Circumcision scar

Circumcision is a procedure that removes the foreskin from the human penis. In the most common form of the operation, the foreskin is extended with forceps, then a circumcision device may be placed, after which the foreskin is excised. Topical or locally injected anesthesia is generally used to reduce pain and physiologic stress. Circumcision is generally electively performed, most commonly done as a form of preventive healthcare, as a religious obligation, or as a cultural practice. It is also an option for cases of phimosis, other pathologies that do not resolve with other treatments, and chronic urinary tract infections (UTIs). The procedure is contraindicated in cases of certain genital structure abnormalities or poor general health.

The procedure is associated with reduced rates of sexually transmitted infections and urinary tract infections. This includes reducing the incidence of cancer-causing forms of human papillomavirus (HPV) and reducing HIV transmission among heterosexual men in high-risk populations by up to 60%; its prophylactic efficacy against HIV transmission in the developed world or among men who have sex with men is debated. Neonatal circumcision decreases the risk of penile cancer. Complication rates increase significantly with age. Bleeding, infection, and the removal of either too much or too little foreskin are the most common acute complications, while meatal stenosis is the most common long-term. There are various cultural, social, and ethical views on circumcision. Major medical organizations hold variant views on the strength of circumcision's prophylactic efficacy in developed countries. Some medical organizations take the position that it carries prophylactic health benefits which outweigh the risks, while other medical organizations generally hold the belief that in these situations its medical benefits are not counterbalanced by risk.

Circumcision is one of the world's most common and oldest medical procedures. Prophylactic usage originated in England during the 1850s and has since spread globally, becoming predominately established as a way to prevent sexually transmitted infections. Beyond use as a prophylactic or treatment option in healthcare, circumcision plays a major role in many of the world's cultures and religions, most prominently Judaism and Islam. Circumcision is among the most important commandments in Judaism and considered obligatory for men. In some African and Eastern Christian denominations male circumcision is an established practice, and require that their male members undergo circumcision. It is widespread in the United States, South Korea, Israel, Muslim-majority countries and most of Africa. It is relatively rare for non-religious reasons in parts of Southern Africa, Latin America, Europe, and most of Asia, as well as nowadays in Australia. The origin of circumcision is not known with certainty, but the oldest documentation comes from ancient Egypt.

Uses

Elective

Approximately half of all circumcisions worldwide are performed for reasons of prophylactic healthcare.

Prophylactic usage in high-risk populations

There is a consensus among the world's major medical organizations and in the academic literature that circumcision is an efficacious intervention for HIV prevention in high-risk populations if carried out by medical professionals under safe conditions.For sources on this, see:
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In 2007, the WHO and the Joint United Nations Programme on HIV/AIDS (UNAIDS) stated that they recommended adolescent and adult circumcision as part of a comprehensive program for prevention of HIV transmission in areas with high endemic rates of HIV, as long as the program includes "informed consent, confidentiality, and absence of coercion" — known as voluntary medical male circumcision, or VMMC. In 2010, this was expanded to routine neonatal circumcision, as long as those undergoing the procedure received assent from their parents. In 2020, the World Health Organization again concluded that male circumcision is an efficacious intervention for HIV prevention and that the promotion of male circumcision is an essential strategy, in addition to other preventive measures, for the prevention of heterosexually acquired HIV infection in men. Eastern and southern Africa had a particularly low prevalence of circumcised males. This region has a disproportionately high HIV infection rate, with a significant number of those infections stemming from heterosexual transmission. As a result, the promotion of prophylactic circumcision has been a priority intervention in that region since the WHO's 2007 recommendations. The International Antiviral Society–USA also suggests circumcision be discussed with men who have insertive anal sex with men, especially in regions where HIV is common. There is evidence that circumcision is associated with a reduced risk of HIV infection for such men, particularly in low-income countries.

The finding that circumcision significantly reduces female-to-male HIV transmission has prompted medical organizations serving communities affected by endemic HIV/AIDS to promote circumcision as a method of controlling the spread of HIV.

Prophylactic usage in developed countries

Major medical organizations hold varying positions on the prophylactic efficacy of the elective circumcision of minors in the context of developed countries. Literature on the matter is polarized, with the cost-benefit analysis being highly dependent on the kinds and frequencies of health problems in the population under discussion and how circumcision affects them.

