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Free Silicone Injection

Free liquid silicone injection is the non-medical, illegal (in most jurisdictions), and highly morbid practice of injecting industrial or medical-grade silicone oil into the penis, scrotum, or other soft tissue for cosmetic augmentation. It is performed in clandestine settings and carries an exceptionally high complication burden.

Why It's in This Reference​

Reconstructive urologists see these patients years after the initial injection with:[1]

  • Chronic granulomas — palpable firm nodules throughout the penile shaft and scrotum; chronic inflammation
  • Silicone migration — spread beyond the injection site into the abdominal wall, pelvis, or regional lymph nodes
  • Skin discoloration, induration, and contracture
  • Recurrent infection and abscess formation
  • Urethral injury and fistula when silicone tracks into the urethra
  • Systemic disease — silicone granuloma syndrome with pulmonary, cardiac, or renal involvement
  • Disfigurement requiring extensive reconstructive excision and skin-grafting

Contrast with Medical Silicone​

Free silicone is liquid silicone oil injected directly into tissue. It is not the same as medical silicone implants (IPP cylinders, malleable prostheses, Himplant, testicular implants), which are cured elastomers in discrete medical devices — those do not migrate or form systemic granulomas under normal conditions.

Management​

Extensive Reconstruction Often Required​

  • Wide local excision of affected tissue — sometimes near-total penile skin and scrotal skin excision
  • Split-thickness or full-thickness skin grafting — penile shaft resurfacing, scrotal reconstruction
  • Gracilis or VRAM flap for large perineal or scrotal defects
  • Urethral reconstruction if the urethra is involved
  • Multi-stage reconstruction is common

Medical Management​

  • Systemic corticosteroids, imiquimod, minocycline, or surgical debulking in severe silicone granuloma syndrome
  • Pulmonology / rheumatology / infectious disease consultation as indicated

Counseling​

Patients presenting with complications of free silicone are often embarrassed, financially strained from prior clandestine procedures, and may have been harmed by predatory injectors. Harm-reduction counseling, ID testing (HIV, hepatitis), and non-judgmental referral to appropriate reconstructive and multidisciplinary care are the starting point.

References​

1. 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

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