A sebaceous cyst or lipoma: what happens if I leave it and don't have it removed?
This guide covers whether a sebaceous (epidermal) cyst or lipoma goes away on its own if left in place, whether it can be squeezed at home, and which changes call for considering removal. Myongji Best Plastic Surgery Clinic in Myeongji-dong, Busan explains the natural course, studies on inflamed cysts, removal and recovery.
Quick answer
A sebaceous (epidermal) cyst or lipoma that is painless and not changing in size can be watched once its type is confirmed, but Myongji Best Plastic Surgery Clinic in Myeongji-dong, Busan advises that neither one often goes away on its own. A sebaceous cyst may stay the same or grow slowly and then suddenly swell and hurt if it bursts, and squeezing it at home can make the inflammation worse or leave the capsule behind so it comes back. When redness, pain or warmth develops or inflammation keeps returning, or when the lump grows or feels hard and fixed, it is best to have it checked, including whether to remove it.
Why it matters now
Sebaceous cysts and lipomas are usually harmless, so they are not lumps that must be cut out as soon as they are found, but simply watching one and trying to squeeze it out yourself lead to different results. Also, the two are hard to tell apart accurately just by looking or feeling, so even if you decide to watch it, having the type checked once lets you judge later when something changes.
Sebaceous cyst or lipoma: when can I leave it, and when should I consider removal?
If it is painless, the same size and causes no trouble in daily life, it can be watched once the type of lump is confirmed. A sebaceous cyst that swells and hurts or keeps getting inflamed in the same spot, and a lump that grows and presses on its surroundings or feels hard and fixed, should be checked in clinic, including whether to remove it.
| If this is your situation | Option considered | Evidence and limits |
|---|---|---|
| Painless, no change in size, no trouble in daily life | Option consideredConfirm the type of lump, then watch it | Evidence and limitsThe NHS advises that skin cysts causing no problems do not need treatment and that lipomas usually do not need to be removed. |
| A sebaceous cyst suddenly turns red, swollen and painful, or bursts | Option consideredDo not squeeze it; have the inflammation checked in clinic | Evidence and limitsSwelling from a burst cyst may be a reaction to keratin, but true infection also occurs, so it is distinguished in clinic. Removal has generally been done after the inflammation settles, but there are also studies of immediate removal. |
| A sebaceous cyst keeps getting inflamed in the same spot | Option consideredConsider surgery that removes it with the capsule | Evidence and limitsEven if it shrinks after the contents drain, it can come back if the capsule remains. |
| A lipoma grows and causes a pressing feeling or pain | Option consideredConsider removing the whole lesion after a consultation | Evidence and limitsAn ordinary lipoma is described as painless, and pain may come from pressure on surrounding tissue or from a different diagnosis. |
| Hard and does not move well, or has recently grown quickly | Option consideredDo not wait; have it checked in clinic | Evidence and limitsA lump that newly grows quickly or is fixed is described as needing the original diagnosis to be re-checked. |
Do sebaceous cysts and lipomas go away on their own if left alone?
It is rare for either to go away on its own. A sebaceous (epidermal) cyst may stay the same for years or grow slowly, and it may discharge foul-smelling keratin through the central opening or burst under the skin and suddenly swell and hurt.
A lipoma usually grows slowly over several years and then stops growing, and the sources we checked do not describe it going away on its own.
Smaller does not mean healed
A sebaceous cyst can look smaller once the inflammation settles or the contents drain, but if the capsule remains it can fill up again or come back.
A case where it came out on its own
A case was reported in which the wall of a burst sebaceous cyst came out by itself during dressing and did not recur for 1 year, but the authors themselves described it as an unexpected, rare outcome.
Usual treatment when it bursts, swells and hurts
When inflammation is severe, a steroid injection or drainage may be used, and antibiotics if it is infected. Generally, the approach has been to calm the inflammation first and remove the cyst 1-2 months later, but studies have reported that removing it right away while inflamed did not substantially increase complications, so the timing is decided in clinic.
Why lipomas develop
They generally first appear between 40 and 60 years of age, and rarely occur with conditions such as hereditary multiple lipomatosis. A study of 7,868 adults with lipomas found obesity, dyslipidemia, hypertension and type 2 diabetes more common than in the general population, but this only means they occur together; it does not identify the cause.
When a lipoma grows
A lipoma is a benign tumor formed when fat cells gather in one place, and as it grows it can press on surrounding tissue and cause discomfort.
Can I squeeze out a sebaceous cyst at home and remove it myself?
It is better not to squeeze it. Forcing it out by hand can make secondary infection or inflammation worse, and if only the contents come out and the capsule stays, it can come back in the same spot.
What can happen if you squeeze it
It can become inflamed as it bursts, or the inflammation can spread further if it is already inflamed.
