The American Society of Dermatopathology

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Interactive Case Study - October 2012

Subcutaneous mass in a healthy infant

Colt M. McClain, MD; Melissa P. Piliang, MD

Question 1:


Clinical History

A 9-month-old male presented with a left upper back mass overlying the scapula.  The histology from the case is presented below (Figures 1-4).

Figure 1

Figure 2

Figure 3

Figure 4


Which of the following is the best diagnosis?