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November 1936


Arch Ophthalmol. 1936;16(5):776-782. doi:10.1001/archopht.1936.00840230056004

Dermoid tumors of the globe, which are solid formations, are relatively common, whereas true dermoid cysts of the orbit are of the rarest occurrence, probably being rarer than intra-ocular retinoblastoma or sarcoma. The typical location of such a cyst is in the upper temporal quadrant of the orbit, near the lacrimal gland. In this location it is easily diagnosed as a smooth rounded mass, adherent to the periosteum, over which the skin moves freely. Should it be located in the upper nasal quadrant, which seldom happens, it must be differentiated from a cephalocele, which is also exceedingly rare in the orbit. Wherever the location may be, one should consider the possibility of the presence of diverticula extending far into the depth of the orbit, as in cases of cyst of the sacrococcygeal region. Under the title of "Oil Cyst of Orbit," Knapp1 reported a case of a dermoid

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