A dermoid cyst is a teratoma of a cystic nature that contains an array of developmentally mature, solid tissues. It frequently consists of skin, hair follicles, and sweat glands, while other commonly found components include clumps of long hair, pockets of sebum, blood, fat, bone, nail, teeth, eyes, cartilage, and thyroid tissue. [Source: Wikipedia ]

Dermoid cyst
Is A
Embryonal remnant tumor
May Cause
Abdominal calcification in an infant or child
Adrenal calcification
Annular abdominal calcification
Anterior indentation on rectosigmoid junction
Avascular intracranial mass
Base of tongue mass
Button sequestrum of skull
Calcifications in female genital tract
Complex cystic adnexal mass
Complex pelvic mass
Cystic floor-of-mouth mass
Cystic pelvic mass
Cystic salivary gland mass
Enlarged intervertebral foramen
Enlargement or erosion of sella turcica
Erosion of mastoid
Erosion of middle ear
Erosion of tympanic portion of petrous bone
Extraconal orbital lesion
Extradural lesion with normal adjacent bone
Extradural spinal lesion
Extraglobal calcification
Extratesticular tumor in scrotum
Fatty mass in abdomen
Fatty parapharyngeal space lesion
Fatty tumor of the neck
Focal calcification in kidney
Focal cystic or low density splenic lesion
Fourth ventricular lesion
Hypodense sellar lesion
Hypodense suprasellar lesion
Hypodense supratentorial lesion
Increased presacral space
Infratentorial intracranial tumor in a child
Intestinal obstruction in an adult
Intracranial fat
Intradural extramedullary spinal lesion
Intramedullary spinal lesion
Intraorbital calcification
Intraventricular lesion
Lacrimal gland enlargement
Layering abdominal calcifications
Lower abdominal calcification
Lower abdominal mass in a neonate or child
Minimally enhancing intracranial lesion
Nasal cavity lesion
Nasal ridge mass in a child
Nasopharyngeal lesion
Non-neoplastic bone lesion
Nonvisceral abdominal calcification
Orbital bony defect
Orbital wall sclerosis
Oropharyngeal lesion
Ovarian dermoid cyst
Paralaryngeal cystic mass
Paranasal sinus mass
Parasellar calcification
Parasellar lesion
Posterior fossa cystic lesion
Posterior fossa tumor in a child
Posterior vertebral scalloping
Presacral mass
Radiolucent skull lesion
Renal cystic disease
Retrobulbar mass
Sacrococcygeal mass
Salivary gland enlargement
Sclerosis of the orbital roof
Sellar lesion
Sinonasal lesion
Soft-tissue neck mass
Solitary intracranial calcification
Solitary lesion of spleen
Solitary osteolytic skull lesion
Solitary splenic calcification
Splenic calcification
Sublingual space lesion
Submandibular space lesion
Supratentorial intracranial tumor in a child
T1-hyperintense intracranial lesion
T2-hyperintense intracranial lesion
Trigeminal nerve lesion
Unilateral exophthalmos
Upper abdominal mass in a neonate or child
Vallecular mass
May Be Caused by
Oculo-ectodermal syndrome
Oculoectodermal syndrome