Buried / trapped penis

Buried penis has been described since the early 20th century as a penis of normal size that lacks an adequate sheath of skin and lies beneath the integument of the abdomen, thigh, or scrotum. The condition is more common in children, often in neonates or obese prepubertal boys, but occurs in adults and in both circumcised and uncircumcised patients. Mild cases may not be recognized until adulthood when fat deposition worsens concealment.

Several classification schemes exist; none is universal. Commonly, authors distinguish concealed (before circumcision), trapped (cicatricial / scarred after circumcision), and buried (often in association with adolescence and obesity). Many congenital pediatric cases improve spontaneously; in untreated adults, the problem may progress as the abdominal pannus enlarges.

Buried penis in its congenital form is a disorder in which a normally sized penis lacks proper skin coverage and is hidden under abdominal, thigh, or scrotal soft tissues. The condition is also called hidden or concealed penis in the literature. Trapped penis refers to an inconspicuous penis secondary to a cicatricial scar, often after overly aggressive circumcision. Webbed penis is characterized by scrotal skin webs at the penoscrotal junction that obscure the penile shaft.

Proposed mechanisms for congenital buried penis include dysgenetic dartos with abnormal proximal attachments and tethering to the dorsal corpora. A prominent prepubic fat pad often contributes, together with abnormal dartos fascia. Secondary buried penis may follow aggressive circumcision with scar (trapped penis), large hernia, or hydrocele. In adults, genital lymphedema (idiopathic, post-surgical, or infectious such as filariasis) may produce a similar appearance.

Adults are often obese and may have prior trauma or surgery. Diabetes mellitus may worsen the process. After massive weight loss, redundant abdominal skin laxity can contribute. Prior operations - for example abdominoplasty with excessive release between Scarpa and dartos fascia, penile-lengthening procedures, or other groin surgery - may also play a role.

Many techniques have been described; choice depends on age, etiology, and skin availability. Recurrence and need for revision are possible.

In children, key steps often include division of dysgenetic dartos bands and fixation of dartos to Buck fascia dorsally in the midline, ventrally over the corpus spongiosum, and proximally along the shaft - with careful avoidance of the urethra and neurovascular bundles.

In adults, defatting of the mons pubis is usually central (excisional lipectomy, liposuction, or both); whether to remove significant prepubic fat in children is debated. Suspensory ligament release is controversial - in many experienced hands it is rarely needed and may compromise erection stability.

With longitudinal skin shortage in trapped penis, local skin plasty may suffice. Severe shortage may require split-thickness or full-thickness skin grafts, often applied in spiral fashion after secure fixation of skin, dartos, and tunica albuginea at the penile base. If the bed is unsuitable for grafting because of scarring, flaps may be considered.

Families should receive a clear discussion of expected function, cosmesis, and psychosocial outcomes. Younger boys with a concealed penis may be teased by peers; those with severe burying may have no visible shaft while standing and may need to sit to void. Individualized counseling and shared decision-making are essential.