This is a pathologically proven teratoma of the orbit. It has characteristic imaging features (fat and calcification). Histopathologic examination of the tumor revealed orderly arranged mature ectodermal elements (squamous epithelium with adnexal structures), mature mesodermal elements (adipose tissue, cartilage, and bone), and endodermal elements (developing small intestine). The latter of which was seen on hematoxylin and eosin-stained slides as intestine with notable areas of mucosa, submucosa, muscularis propria, and serosa. The mucosa showed multifocal villous architecture with Goblet cells, scattered Paneth cells, and enteric ganglion cells. No immature tissue or malignancy was identified.

Co-authors:
Travis Bevington, MD
Gaetano Pastena, MD
Joseph Giampa, DO