The World Health Organization (WHO), UNAIDS, and American medical organizations take the position that it carries prophylactic health benefits which outweigh the risks, while European medical organizations generally hold the belief that in these situations its medical benefits are not counterbalanced by risk. Advocates of circumcision consider it to have a net health benefit, and therefore feel that increasing the circumcision rate is "imperative". They recommend performing it during the neonatal period when it is less expensive and has a lower risk of complications. The American Academy of Pediatrics, American College of Obstetricians and Gynecologists, and Centers for Disease Control and Prevention stated that the potential benefits of circumcision outweigh the risks.

The World Health Organization in 2010 stated:

Pathologies

Circumcision is also used to treat various pathologies. These include pathological phimosis, refractory balanoposthitis and chronic or recurrent urinary tract infections (UTIs).

Contraindications

Circumcision is contraindicated in certain cases.

These include infants with certain genital structure abnormalities, such as a misplaced urethral opening (as in hypospadias and epispadias), curvature of the head of the penis (chordee), or ambiguous genitalia, because the foreskin may be needed for reconstructive surgery. Circumcision is contraindicated in premature infants and those who are not clinically stable and in good health.

If an individual is known to have or has a family history of serious bleeding disorders such as hemophilia, it is recommended that the blood be checked for normal coagulation properties before the procedure is attempted.

Technique

The foreskin is the double-layered fold of tissue at the distal end of the human penis that covers the glans and the urinary meatus.

For adult medical circumcision, superficial wound healing takes up to a week, and complete healing 4 to 6 months. For infants, healing is usually complete within one week.Alt URL

Removal of the foreskin

For infant circumcision, devices such as the Gomco clamp, Plastibell and Mogen clamp are commonly used in the USA. These follow the same basic procedure. First, the amount of foreskin to be removed is estimated. The practitioner opens the foreskin via the preputial orifice to reveal the glans underneath and ensures it is normal before bluntly separating the inner lining of the foreskin ( preputial epithelium) from its attachment to the glans. The practitioner then places the circumcision device (this sometimes requires a dorsal slit), which remains until blood flow has stopped. Finally, the foreskin is amputated. For older babies and adults, circumcision is often performed surgically without specialized instruments, and alternatives such as Unicirc or the Shang ring are available.

Pain management

The circumcision procedure causes pain, and for neonates this pain may interfere with mother-infant interaction or cause other behavioral changes, so the use of analgesia is advocated. Ordinary procedural pain may be managed in pharmacological and non-pharmacological ways. Pharmacological methods, such as localized or regional pain-blocking injections and topical analgesic creams, are safe and effective. The ring block and dorsal penile nerve block (DPNB) are the most effective at reducing pain, and the ring block may be more effective than the DPNB. They are more effective than EMLA (eutectic mixture of local anesthetics) cream, which is more effective than a placebo. Topical creams have been found to irritate the skin of low birth weight infants, so penile nerve block techniques are recommended in this group.

For infants, non-pharmacological methods such as the use of a comfortable, padded chair and a sucrose or non-sucrose pacifier are more effective at reducing pain than a placebo, but the American Academy of Pediatrics (AAP) states that such methods are insufficient alone and should be used to supplement more effective techniques. A quicker procedure reduces duration of pain; use of the Mogen clamp was found to result in a shorter procedure time and less pain-induced stress than the use of the Gomco clamp or the Plastibell. The available evidence does not indicate that post-procedure pain management is needed. For adults, topical anesthesia, ring block, dorsal penile nerve block (DPNB) and general anesthesia are all options, and the procedure requires four to six weeks of abstinence from masturbation or intercourse to allow the wound to heal.

Effects

Neonatal circumcision is generally a safe, low-risk procedure when done by an experienced practitioner.

Sexually transmitted infections

Human immunodeficiency virus

Human papillomavirus

Human papillomavirus (HPV) is the most commonly transmitted sexually transmitted infection, affecting both men and women. While most infections are asymptomatic and are cleared by the immune system, some types of the virus cause genital warts, and other types, if untreated, cause various forms of cancer, including cervical cancer and penile cancer. Genital warts and cervical cancer are the two most common problems resulting from HPV.

