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Michael P. Heffernan, MD; Danette D. Bentley, MD; Beatriz Tapia, MD; Paul Klekotka, MD, PhD
Wright State University School of Medicine, Dayton, Ohio (Dr Heffernan), and Washington University, St Louis, Missouri (Drs Bentley, Tapia, and Klekotka)

Arch Dermatol. 2007;143(7):937-942.

	Since this article does not have an abstract, we have provided the first 136 words of the full text and any section headings.

REPORT OF A CASE

A previously healthy 42-year-old white woman presented with a 1-year history of a painful nodule on her left knee. A biopsy specimen of the lesion had been obtained 9 months earlier, revealing a necrobiotic granuloma consistent with granuloma annulare. The patient was unavailable for follow-up until the lesion recurred and she returned to our clinic because of the discomfort.

Physical examination revealed a 2.0 x 1.5-cm brownish pink nodule with a variegated surface on the lateral aspect of the left knee (Figure 1). The patient was otherwise asymptomatic, and no other abnormalities were noted on physical examination. Punch biopsy specimens were obtained (Figure 2 and Figure 3).

Figure appears in full text version. Figure 1.

Figure appears in full text version. Figure 2.

Figure appears in full text version. Figure 3.

What is your diagnosis?

SECTION EDITOR: MICHAEL E. MING, MD, MSCE

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Painful Nodule on the Knee—Diagnosis
Arch Dermatol. 2007;143(7):937-942.
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