What does a dermoid cyst look like?
A dermoid cyst looks like a small lump under the skin. The skin over the lump can easily be moved. The lump may be skin-colored, or may have a slight blue color. The symptoms of a dermoid cyst can seem like other health conditions.
Table of Contents
Should I be worried about a dermoid cyst?
Dermoid cysts are usually harmless, but some may cause complications depending on their size and location. If you or your child has a dermoid cyst, talk to your healthcare provider about the best ways to treat it. Your provider can often remove a dermoid cyst through surgery.

Is a dermoid cyst cancer?
Dermoid cysts are benign (not cancer) and tend to grow slowly. They are present at birth but may not be found until later in life. Dermoid cysts are a type of germ cell tumor called a mature teratoma.
What does a dermoid cyst look like on ultrasound?
It appears as an echogenic mass within the cyst made up of hair, teeth or fat 3 . Dermoid mesh; as the name implies, the appearance on ultrasound is of multiple small hyperechoic lines and dots within the cyst forming a “mesh‐like” picture. These echogenic foci are small hairs floating in the cystic fluid.

Why do dermoid cysts develop?
Dermoid cysts are caused when skin and skin structures become trapped during fetal development. Their cell walls are nearly identical to those of the outer skin and may contain multiple skin structures such as hair follicles, sweat glands, and sometimes hair, teeth, or nerves.
Why do dermoid cysts happen?
Unlike most ovarian cysts, dermoid cysts don’t form in response to your menstrual cycle. Instead, like other dermoid cysts, they form when fully developed tissue collects in an odd location (like in your ovaries). Ovarian dermoid cysts aren’t cancerous, but they can cause complications if they grow too large.
What happens if a dermoid cyst is not removed?
Without treatment, the twisting can harm the ovary or cause it to die. Rupture: These cysts can burst, leaking their contents into your abdominal cavity. Often, your body absorbs the contents of ruptured cysts with no problem. Sometimes, ruptured cysts lead to infection and require emergency medical attention.
At what size should a dermoid cyst be removed?
Dermoid cysts are ‘growths’, but many grow so slowly (1 – 2 mm per year) that surgery is often not recommended unless they reach about 5cm (occasionally your gynaecologist may recommend removing a smaller dermoid). Both of these complications usually cause sudden severe pain and may need urgent surgery.
Can a dermoid cyst be misdiagnosed?
Dermoid cysts, hydrosalpinges, functional cysts, paraovarian cysts, peritoneal pseudocysts, fibromas/fibrothecomas and simple cysts were never misdiagnosed as malignancies by the ultrasound examiner, whereas more than 10% of inflammatory processes, adenofibromas and rare benign tumors including struma ovarii were …
Can dermoid cysts be misdiagnosed?
Some dermoid cysts contain lipid-rich liquid, and these may be misdiagnosed as lipomas by MRI. When a tumor is located at a common site for a dermoid cyst, the MRI images should be validated carefully if it appears like a lipoma, and the differential diagnosis should be considered carefully.
Can you tell if a cyst is cancerous from an ultrasound?
Ultrasound images are not as detailed as those from CT or MRI scans. Ultrasound cannot tell whether a tumor is cancer. Its use is also limited in some parts of the body because the sound waves can’t go through air (such as in the lungs) or through bone.
Are dermoid cysts genetic?
In 28 families of the study group (9.8%), a dermoid cyst was found in at least 1 first-degree relative as compared with only eight families (2%) among the controls (adjusted odds ratio -5.60; 95% CI 2.24-14.2). The data suggest a genetic predisposition towards dermoid cysts which merits further exploration.
Is dermoid cyst harmful?
Usually, untreated dermoid cysts are harmless. When they’re located in and around the face and neck, they can cause noticeable swelling under the skin. One of the main concerns with a dermoid cyst is that it can rupture and cause an infection of the surrounding tissue.
What kind of doctor removes dermoid cysts?
If the cyst has any connection with the skull or tissues deeper within the body, the procedure is performed with a plastic surgeon and a neurosurgeon.
Can dermoid cyst be treated without surgery?
Superficial dermoid cysts on the face usually can be removed without complications. Removal of other, more rare dermoid cysts requires special techniques and training.
How quickly do dermoid cysts grow?
Dermoid cysts are thought to be very slow growing, with an average growth rate of 1.8 mm/year in premenopausal women. In fact, rapid growth of an ovarian mass, greater than 2 cm per year, has been used to exclude ovarian teratomas as a diagnostic consideration.
Can a doctor tell the difference between a cyst and tumor?
In most cases, you can’t tell the difference between a cyst and a tumor just by looking at them. However, there are a few things you can watch for to see whether it’s more likely to be a cyst or a tumor. Keep in mind that these aren’t strict rules, so it’s best to have your doctor take a look.
What type of cysts are cancerous?
These are cysts that harbor cancer or have the potential to become cancer. They are characterized by cells that secrete mucinous material into the cyst. These cysts can be classified into two categories: mucinous cystic neoplasms and intraductal papillary mucinous neoplasms.
What causes dermoid cysts to grow?