: Question..........................4 - psychmledr (/showthread.php?tid=776622)

Question..........................4 - psychmledr - ArchivalUser - 04-30-2014 A 24-year-old baseball player visits his doctor with complaints of right arm pain. On questioning, he states that it has hurt for several weeks but he has been ignoring it, attributing to muscle strain. Radiographic examination demonstrates an expansile, lytic proximal right humeral epiphyseal lesion. Based on the clinical, radiologic, and biopsy findings, the mass and proximal humerus are resected. On gross examination, the mass demonstrates hemorrhagic areas with multiple small spindle-shaped cells. Laboratory tests performed at the same time demonstrate normal serum and calcium levels. Which of the following is the likely diagnosis? (A) Aneurysmal bone cyst (B) Brown tumor © Giant cell tumor (D) Ewing sarcoma (E) Osteoid osteoma 0 - ArchivalUser - 04-30-2014 C?. ty 0 - ArchivalUser - 04-30-2014 CC thanks 0 - ArchivalUser - 04-30-2014 "C" is right. Would either of you like to tell us why it is "Giant Cell tumor?" 0 - ArchivalUser - 04-30-2014 Giant-cell tumor most common between ages 20 and 40; made of giant cells and a mononuclear cell stroma, benign but locally aggressive lesion its in the epiphysis of the long bones and may have “soap bubble” and spindle-shaped mononuclear cells! thanks 0 - ArchivalUser - 04-30-2014 Right. Thanks, Exam Hope you are doing well 0 - ArchivalUser - 04-30-2014 Thanks doing OK! its my birth day, so skipped work a bit and hanged out on the forum 0 - ArchivalUser - 04-30-2014 HAPPY BIRTHDAY!!! GOD BLESS YOU 0 - ArchivalUser - 04-30-2014 Thanks )