If you already squeezed it
Leave it alone and have it checked in clinic for swelling, warmth or pus and for whether the capsule remains.
A lipoma cannot be squeezed out
A lipoma is a lump made of gathered fat cells, not a sac holding contents, so removal means excising the whole lesion.
How does Myongji Best Plastic Surgery Clinic remove sebaceous cysts and lipomas, and how much does it cost?
Myongji Best Plastic Surgery Clinic in Myeongji-dong, Gangseo-gu, Busan removes epidermal cysts and lipomas under local anesthesia, taking about 15 minutes per lesion. An epidermal cyst is removed with its capsule and a lipoma as the whole lesion, and the wound is closed along the skin lines. Daily activities are possible on the day of surgery, the standard recovery guidance is about 2 weeks, and treatment takes 1-2 visits.
The published non-covered fee list does not show a separate price for epidermal cyst or lipoma removal (checked November 2, 2026). Because local anesthesia and the surgical plan are decided after examining the lump's size, location and number, the cost and whether the removed tissue undergoes pathology are confirmed at consultation.
- STEP 01
Assessment
Check the lump's location, feel and accompanying symptoms.
- STEP 02
Anesthesia
The procedure is performed under local anesthesia and the surgical site is prepared.
- STEP 03
Lesion removal
Remove the capsule or the lesion tissue according to the type.
- STEP 04
Closure and progress check
The wound is closed along the skin lines, and suture removal and progress are checked.
Whether and when to remove the lump, and recovery, can vary with its size, location and inflammation, so follow the medical team's diagnosis and guidance. General values in this article, such as the course and recurrence rates, are reference figures based on published studies; the right judgment and cost for each person are confirmed at consultation.
What have studies shown about lumps that were left alone and lumps that were removed?
Myongji Best Plastic Surgery Clinic has no published statistics on watching or removing epidermal cysts and lipomas. In published studies, recurrence after epidermal cyst removal ranged from 3.6% to 8.3% depending on the removal method and follow-up approach, and a study of immediate removal of inflamed epidermal cysts reported a complication rate of 2.5%.
Myongji Best Plastic Surgery Clinic data
Epidermal cyst and lipoma course and removal outcome statistics: no published data
Mehrabi et al., 2002 (retrospective chart review and survey, cysts removed by punch incision)
The recurrence rate was 3.6% in the chart review and 8.3% among patients who answered the survey. Recurrence was higher for cysts removed from the back and ear, at 13.8% and 13.0%, and 54.5% of recurrences appeared within 1 year of removal.
Wang et al., 2020 (32 patients, 33 cysts, removed through a small hole made with a CO2 laser)
2 of 33 cysts (6.0%) recurred: 0 of 21 uninfected cysts and 2 of 12 infected cysts (16.7%).
Gwak et al., 2026 (two-center retrospective cohort, 444 epidermal cysts)
Cysts were excised and closed immediately regardless of inflammation, and 254 of 444 cases were classified as inflamed. Positive bacterial cultures were more common in inflamed cysts but were mostly skin commensals, and the overall complication rate was 2.5% (3.1% inflamed, 1.3% non-inflamed), with no significant difference between the groups.
Jun et al., 2010 (351 patients with inflamed sebaceous cysts, immediate excision vs the conventional method)
166 patients had immediate excision followed by 5 days of antibiotics, and 185 had antibiotics and incision and drainage, then excision 1-2 months later once the inflammation had subsided. Immediate excision was reported to involve a shorter duration of antibiotic use, lower morbidity and lower cost.
Milton et al., 2021 (histopathology results of 1,815 benign skin and subcutaneous lesions removed under local anesthesia)
The clinical diagnosis matched the histopathology result in 88.6% of lipomas and 72.7% of sebaceous cysts, and no malignancy was found in either. The authors considered that histopathology can be skipped for these two lumps when there are no red flags, but criteria differ between institutions.
Oh et al., 2026 (82 patients with lipomas, single-surgeon retrospective study)
There were no recurrences over a mean follow-up of 8.9 months; seroma occurred in 10.98% and hematoma in 7.3%.
Gill et al., 2026 (single case report)
A burst, inflamed sebaceous cyst on the back came out by itself during dressing, healed in about 10 days, and did not recur over 1 year of follow-up.
Points to note when reading the figures
Most are single-center retrospective studies, so the results are hard to generalize as they are. Recurrence in inflamed cysts tended to be lower in Mehrabi et al. but was higher in Wang et al., so it differs between studies. The sources we checked do not give how often a sebaceous cyst left alone becomes inflamed, or a general recurrence rate for lipomas.
How should a lump I've been watching change before I see a doctor again?
A check is needed when it grows, when pain, redness or warmth develops, or when it feels hard and fixed or inflammation keeps returning. Even for a lump you decided to watch, whether to remove it is reconsidered if these changes appear.
