Dr. Dimple Doshi (MBBS, MD, DGO)
Lady Gynecologist & Laparoscopic Surgeon
27+ years’ experience
20,000+ surgeries completed
Most dermoid cysts are discovered by surprise — on a scan done for something else — and the report’s mention of “hair and teeth” is genuinely unsettling. Does this sound familiar?
Did a routine sonography mention a “dermoid” or “complex cyst” and leave you frightened by the description?
Have you read that these cysts contain hair and teeth and wondered how that is even possible?
Is your first fear cancer — and your second, losing the ovary?
Are you having vague lower-abdominal pain, bloating or urinary pressure that you had been ignoring?
Are you unmarried or yet to have children and worried what surgery means for your fertility?
Has someone advised you to “wait and watch” while the cyst quietly grows each year?
These concerns are common. Dermoid cysts account for about 20% of ovarian germ-cell tumours and are the most common benign ovarian tumour in women under 45, typically discovered in the 20s and 30s; around 12% involve both ovaries (StatPearls, NCBI 2023). The reassuring arithmetic: roughly 98 in 100 are and remain benign.
The good news is that a dermoid cyst is one of the most satisfying conditions to treat laparoscopically — the cyst comes out, the ovary stays, and the “hair and teeth” go to the pathology lab where they belong. Dr. Dimple Doshi has 500+ patients treated for dermoid cysts, the large majority with the ovary preserved.
Global Stats: ~20% — share of ovarian germ-cell tumours that are dermoids; commonest benign ovarian tumour under 45 · ~12% — bilateral · 1–2% — malignant transformation · 3–21% — torsion risk, highest at 5–15 cm (all StatPearls/NCBI 2023) · 500+ patients treated for dermoid cysts.
A dermoid cyst — medically a mature cystic teratoma — is a usually benign ovarian growth formed from cells present since before birth, which can contain hair, teeth, bone, fatty material and even thyroid tissue. It is the most common benign ovarian tumour in women under 45. Treatment is surgical removal, almost always by 3D laparoscopic cystectomy that preserves the healthy ovary.
Benign in ~98% of cases — malignant change occurs in only 1–2%, mainly in older women with long-standing large cysts (StatPearls 2023).
Why it is still removed: dermoids grow slowly but steadily and can twist (torsion) or rupture — genuine emergencies that can cost the ovary.
One of many ovarian cyst types (see ovarian cyst treatment) — the diagnosis is usually clear on ultrasound because of the fat and calcium inside.
Treated in Goregaon West, Mumbai by Dr. Dimple Doshi at Vardaan Hospital with ovary-sparing keyhole surgery, usually one night in hospital.
A dermoid cyst is a sac formed from primitive cells that can develop into any tissue type — so it may contain hair, teeth, bone, cartilage, fatty fluid, waxy sebum, skin and thyroid tissue. Most are a few centimetres when found; they grow slowly (about 1.8 mm a year on average) but sizes up to 45 cm have been reported.
Typical contents: fatty/oily fluid and sebum (almost always), hair (very commonly), teeth or bone fragments, cartilage, occasionally thyroid tissue.
Size range: from about a centimetre to — in reported extremes — 45 cm; most surgical dermoids are 5–15 cm, which is also the size band where twisting is most likely (StatPearls 2023).
Slow but real growth — ~1.8 mm/year on average, which is why “it’s small, forget it” is a decision to revisit, not a discharge.
Usually silent — most cause no symptoms until they are large, twist, or rupture.
Dermoid cysts arise from germ cells — egg-line cells present in the ovary since before birth — which begin developing skin-type and other tissues inside a sac. They are therefore congenital in origin: nothing you did caused one, nothing you could have done would have prevented it, and there may be a mild familial tendency.
Present since birth — the cyst’s cells were always there; it simply grows large enough to be noticed, often in the 20s–30s, sometimes in the teens (see adolescent gynaecology).
Also occur outside the ovary — the same cell-entrapment process can produce dermoids near the skull, spine or sinuses; this page concerns the ovarian type.
Possible genetic predisposition in first-degree relatives — a family history is worth mentioning at consultation.
Not caused by hormones, diet, contraception or lifestyle — and not preventable.
Most dermoid cysts cause no symptoms and are found incidentally on a scan. When symptoms appear they come from size and pressure: aching lower-abdominal or back pain, bloating, urinary frequency from bladder pressure, discomfort during intercourse, or menstrual disturbance. Sudden severe pain is different — that is the emergency picture of twisting or rupture.
Abdominal or lower back pain — typically dull and intermittent.
Pain during intercourse — deep, positional; see dyspareunia.
Nausea, with or without vomiting.
Urinary problems — frequency or incomplete emptying from a large cyst pressing on the bladder.
Abnormal vaginal bleeding — uncommon; always evaluated in its own right.
Abdominal distension and bloating — with larger cysts.
The treatment of an ovarian dermoid cyst is surgical removal — dermoids do not dissolve with medicines, and hormonal pills do not shrink them. The standard operation is laparoscopic ovarian cystectomy: the cyst is shelled out and the healthy ovary preserved. Very small, symptom-free dermoids in selected women can alternatively be monitored with scheduled scans.
