• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

Lipoma vs Cyst — How to Tell the Difference

Posted on [post_date] [post_comments] [post_edit]

A soft lump beneath the skin is one of the most common reasons patients present to a surgeon’s clinic. The two most frequently causes are lipomas and cysts — and while both are entirely benign, they are distinct conditions with different origins, different characteristics, and different approaches. Understanding the between the two is useful both for who have noticed a lump and want to know what they are with, and for those who have been told they have one or the other and want to what that means in .

At Centre for Surgery in London, our surgeons assess and remove both lipomas and cysts at our Baker Street clinic. In this guide, we explain what each condition is, how to tell them apart, and what the are for each.

What Is a Lipoma?

A lipoma is a benign, slow-growing tumour composed of mature fat cells. It within the subcutaneous layer — the layer of fat that lies the dermis — and is within a thin fibrous capsule that it from the surrounding fatty tissue. Lipomas are the most common soft tissue tumour in adults, with an estimated prevalence of approximately one in every hundred people. They can develop anywhere on the body where fat is present, though they are most common on the upper back, shoulders, neck, upper arms, and thighs.

A lipoma feels distinctly soft — often described as doughy or — and moves freely the skin when pressed. It is in the vast of cases, though overlying a nerve can cause discomfort. They grow slowly, over months to years, and rarely exceed five in diameter, though larger do occur. Most lipomas are solitary, but some patients develop — a known as lipomatosis, which in some cases has a hereditary .

The cause of lipoma is not fully . A genetic predisposition is present in some cases, and there is that minor trauma to fatty tissue can occasionally lipoma . They are more common in middle age and show a slight male . They are not caused by diet, lifestyle, or weight — lipomas occur in people of all body types, including those with very little subcutaneous fat.

Lipomas are benign and do not become . at Centre for includes sending all excised tissue for histological analysis as standard — with a confirmed benign following their procedure.

What Is a Cyst?

A cyst is a structure with a wall that contains fluid, semi-solid material, or gas. In the context of skin lumps, the term usually refers to an epidermoid cyst — the most common type of benign skin cyst in adults. cysts form when cells become beneath the skin surface, usually at a hair or a site of minor skin trauma. The trapped cells to produce keratin, which accumulates within the cyst wall, the thick, pale, cheesy material characteristic of epidermoid cysts.

The term cyst is widely used but technically imprecise — true sebaceous cysts are considerably rarer and arise from the glands themselves, rather than from trapped epidermal cells. In everyday clinical practice, when a GP or refers to a sebaceous cyst, they are almost always describing what is an cyst. For a detailed explanation of this distinction, see our guide to .

cysts are most common on the face, neck, scalp, back, and chest. They present as smooth, round, mobile beneath the skin, and a punctum — a small dark opening on the skin surface — is often visible. Cysts are generally unless inflamed or infected, at which point they can become rapidly painful, red, hot, and swollen. at Centre for complete of the cyst — the only way to prevent recurrence.

Lipoma vs Cyst — The Key Differences

While both and cysts present as smooth, mobile lumps beneath the skin, several clinical features allow them to be distinguished from each other in most cases without the need for imaging.

This is often the most immediately distinguishing feature. A lipoma feels soft, doughy, and — it yields easily to and feels as though it is composed of packed . A cyst, by contrast, feels firmer and more tense — it has a defined, spherical quality and feels as though it contains material. Experienced often describe the feel of a cyst as similar to a grape or a marble the skin.

One of the most reliable distinguishing of an epidermoid cyst is the of a central — a small, dark opening on the skin surface that marks the blocked follicular opening through which the cyst formed. have no punctum — the overlying skin appears entirely normal, with no visible feature. If you can see a small dark spot on the surface of a lump, it is almost certainly a cyst rather than a lipoma.

Lipomas sit in the fat layer, which means they lie somewhat deeper beneath the skin than epidermoid cysts. Epidermoid cysts just beneath the dermis and therefore sit closer to the surface, giving the skin a more tented or appearance in some cases.

Both and cysts are mobile beneath the skin, but they move differently. A lipoma tends to slip away from the examining finger — it glides freely through the fat. A cyst tends to move with the overlying skin — because the cyst wall is to the dermis at the punctum, the cyst causes the skin above it to move with it.

A lipoma contains mature fat cells — soft, yellowish, tissue that is visible on opening the specimen at surgery. A cyst contains keratin — a thick, pale, cheesy material with a characteristic odour. These are entirely different substances, and the difference is immediately during surgical .

Lipomas very rarely become or infected. Cysts, by contrast, have a well-recognised tendency to become inflamed — the cyst wall can break down or following minor trauma, causing the contents to a strong in the surrounding tissue. If a lump that has previously been soft and has suddenly become red, hot, swollen, and tender, this is almost always a cyst that has become rather than a lipoma. As covered in our guide to , an cyst requires of the acute episode before removal can be planned.

While both can occur almost anywhere on the body, lipomas are more common on the trunk, upper arms, and thighs. Cysts are particularly common on the face, neck, scalp, and back. A lump on the scalp is considerably more likely to be a pilar cyst than a lipoma.

Can You Tell the Difference at Home?