Size
The lump keeps getting bigger
Inflammation
Pain, redness or warmth develops, or inflammation keeps returning in the same spot
Feel
It feels hard or fixed when touched
Daily discomfort
It causes discomfort in daily life
Felt again after removal
A lump is felt again where it was removed; in a study, more than half of recurrences appeared within 1 year of removal.
Frequently asked questions
Does a sebaceous cyst go away on its own
It usually does not go away on its own. Even if it shrinks as the inflammation settles or the contents drain, it can come back if the capsule remains, and a cyst wall coming out by itself is rare enough to appear as a case report.
Difference between epidermal cyst and sebaceous cyst
The two names are commonly used for the same lump. Medically, epidermal cyst is the correct name; because the sac is filled mainly with keratin (dead skin cells), the name sebaceous cyst is described as inaccurate.
Does a painful lipoma need to be removed
An ordinary lipoma is not painful, so if pain develops, the cause is checked in clinic first. If the lipoma grows and presses on surrounding tissue causing discomfort, or makes daily life uncomfortable, surgery to remove the whole lesion is considered.
About the clinic behind this article
Myongji Best Plastic Surgery Clinic is a board-certified plastic surgery clinic in Myeongji-dong, Gangseo-gu, Busan. Dr. Hyungseok Noh, board-certified plastic surgeon and medical director, provides care.
- Address
- Units 302–305, Building 1, 3 Myeongji-gukje 2-ro 28beon-gil, Gangseo-gu, Busan
- Main Line
- 051-711-7991
- Clinic Hours
- Weekdays AM 10:00 ~ PM 07:30Saturday AM 10:00 ~ PM 03:00Sundays & Public Holidays Closed
- Treatment guide
- View the Epidermal Cyst and Lipoma page
- Booking
- Naver Booking
REFERENCES
References
This article uses the clinic’s published information together with authoritative medical sources.
- Myongji Best Plastic Surgery ClinicEpidermal Cyst and Lipoma guide: precautions before treatment
Supports: Why not to squeeze it yourself, recurrence if the capsule remains, excision of the whole lesion for lipomas, and difficulty telling them apart by sight and touch alone
Forcing it out by hand can make secondary infection or inflammation worse. An epidermal cyst can recur if the capsule is left, and a lipoma must be removed as the whole lesion.
- Myongji Best Plastic Surgery ClinicEpidermal Cyst and Lipoma guide: surgery information and FAQ
Supports: Local anesthesia, operation time per lesion, same-day return to daily life, standard recovery of about 2 weeks, 1-2 visits, removal process, discomfort as a lipoma grows, and changes that need a check
The procedure is performed under local anesthesia and takes about 15 minutes per lesion. If the lump is large or in several places, the surgical plan is adjusted after the consultation.
- Myongji Best Plastic Surgery ClinicNon-covered fee information
Supports: No separate price for epidermal cyst or lipoma removal in the surgery items of the published non-covered fee list (checked November 2, 2026)
Buried suture KRW 1.1 million, medial epicanthoplasty KRW 440,000, lateral canthoplasty KRW 440,000, upper blepharoplasty KRW 1.5 million, lower blepharoplasty KRW 1.8 million, fat repositioning KRW 1.2 million
- NHSSkin cyst
Supports: Skin cysts causing no problems need no treatment, treatment of infected or large painful cysts, and why not to squeeze them
Skin cysts do not need to be treated if they're not causing any problems.
- NHSLipoma
Supports: Lipomas are usually harmless and do not have to be removed; removal when they grow or cause symptoms
Lipomas are harmless and do not usually need to be removed.
- PubMedEpidermal Inclusion Cyst
Weir CB, Sathe NC, St.Hilaire NJ. Epidermal Inclusion Cyst. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2026 Jan-. PMID: 30335343
Supports: Natural course of epidermal cysts (staying the same, slow growth, keratin discharge, rupture), rupture not necessarily meaning infection, and why the name sebaceous cyst is inaccurate
A stable cyst may remain unchanged for years, enlarge gradually, intermittently drain malodorous keratin through the punctum, or rupture into the dermis, causing abrupt tenderness, erythema, and swelling.
- PubMedLipoma
Kolb L, Robson O, Sathe NC. Lipoma. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2026 Jan-. PMID: 29939683
Supports: Natural course of lipomas (slow growth, then stability), causes of pain, and re-evaluation of lumps that grow quickly or are fixed
The natural history of a conventional lipoma typically involves years of slow, indolent enlargement followed by a period of stability.
- PubMedMicrobiological and clinical outcomes of single-stage minimal excision of inflamed epidermal cysts without routine antibiotic treatments: A dual-center retrospective cohort study
Gwak H, Lim ST, Kim SH. Medicine (Baltimore). 2026;105(19):e48589. doi:10.1097/MD.0000000000048589. PMID: 42116321
Supports: Retrospective cohort of 444 epidermal cysts: bacterial culture results of inflamed cysts and complications of immediate excision
The overall complication rate was 2.5%, with no significant difference between the groups (3.1% vs 1.3%, P = .332).
