Silicone Injections for Penile Enlargement (Underground Procedures): Risks, Complications & What to Know

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This page covers a dangerous, medically discouraged practice. It is written to inform men who may already be considering this or who have already had it done — not to encourage it. If you or someone you know is experiencing pain, swelling, fever, or deformity after a silicone or other foreign-material injection, seek emergency medical care immediately. Physicians will treat you without judgment regardless of how or where the injection was performed.

Underground procedure · Not a medical treatment · Serious documented harm

Silicone Injections for Penile Enlargement

Silicone injection for penile enlargement is not a legitimate medical procedure — it is an underground practice, typically performed by non-medical personnel outside any clinical setting, using industrial or non-medical-grade material. The documented medical literature on this practice describes severe, sometimes fatal complications. This page explains why, using real published case reports, and points toward legitimate alternatives.

Illustration of a syringe labeled 'silicone filler' injecting a clear gel substance, representing the underground practice of silicone injection

What this actually is

Not a medical procedure

Unlike every other treatment covered on PhallusMD, silicone injection for penile enlargement is not performed by licensed physicians as part of legitimate clinical practice. It is typically carried out by non-medical individuals, often using industrial-grade silicone never intended for injection into the human body, outside any sterile clinical setting.

Medical-grade liquid injectable silicone does have a narrow, tightly controlled role in some soft tissue augmentation settings under physician supervision. That is a completely different practice from the underground penile injections described in the case reports on this page — different material, different setting, different oversight.

The published medical literature on this specific practice consists almost entirely of case reports describing severe complications and the surgical reconstruction required to treat them — not studies of a safe, working procedure.

Why this differs from every filler page on this site

Every other filler or injectable option covered on PhallusMD (HA fillers, biostimulatory fillers, P-Thick, dermal grafts) is performed by licensed physicians using FDA-cleared or well-documented materials in a clinical setting, with published safety data.

Silicone injection for penile enlargement, as documented in the medical literature, involves none of those safeguards — which is directly reflected in the severity of the complications reported.

What the medical literature actually documents

Real, published complications — not hypothetical warnings

These are not worst-case hypotheticals. Every complication below is drawn from a published, peer-reviewed medical case report or case series.

Death — silicone embolization syndrome

A documented fatal case

A published forensic case report describes a 62-year-old man who died after self-injecting liquid silicone into his genitals and chest wall. Autopsy found a severe foreign-body granulomatous reaction and scarring throughout the injected tissue, with additional findings in the lungs consistent with silicone embolization — where injected material travels through the bloodstream to other organs.

Cancer — squamous cell carcinoma

Penile cancer arising from a silicone granuloma

A 2023 case report published in Urology Case Reports documented penile squamous cell carcinoma — a form of penile cancer — originating from a silicone granuloma. Chronic foreign-body inflammation is understood to be a contributing factor in this type of malignancy.

Necrotizing infection — Fournier’s gangrene

Tissue death requiring emergency reconstructive surgery

Case reports describe men developing Fournier’s gangrene — a rapidly progressing, life-threatening necrotizing infection of the genital tissue — following penile injection with foreign materials including silicone and paraffin. Treatment in these cases required emergency surgical excision of affected tissue, skin grafting, and extensive reconstruction.

Other documented complications

The broader pattern in the case literature

Beyond the most severe outcomes above, the published literature documents a consistent pattern of complications across dozens of individual case reports.

Granulomatous foreign-body reaction — the immune system’s chronic inflammatory response to the injected material

Migration of injected material away from the original site, sometimes into the scrotum or abdomen

Penile deformity, hardening, and lumpy or nodular masses that interfere with intercourse

Chronic pain and disfigurement often requiring surgical excision to correct

Sclerosing lipogranuloma — a specific tissue-hardening reaction described in surgical case series

Ulceration and skin breakdown requiring full-thickness skin grafts to reconstruct

Systemic complications including pneumonitis (lung inflammation) reported after silicone embolization

Patients frequently do not disclose a history of silicone injection to later treating physicians, complicating unrelated medical care

If this has already been done

What to do if you’ve already had silicone injected

If you’ve already had silicone or another foreign material injected — whether recently or years ago — the most important thing is getting an honest medical evaluation, regardless of how or where the injection happened.

Seek emergency care immediately if you notice: fever, spreading redness or warmth, increasing pain, drainage or discharge, rapidly worsening swelling, or skin discoloration. These can indicate a serious infection requiring urgent treatment.

Even without acute symptoms, an evaluation by a urologist experienced in treating foreign-material complications is worthwhile — some of the complications described in the literature developed gradually, including cancer arising years after the original injection.

You will not be judged

Physicians who treat these complications understand that men seeking this out were often looking for an affordable option, felt they had no other choice, or didn’t have accurate information about the risks. Being honest with a doctor about what was injected, when, and by whom is essential for correct treatment — and won’t result in judgment.

Legitimate alternatives

What actually exists as a safe, medically supervised option

FeatureSilicone Injection (underground)HA Fillers (legitimate)Dermal Grafts (legitimate)
Performed byNon-medical personnel, typicallyLicensed physiciansLicensed surgeons
MaterialOften industrial-grade, non-medicalFDA-cleared HA productFDA-cleared donor tissue
Reversible?NoYes — hyaluronidaseNo
Published safety dataCase reports of severe harm onlyPublished clinical trial dataLimited but from clinical settings
Documented worst-case outcomesCancer, death, amputation-level tissue lossInfection, granuloma — reversibleInfection, graft failure

Common questions

Frequently asked questions

Is any silicone injection into the penis ever safe? +

The published medical literature does not support silicone injection as a safe penile augmentation method under any circumstances documented so far — even case series using medical-grade silicone in supervised settings reported poor outcomes requiring surgical correction. Researchers who have reviewed this practice have explicitly recommended against its use until (and unless) carefully controlled clinical trials establish otherwise, which has not happened.

Can the silicone be removed if I already had it injected? +

Unlike HA fillers, there is no enzyme that dissolves silicone. Case reports describe removal requiring surgical excision of affected tissue, sometimes including skin grafting and significant reconstruction. This is a complex procedure best performed by a urologist or reconstructive surgeon experienced in these specific complications.

What should I look for that signals a real emergency? +

Fever, spreading redness, warmth, rapidly increasing swelling, severe pain, or any drainage should be treated as a potential emergency — go to an emergency room, don’t wait. Necrotizing infections like Fournier’s gangrene can progress within hours and are life-threatening.

Talk to a real provider

Whether you’re considering girth enhancement or need evaluation after a past procedure, search our directory of vetted physicians — or ask anonymously in the forum first.

This page is for informational and harm-reduction purposes only and does not constitute medical advice. It is not an endorsement of silicone injection under any circumstance. If you are experiencing symptoms of infection or complication, seek emergency medical care immediately regardless of how the injection was performed or by whom. PhallusMD does not provide instructions for performing this or any injection procedure.