Circumcision is associated with a reduced prevalence of oncogenic types of HPV infection, meaning that a randomly selected circumcised man is less likely to be found infected with cancer-causing types of HPV than an uncircumcised man. It also decreases the likelihood of multiple infections. , there was no strong evidence that it reduces the rate of new HPV infection, but the procedure is associated with increased clearance of the virus by the body, which can account for the finding of reduced prevalence.

Although genital warts are caused by a type of HPV, there is no statistically significant relationship between being circumcised and the presence of genital warts.

Other infections

Studies evaluating the effect of circumcision on the rates of other sexually transmitted infections have, generally, found it to be protective. A 2006 meta-analysis found that circumcision was associated with lower rates of syphilis, chancroid, and possibly genital herpes. A 2010 review found that circumcision reduced the incidence of HSV-2 (herpes simplex virus, type 2) infections by 28%. The researchers found mixed results for protection against trichomonas vaginalis and chlamydia trachomatis, and no evidence of protection against gonorrhea or syphilis. It may also possibly protect against syphilis in MSM.

Phimosis, balanitis and balanoposthitis

Phimosis is the inability to retract the foreskin over the glans penis. At birth, the foreskin cannot be retracted due to adhesions between the foreskin and glans, and this is considered normal (physiological phimosis). Over time the foreskin naturally separates from the glans, and a majority of boys are able to retract the foreskin by age three. Less than one percent are still having problems at age 18. If the inability to do so becomes problematic (pathological phimosis) circumcision is a treatment option. A preputioplasty, where the foreskin is surgically widened instead of removed, is another possible surgical treatment option for phimosis. This pathological phimosis may be due to scarring from the skin disease balanitis xerotica obliterans (BXO), repeated episodes of balanoposthitis or forced retraction of the foreskin. Steroid creams are also a reasonable option and may prevent the need for surgery including in those with mild BXO. The procedure may also be used to prevent the development of phimosis. Phimosis is also a complication that can result from circumcision.

An inflammation of the glans penis and foreskin is called balanoposthitis, and the condition affecting the glans alone is called balanitis. Most cases of these conditions occur in uncircumcised males, affecting 411% of that group. The moist, warm space underneath the foreskin is thought to facilitate the growth of pathogens, particularly when hygiene is poor. Yeasts, especially ''Candida albicans'', are the most common penile infection and are rarely identified in samples taken from circumcised males. Both conditions are usually treated with topical antibiotics (metronidazole cream) and antifungals (clotrimazole cream) or low-potency steroid creams. Circumcision is a treatment option for refractory or recurrent balanoposthitis, but in the twenty-first century the availability of the other treatments has made it less necessary.

Urinary tract infections

A UTI affects parts of the urinary system including the urethra, bladder, and kidneys. There is about a one percent risk of UTIs in boys under two years of age, and the majority of incidents occur in the first year of life. There is good but not ideal evidence that circumcision of babies reduces the incidence of UTIs in boys under two years of age, and there is fair evidence that the reduction in incidence is by a factor of 310 times (100 circumcisions prevents one UTI). Circumcision is most likely to benefit boys who have a high risk of UTIs due to anatomical defects, and may be used to treat recurrent UTIs.

There is a plausible biological explanation for the reduction in UTI risk after circumcision. The orifice through which urine passes at the tip of the penis (the urinary meatus) hosts more urinary system disease-causing bacteria in uncircumcised boys than in circumcised boys, especially in those under six months of age. As these bacteria are a risk factor for UTIs, circumcision may reduce the risk of UTIs through a decrease in the bacterial population.

Cancers

Not being circumcised is the primary risk factor for penile cancer. Pre-adolescent circumcision has a strong protective effect against penile cancer in later life. Penile cancer is a rare disease in the developed world but much more prevalent in the developing world. The penile tissue removed during circumcision is a potential origin for penile cancer. Risk-benefit considerations around the use of circumcision as a cancer-preventive measure are a source of debate.

Penile cancer development can be detected in the carcinoma ''in situ'' (CIS) cancerous precursor stage and at the more advanced invasive squamous cell carcinoma stage. There is an association between adult circumcision and an increased risk of invasive penile cancer; this is believed to be from men being circumcised as a treatment for penile cancer or a condition that is a precursor to cancer rather than a consequence of circumcision itself. Penile cancer has been observed to be nearly eliminated in populations of males circumcised neonatally.

