Xanthomatous bone tumor, isolated or multiple, occurring in the absence of the Schüller-Christian syndrome is rare. Recognition of this unusual lesion has proceeded apace with delineation of the Schüller-Christian syndrome.
Bony tumors such as those described by Zeyland and Dega and by Krogius, which seem to be classic examples of giant cell tumor with secondary lipoid deposition, bear no resemblance to the type of tumor here described.
REPORT OF A CASE
An Italian boy aged 12 noticed pain and swelling of the left tibial tuberosity five or six weeks before he was first examined, on Oct. 26, 1936. The boy had always been physically active. He remembered no severe injury to his leg or knee, but he had bumped his knee a week previously, while playing football. He had sharp pain on direct pressure over the tibial tuberosity. There was no pain in the left thigh. A diagnosis of Osgood-Schlatter