Figure 1.Figure 2. REPORT OF A CASEA female infant was delivered by cesarean section at 41 weeks' gestation because of failure to induce labor. She was normal until 18 days of age, when her aunt, while bathing the baby, noted numerous "bumps" under the patient's skin. These lesions were shown to her pediatrician, who found no other abnormalities. There was concern about possible malignancy, and so the patient was transferred to North Carolina Memorial Hospital, Chapel Hill, for evaluation.On admission, several 0.5-to 1.0-cm erythematous to violaceous, slightly raised, freely movable, firm Figure 3.nodules were found on the upper back, anterior aspect of the chest, and left axilla (Figs 1 and 2). The lesions were not warmer than the rest of the skin, did not feel cystic, and did not appear to be tender. Results of laboratory evaluations, including cultures, complete blood cell count, and electrolyte level, were negative or normal. Her serum calcium level was 9.5 mg/dL (2.37 mmol/L) (normal, 7 to 12 mg/dL [1.75 to 2.99 mmol/L]).A biopsy specimen from the left axillary lesion was obtained (Figs 3 and 4).What is your diagnosis? Figure 4.Clinicians, local and regional societies, and residents andfellows in dermatology are invited to submit quiz cases to this section. Cases should follow the established pattern and be submitted double-spaced and in triplicate. Photomicrographs and illustrations must be clear and submitted as positive color transparencies (35 mm). Do not submit color prints unless accompanied by original transparencies. If photomicrographs are not available, the actual slide from the specimen will be acceptable.