- PubMedSpontaneous Expulsion of a Sebaceous Cyst: A Case Report of a Rare Surgical Outcome
Gill MS, Cheema P. Cureus. 2026;18(2):e104116. doi:10.7759/cureus.104116. PMID: 41890495
Supports: A rare single case in which the wall of a burst sebaceous cyst came out by itself, with 1-year follow-up
However, there was spontaneous expulsion of the cyst while dressing the lesion.
- MedlinePlusEpidermoid cyst
Supports: Why calling an epidermal cyst a sebaceous cyst is inaccurate, usual treatment when inflamed or infected (steroid injection, drainage or surgery, antibiotics), and recurrence if not completely removed
Sometimes, epidermoid cysts are called sebaceous cysts. This is not correct because the contents of the two types of cysts are different.
- PubMedOne-stage excision of inflamed sebaceous cyst versus the conventional method
Jun GB, Qi H, Golap C. S Afr J Surg. 2010;48(4):116-118. PMID: 21542400
Supports: 351 patients with inflamed sebaceous cysts: the conventional two-stage method (antibiotics and incision and drainage, then excision 1-2 months later) compared with immediate excision
A further 185 patients underwent conventional treatment consisting of initial antibiotic administration and incision and drainage of the lesion, followed by elective surgical excision 1-2 months later when the inflammation had subsided.
- PubMedRemoval of keratinous and pilar cysts with the punch incision technique: analysis of surgical outcomes
Mehrabi D, Leonhardt JM, Brodell RT. Dermatol Surg. 2002;28(8):673-677. doi:10.1046/j.1524-4725.2002.02020.x. PMID: 12174056
Supports: Recurrence rates of cysts removed by punch incision (3.6% in charts, 8.3% by survey), recurrence by site, and timing of recurrence
Preliminary chart review revealed a recurrence rate of 3.6%, with a mean time to patient-initiated follow-up of 79.3 weeks.
- PubMedCO2 Laser Punch-Assisted Minimally Invasive Surgery for Sebaceous Cysts
Wang ZC, Zhao WY, Fang QQ, Wu LH, Tan WQ. Lasers Surg Med. 2020;52(8):743-746. doi:10.1002/lsm.23216. PMID: 31943261
Supports: Recurrence after removal of 33 sebaceous cysts and differences by infection status
Only two of the 33 cysts (6.0%) recurred 2 and 3 months postoperatively, including 0 of 21 uninfected cysts (0.0%) and 2 of 12 infected cysts (16.7%).
- PubMedIs it Necessary to Send Clinically Diagnosed Benign Skin and Subcutaneous Lesions Excised Under Local Anesthesia for Routine Histopathological Examination?
Milton CJ, Ganesamoorthy K, Gs D, et al. Cureus. 2021;13(8):e17194. doi:10.7759/cureus.17194. PMID: 34540422
Supports: 1,815 benign skin and subcutaneous lesions: clinical diagnostic accuracy for lipomas and sebaceous cysts, frequency of malignancy, and views on routine histopathology
The clinical accuracy in the diagnosis of lipoma was 88.6%, and for sebaceous cyst, it was 72.7%.
- PubMedMinimal One-Quarter Incision and Four-Step (MOQIF) Excision Method for Subcutaneous Lipoma
Oh SY, Eun S. J Clin Med. 2026;15(6):2448. doi:10.3390/jcm15062448. PMID: 41899370
Supports: Recurrence and complications over a mean 8.9-month follow-up after lipoma removal in 82 patients
Complications were low: seroma 10.98% (16.7% vs. 9.4%, p = 0.404), hematoma 7.3% (11.1% vs. 6.3%, p = 0.608), with no infections, nerve injuries, or recurrences at a mean 8.9-month follow-up.
- PubMedLipoma excision
Salam GA. Am Fam Physician. 2002;65(5):901-904. PMID: 11898962
Supports: Age at which lipomas first appear and association with rare hereditary conditions
Lipomas have been identified in all age groups but usually first appear between 40 and 60 years of age.
- PubMedLipomas are associated with a higher prevalence of metabolic syndrome components: a multicenter cross-sectional study
Berger O, Menashe S, Damti Geva S, et al. Front Endocrinol (Lausanne). 2025;16:1721570. doi:10.3389/fendo.2025.1721570. PMID: 41409612
Supports: Prevalence of obesity, dyslipidemia, hypertension and type 2 diabetes in 7,868 adults with lipomas (cross-sectional study, association)
Compared with population benchmarks, lipoma patients showed consistently higher prevalence of all four metabolic traits.
Published 2026.11.03Last updated 2026.11.03