Why surgery rather than waiting, for most: steady growth, a 3–21% lifetime chance of torsion (highest at 5–15 cm), a 1–4% risk of rupture, and the small but real 1–2% malignant-transformation risk in long-standing cysts (StatPearls 2023). Early, planned surgery is smaller surgery.
Laparoscopy is the method of choice — see 3D laparoscopic surgery — a slender telescope through the navel and instruments through keyhole incisions; faster recovery, less pain, better cosmetic result. A diagnostic laparoscopy view also inspects the other ovary (about 12% are bilateral).
Laparotomy (open surgery) — reserved for very large cysts or where cancer is suspected pre-operatively.
Medicines have a role only around surgery — pain relief and, where needed, treating infection; they are not a treatment for the cyst itself.
Laparoscopic dermoid cystectomy shells the intact cyst out of the ovary through keyhole incisions, places it in a retrieval bag, and removes it without spilling its contents — spill prevention matters, because dermoid fluid is irritant to the abdomen. The healthy ovarian tissue is preserved with its blood supply, and most women go home the next day.
Anaesthesia and access — general anaesthesia; camera port at the navel, two or three 5 mm working ports. See preparing for surgery.
Cystectomy — the cyst is carefully separated from normal ovarian tissue along its capsule, keeping the ovary and its blood supply intact — the ovary-sparing approach Dr. Doshi applies to every dermoid where feasible.
In-bag removal — the cyst goes into a laparoscopic retrieval bag and is drained/extracted inside the bag through a keyhole, avoiding spillage of sebum and hair into the abdomen; the pelvis is washed thoroughly.
Both ovaries inspected — because of the bilateral tendency; anything suspicious is documented or biopsied.
Histopathology always — every removed dermoid is examined microscopically; this is what finally confirms the benign diagnosis.
Oophorectomy (removing the ovary) — chosen only when no normal ovary remains around a very large cyst, in torsion with a dead ovary, in postmenopausal women, or when malignancy is suspected — discussed and consented beforehand, never improvised.
A dermoid cyst turns cancerous in only about 1–2% of cases — roughly 98% are and remain benign. Malignant transformation is mainly a risk of long-standing, large cysts in older women, which is precisely why a dermoid found young is removed electively rather than watched for decades.
The risk factors (unchanged from long-standing clinical experience and the literature): higher CA-125 levels · older age · long-standing cysts · large masses · postmenopausal status.
The commonest transformation is squamous-cell carcinoma, typically between 40 and 60 (StatPearls 2023).
What this means practically: a 25-year-old’s 6 cm dermoid is almost always benign — and removing it now is also what prevents it becoming a 12 cm postmenopausal problem. Any suspicious features route to the ovarian cancer pathway instead.
CA-125 and tumour markers are checked pre-operatively where indicated; mildly raised CA-125 has many benign causes and is interpreted, not feared.
A dermoid cyst and a chocolate cyst are entirely different conditions that share only the word “cyst”. A dermoid is a congenital germ-cell growth containing fat, hair and teeth; a chocolate cyst (endometrioma) is collected menstrual-type blood from endometriosis. They differ in cause, symptoms, cancer profile, fertility impact — and in how carefully surgery must treat the surrounding ovary.
Dermoid cyst (teratoma) | Chocolate cyst (endometrioma) | |
Origin | Congenital germ cells — present since birth | Endometriosis — acquired, hormone-driven |
Contents | Fat, sebum, hair, teeth, bone | Old altered blood (“chocolate” fluid) |
Typical pain | Silent until large, twisted or ruptured | Cyclical period pain, deep pain with intercourse |
Fertility | Usually none until surgery/torsion | Linked to infertility as part of endometriosis |
Recurrence after removal | Low (2–10%) | Recurs if endometriosis is not controlled |
Treatment | Cystectomy; no hormonal treatment works | Hormonal suppression ± excision, fertility-planned |
If your report says “endometrioma” or you have painful periods with the cyst, the endometriosis treatment page is the right place to continue reading. General cyst types are compared at ovarian cyst treatment.
A dermoid cyst itself usually does not affect fertility — it does not disturb hormones or ovulation the way endometriosis can. What matters is protecting the ovary: from torsion, and during surgery. Dermoids found in pregnancy are usually watched and dealt with after delivery unless they twist or obstruct.
Ovary-sparing cystectomy preserves egg reserve — the goal in every woman with future fertility plans; the remaining ovary continues working normally.
Before surgery for large or bilateral dermoids, options such as fertility preservation / egg freezing can be discussed for peace of mind.Trying to conceive? A known dermoid is factored into the fertility evaluation rather than treated in isolation.
In pregnancy — small dermoids are typically monitored through high-risk pregnancy care; surgery in pregnancy is reserved for torsion or rapidly enlarging cysts.
After torsion, prompt untwisting surgery can often save the ovary — another reason the emergency symptoms above must never be waited out.