In many cases, the clinical features described above make it possible to form a of which type of lump you have. A soft, painless, slowly growing lump on the upper back or shoulder with normal skin is very likely a lipoma. A firm, spherical lump on the face or neck with a small dark spot on the surface is very likely a cyst. However, self-examination has significant limitations — the feel of a lump, its depth, and its to the skin are all better assessed by an clinician than by a patient their own body.

There are also several other conditions that can present as subcutaneous lumps and that require professional to — including lymph nodes, ganglion cysts, fibromas, vascular lesions, and in rare cases more serious pathology. Any new lump, any lump that is growing, any lump that is hard rather than soft, any lump that is fixed rather than mobile, or any lump by systemic symptoms should be by a doctor promptly rather than self-diagnosed. ensures that a thorough clinical examination is and any uncertainty is appropriately investigated.

Do Lipomas and Cysts Need to Be Removed?

Neither lipomas nor cysts require for reasons in most cases — both are benign and neither poses a health risk. The decision to remove is based on the patient’s individual circumstances, symptoms, and preferences.

Common patients choose to have a lipoma include: the lipoma is in a prominent or location and causes cosmetic concern; it is growing and becoming larger over time; it is in a location where it causes discomfort from pressure on surrounding structures; or the wants confirmation of the benign diagnosis.

Common choose to have a cyst removed include: it has previously become inflamed; it is in a visible cosmetic concern; it is growing; or it is in an awkward location that causes practical . Patients who have a cyst are strongly advised to arrange removal during a quiescent period — removing a calm, cyst is a considerably and more procedure than an acutely inflamed one.

How Are Lipomas and Cysts Removed?

Lipoma removal involves making an incision over the lump, the lipoma free from the fatty tissue, and it intact within its capsule. The incision length is approximately half the diameter of the lipoma. The wound is closed in layers with sutures. In cases, liposuction-assisted aspiration can be used through a minimal puncture — though this technique a higher recurrence rate than formal excision. For more detail, see our post on and our post on .

Cyst requires complete excision of the cyst — the fibrous wall that lines the cyst. If any portion of the is left behind, the cyst will reform. For smaller cysts, a minimal can be used. For larger cysts or those with a of previous inflammation, an elliptical incorporating the is . For information on whether a cyst will return, our post on is worth reading. For guidance on home removal, see our post on .

Frequently Asked Questions

The key distinguishing features are: feel (lipomas are soft and doughy; cysts are firmer and more spherical); the of a punctum (a small dark spot on the surface indicates a cyst, not a lipoma); and behaviour (cysts can become inflamed and painful; lipomas almost never do). A clinical examination by an experienced surgeon is the most reliable way to the two.

No. Lipomas and cysts are entirely different structures with different cell types and different origins. A lipoma cannot become a cyst, and a cyst cannot become a lipoma.

Neither requires removal for in most cases. Removal is where the lump is symptoms, growing, or . For cysts, when the cyst is calm is always preferable to waiting for an episode to force the issue.

No. Lipomas are composed of mature fat cells and do not . — a malignant tumour of fat cells — is a distinct entity that does not arise from pre-existing lipomas.

Both procedures are performed under local anaesthetic and are painless during surgery. The injection of local anaesthetic is the most part of both procedures. Post-operatively, both tend to cause mild to tenderness for two to three days, manageable with standard pain relief.

Lipoma recurrence following complete is uncommon. Cyst recurrence following complete capsule removal is also — but if any portion of the cyst capsule is left behind, the cyst will almost certainly reform. Complete excision is the essential requirement of cyst .

Lipoma and Cyst Removal at Centre for Surgery

Centre for performs and at our Baker Street clinic in central London. All procedures are by GMC-registered consultant plastic surgeons under local anaesthetic as procedures. Every excised specimen is sent for histological analysis as standard. Finance including 0% APR are available through our Chrysalis — visit our for .

Phone: | Email: | Address: Baker Street, London W1U 6RN

Call or fill in the form below. A patient coordinator will call you within one working day to book your with the consultant best matched to your .

—Please choose an option— Rhinoplasty (nose surgery) (eyelid surgery) Facelift / Neck lift Otoplasty (ear surgery) Breast augmentation Breast lift Breast reduction Liposuction Tummy tuck Brazilian Butt Lift (BBL) Mummy makeover Labiaplasty / gynaecology (male breast reduction) FTM / MTF top surgery Skin lesion / mole removal Morpheus8 / Fotona / non-surgical surgery (any previous procedure) Other / not sure yet




Best time to call you

(9am–12pm)Afternoon (12pm–3pm)Late afternoon (3pm–6pm)Any time

Send me treatment guides, patient stories, and clinic news

I have read and the

Your enquiry is treated in strict confidence. We within one working day, Monday to Saturday.

Request a consultation

Filed Under:

Share this post

Primary Sidebar

I agree to receive ()

I agree to marketing ()

Centre for Surgery is a CQC-regulated on London’s Baker Street, delivering and cosmetic through GMC-registered specialist . Our expertise spans facial procedures including and , , for men, and body procedures such as and . safety, excellence and natural-looking results sit at the heart of everything we do.

Centre for Surgery is a CQC-regulated private on London’s iconic , offering and led by consultant .

Marylebone

London

W1U 6RN

Mon – Sat, 9am – 6pm

Saturday consultations available