The cyst was freely incised, and there were found numerous openings of sweat glands, from which drops of perspiration escaped when the patient was sweating.
Dermoid cysts of the thorax are rare.

Bramann reported a case in which a dermoid cyst of small size was situated over the sternum at the junction of the manubrium with the gladiolus, and a similar cyst in the neck near the left cornu of the hyoid bone.

Chitten removed a dermoid from the sternum of a female of thirty-nine, the cyst containing 11 ounces of atheromatous material.

In the Museum of St.Bartholomew's Hospital in London there is a congenital tumor which was removed from the anterior mediastinum of a woman of twenty one, and contained portions of skin, fat, sebaceous material, and two pieces of bone similar to the superior maxilla, and in which several teeth were found.
Dermoids are found in the palate and pharynx, and open dermoids of the conjunctiva are classified by Sutton with the moles.

According to Senn, Barker collected sixteen dermoid tumors of the tongue.