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Free Silicone Injection

Free liquid silicone injected into genital soft tissue can cause permanent local injury and serious systemic complications. The FDA has not approved injectable silicone for cosmetic body enhancement.[1][2]

Recognition and assessment​

Ask about the injected substance, site, amount if known, timing, previous treatment and current symptoms. The material may be uncertain or mixed with other substances. Document the patient's account without assumptions about the setting or motivation.

  • Local problems: persistent nodules or granulomas, pain, induration, discoloration, ulceration, infection and scarring. Migration can extend the affected area beyond the original injection site.[1][3]
  • Acute systemic symptoms: breathlessness, chest pain or new neurologic symptoms after injection warrant emergency assessment, because silicone embolism can cause severe injury or death.[1]
  • Reconstructive assessment: define skin viability, depth and extent of involvement, infection and effects on urinary or sexual function. Imaging can help characterize implanted materials and complications; choose it to answer the clinical question.[4]

Treatment of complications​

Treat acute infection or tissue-threatening complications promptly. Persistent inflammation requires distinction between infection, foreign-body reaction and other pathology; biopsy or microbiological sampling may be appropriate when the diagnosis is uncertain.

For localized symptomatic disease, excision may be feasible. Diffuse infiltration can make complete removal impossible and can leave substantial defects. Excision, debulking, skin grafts or flaps are selected according to the affected tissue and the resulting defect, with staged care when needed.[2][3] For penile paraffinoma, a 2023 systematic review of 152 surgically treated cases found six published approaches: excision with primary closure, bilateral scrotal flaps, two-stage scrotal skin flaps, a preputial-suprapubic advancement flap, and split-thickness or full-thickness skin grafts; the authors favored two-stage scrotal reconstruction based on their own case.[5]

Evidence for medical treatment of silicone granuloma is limited. A 2023 systematic review included 93 studies, of which 89 were case reports or case series. Treatments and outcome definitions were heterogeneous, follow-up varied, and no study examined patient-reported outcomes. Surgical excision alone was the most common treatment (66.2%), and minocycline was the most common systemic monotherapy. After surgical excision, 48% had a complete and 50% a partial response; after minocycline, 20% and 60%. Involve dermatology, infectious diseases or other specialists according to the presentation.[3]

Distinguish the material and indication​

An injection of free silicone oil is different from a manufactured implant. Penile prostheses and cosmetic subcutaneous implants have distinct designs, indications and complications.[4] See the separate Himplant and penile-prosthesis pages.

Counsel respectfully about the possibility of incomplete removal, further procedures and persistent symptoms. Base blood-borne infection testing on the exposure history and ordinary screening indications.

References​

1. US Food and Drug Administration. FDA warns about illegal use of injectable silicone for body contouring and associated health risks. 2017. FDA safety announcement.

2. US Food and Drug Administration. Dermal filler do's and don'ts for wrinkles, lips, and more. FDA consumer guidance.

3. Mustin DE, Barrett DL, Gangal A, White MS, Yeung H. Management of silicone granuloma: a systematic review. JAAD International. 2023;11:41–42. doi:10.1016/j.jdin.2022.12.006.

4. Chung AD, Aswani Y, Tsai LL. Imaging review of male genitourinary devices and augmentations. European Journal of Radiology. 2026;199:112829. doi:10.1016/j.ejrad.2026.112829.

5. Napolitano L, Marino C, Di Giovanni A, et al. "Two-Stage Penile Reconstruction after Paraffin Injection: A Case Report and a Systematic Review of the Literature." J Clin Med. 2023;12(7):2604. doi:10.3390/jcm12072604

See also: Penile Pearls, Fournier's Gangrene, Grafts in GU Reconstruction.