Dermoid cyst treatment cost runs from a consultation to a laparoscopic cystectomy. Figures below are indicative “starting from” ranges at Vardaan Hospital, Goregaon West, exclusive of room category and GST, confirmed in writing after consultation.
| Step | Indicative range (₹) |
|---|---|
| Gynaecology consultation | From ₹1,000 |
| Ultrasound ± tumour markers | ₹2,500 – ₹6,000 |
| Diagnostic / basic operative 3D laparoscopy | ₹30,000 – ₹70,000 |
| Laparoscopic dermoid cystectomy | ₹50,000 – ₹1,50,000 |
| Emergency torsion surgery | ₹75,000 – ₹1,50,000 |
Mediclaim generally covers surgery for a documented ovarian cyst; pre-authorisation is handled by the hospital desk; emergency torsion admissions follow the emergency route.
Dr. Dimple Doshi (MBBS, MD, DGO) is a gynaecologist and laparoscopic surgeon with 27+ years’ experience and 20,000+ surgeries performed, practising at Vardaan Hospital, Goregaon West, Mumbai. Her stated aim in every dermoid operation is to preserve the maximum normal ovary with its blood supply intact while removing the cyst completely.
500+ patients treated for dermoid cysts — from small incidental findings to emergency torsions.
Ovary-sparing by default — cystectomy, not oophorectomy, wherever normal tissue exists.
Spill-conscious technique — in-bag extraction and thorough lavage, protecting the abdomen from irritant contents.
3D laparoscopy — depth perception where it matters: at the plane between cyst wall and the last millimetres of healthy ovary.
For insurance and mediclaim paperwork, a benign ovarian dermoid (mature cystic teratoma) is coded under ICD-10 D27 (benign neoplasm of ovary — in ICD-10-CM, D27.0 right, D27.1 left, D27.9 unspecified). N83.2x (ovarian cyst, unspecified) applies only before histology confirms the diagnosis. Indian hospitals and insurers use ICD-10; American CPT codes are not used for billing in India.
D27 / D27.0 / D27.1 / D27.9 — benign neoplasm of ovary (side-specific in ICD-10-CM).
N83.2x — unspecified ovarian cyst (pre-histology only).
Ans. Almost never at diagnosis — about 98% are benign, and malignant change over time occurs in only 1–2%, mainly in long-standing large cysts in older women. Every removed dermoid is examined by histopathology, which is what finally confirms the benign diagnosis.
Ans. Because it grows from germ cells — primitive cells capable of forming any body tissue. Trapped in the ovary since before birth, they differentiate into skin-type tissues: hair, sebum, teeth, bone, even thyroid tissue. Strange to read about, but entirely benign biology.
Ans. No. Dermoids are congenital — the cells were present before you were born. They are not caused by diet, hormones, contraception, or lifestyle, and they are not preventable. A mild familial tendency exists, so mention any family history.
Ans. No. Unlike simple functional cysts, dermoids do not resolve and hormonal pills do not shrink them — they grow slowly (about 1.8 mm/year on average). That is why the definitive treatment is removal, and why “watch and wait” is only for selected small, symptom-free cysts with scheduled scans.
Ans. Not immediately — but most need it eventually, and planned early surgery is smaller and safer surgery. Removal is advised because of growth, the 3–21% torsion risk (highest at 5–15 cm), the 1–4% rupture risk, and the small malignant-transformation risk of long-standing cysts.
Ans. The cyst’s weight can twist the ovary on its stalk, cutting off blood supply. Sudden severe one-sided pain with vomiting is the classic picture. Untwisted within hours the ovary usually survives; delayed, it becomes gangrenous and must be removed. It is the single most important reason not to ignore a known dermoid.
Ans. Usually not. The standard operation is cystectomy — shelling the cyst out while preserving normal ovarian tissue and its blood supply. The ovary is removed only when none remains around a huge cyst, after gangrene from torsion, in postmenopausal women, or for suspected malignancy — always discussed beforehand.
Ans. Recurrence after cystectomy is reported at 2–10%, sometimes years later — occasionally a second small dermoid was already forming. An annual scan for a few years is reasonable follow-up.
Ans. Usually yes — dermoids do not typically interfere with ovulation or hormones. The concerns are torsion risk in pregnancy and protecting ovarian tissue at surgery, which is why a known dermoid is ideally dealt with before planned conception. Cysts found during pregnancy are usually monitored until after delivery.
Ans. About 12% of dermoids are bilateral. Both can usually be treated by cystectomy in one laparoscopy, preserving tissue on both sides; fertility-preservation counselling before surgery is sensible when cysts are large. The other ovary is always inspected during any dermoid operation.
Ans. Typically one night in hospital, desk work within about a week, and full activity by two to four weeks, with keyhole scars that fade well.
Ans. When one is first reported on any scan — for proper sizing, marker testing where indicated, and a plan. Immediately for sudden severe abdominal pain, pain with vomiting, fever or fainting: that is the torsion/rupture picture and it is time-critical.