Important risk factors for penile cancer include phimosis and HPV infection, both of which are mitigated by circumcision. The mitigating effect circumcision has on the risk factor introduced by the possibility of phimosis is secondary, in that the removal of the foreskin eliminates the possibility of phimosis. This can be inferred from study results that show uncircumcised men with no history of phimosis are equally likely to have penile cancer as circumcised men. Circumcision is also associated with a reduced prevalence of cancer-causing types of HPV in men and a reduced risk of cervical cancer (which is caused by a type of HPV) in female partners of men.

There is some evidence that circumcision is associated with reduced risk of prostate cancer.

Women's health

A 2017 systematic review found consistent evidence that male circumcision prior to heterosexual contact was associated with a decreased risk of cervical cancer, cervical dysplasia, HSV-2, chlamydia, and syphilis among women. The evidence was less consistent in regards to the potential association of circumcision with women's risk of HPV and HIV.

Sexual effects

The accumulated data show circumcision does not have an adverse physiological effect on sexual pleasure, function, desire, or fertility.The American Academy of Pediatrics Task Force on Circumcision "Technical Report" (2012) addresses sexual function, sensitivity and satisfaction without qualification by age of circumcision. Sadeghi-Nejad ''et al.'' "Sexually transmitted diseases and sexual function" (2010) addresses adult circumcision and sexual function. Doyle ''et al.'' "The Impact of Male Circumcision on HIV Transmission" (2010) addresses adult circumcision and sexual function. Perera ''et al.'' "Safety and efficacy of nontherapeutic male circumcision: a systematic review" (2010) addresses adult circumcision and sexual function and satisfaction.
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There is some evidence that circumcision has no effect on pain with intercourse, premature ejaculation, intravaginal ejaculation latency time, erectile dysfunction or difficulties with orgasm. There are popular misconceptions that circumcision benefits or adversely impacts the sexual pleasure of the circumcised person.

According to a 2014 review, the effect of circumcision on sexual partners' experiences is unclear as this has not been well studied. According to a policy statement from the Canadian Paediatric Society that was reaffirmed in 2021, "medical studies do not support circumcision as having an impact on sexual function or satisfaction for partners of circumcised individuals".

Adverse effects

The most common acute complications are bleeding, infection and the removal of either too much or too little foreskin. These complications occur in approximately 0.13% of procedures, with bleeding being the most common acute complication in the United States. Minor complications are reported to occur in three percent of procedures. Severe complications are rare. A specific complication rate is difficult to determine due to scant data on complications and inconsistencies in their classification. Complication rates are greater when the procedure is performed by an inexperienced operator, in unsterile conditions, or when the child is at an older age. Significant acute complications happen rarely, occurring in about 1 in 500 newborn procedures in the United States. Severe to catastrophic complications, including death, are so rare that they are reported only as individual case reports. Where a Plastibell device is used, the most common complication is the retention of the device occurring in around 3.5% of procedures. Other possible complications include buried penis, chordee, phimosis, skin bridges, urethral fistulas, and meatal stenosis. These complications may be partly avoided with proper technique, and are often treatable without requiring surgical revision. The most common long-term complication is meatal stenosis, this is almost exclusively seen in circumcised children, it is thought to be caused by ammonia producing bacteria coming into contact with the meatus in circumcised infants. It can be treated by meatotomy.

Effective pain management should be used during the procedure. Inadequate pain relief may carry the risks of heightened pain response for newborns. Newborns that experience pain due to being circumcised have different responses to vaccines given afterwards, with higher pain scores observed. For adult men who have been circumcised, there is a risk that the circumcision scar may be tender. There is no good evidence that circumcision affects cognitive abilities.

History

The word circumcision is from Latin , meaning "to cut around". Circumcision is the oldest known surgical procedure. Depictions of circumcised penises are found in Paleolithic art, predating the earliest signs of trepanation.

The history of the migration and evolution of circumcision is known mainly from the cultures of two regions. In the lands south and east of the Mediterranean, starting with Central Sahara, Sudan and Ethiopia, the procedure was practiced by the ancient Egyptians and the Semites