Figure 1. Computed tomographic scan showing lesion eroding the bone of the occipital area of the calvaria.
Figure 2. Left, Sections of cellular lesion composed of histiocytes with abundant eosinophilic cytoplasm and an infiltrate composed predominantly of eosinophils. Right, High-power view showing histiocytes with lobulated nuclei, some with longitudinal grooves (hematoxylin-eosin, original magnifications ×100 [left] and ×400 [right]).
Pathological Case of the Month. Arch Pediatr Adolesc Med. 1998;152(1):92. doi: