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Arch Ophthalmol. 2001;119:849.

Congratulations to the winner of our February quiz, Mallika Goyal, MD, Retina Service, Apollo Eye Hospital, Hyderabad, India. The correct answer to our February challenge was leukemia. For a complete discussion of this case, see the Clinicopathologic Reports section in the March ARCHIVES (Esmaeli B, Medeiros LJ, Myers J, Champlin R, Singh S, Ginsberg L. Orbital mass secondary to precursor T-cell acute lymphoblastic leukemia: a rare presentation. Arch Ophthalmol. 2001;119:443-446). (Figure 1)

Figure 1. Enhanced computed tomography images reveal the left superior medial orbital mass. A, Coronal computed tomography image shows the left extraconal, marginally enhancing mass (arrows). B, An axial computed tomography image also demonstrates the superior orbital mass (arrowheads).

Be sure to visit the Archives of Ophthalmology World Wide Web site (http://www.archophthalmol.com) and try your hand at our Clinical Challenge Interactive Quiz. We invite visitors to make a diagnosis based on selected information from a case report or other feature scheduled to be published in the following month's print edition of the ARCHIVES. The first visitor to e-mail our Web editors with the correct answer will be recognized in the print journal and on our Web site and will also receive a free copy of the book One Hundred Years of JAMA Landmark Articles.