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{{Carcinoma of the penis}}
{{Carcinoma of the penis}}


'''Editor(s)-in-Chief:''' [[C. Michael Gibson, M.S., M.D.]] [mailto:charlesmichaelgibson@gmail.com] Phone:617-632-7753; Joel Gelman, M.D. [mailto:jgelman@uci.edu], ''Director of the Center for Reconstructive Urology and Associate Clinical Professor in the Department of Urology at the University of    California,Irvine''
'''Editor(s)-in-Chief:''' [[C. Michael Gibson, M.S., M.D.]] [mailto:charlesmichaelgibson@gmail.com] Phone:617-632-7753; {{Swathi}}


==Overview==
==Overview==
Carcinoma of the penis is a [[malignant]] growth found on the [[skin]] or in the [[tissues]] of the [[penis]]. Carcinoma of the penis may be classified according to cell types into several subtypes: [[squamous cell carcinoma]], [[adenocarcinoma]], [[melanoma]], [[basal cell carcinoma]], [[lymphoma]], and [[sarcoma]]. The [[incidence]] of carcinoma of the penis is approximately 1 per 100,000 men in the United States. On gross pathology, scaly patches or [[nodules]], [[erythematous]], and [[ulceration]] are characteristic findings of carcinoma of the penis. Common risk factors in the development of carcinoma of the penis are [[human papillomavirus]], [[phimosis]], poor [[genital]] hygiene, not being circumcised, weakened [[immune system]], smoking, and treatment for [[psoriasis]]. And it is caused by an infection with [[human papillomavirus]]. The most common symptoms of carcinoma of the penis include non-healing [[lesion]], change in the colour of the [[penis]], redness or [[irritation]] of the penis, [[lump]] or thickening of the [[skin]] on the [[penis]], [[phimosis]], foul-smelling [[discharge]] or [[bleeding]] from the penis or from underneath the [[foreskin]], [[itching]] or burning under the [[foreskin]], [[swelling]] of the penis, [[lump]] in the [[groin]], and [[dysuria]]. [[Biopsy]] is helpful in the diagnosis of carcinoma of the penis. The predominant therapy for carcinoma of the penis is [[surgical resection]]. Adjunctive [[chemotherapy]], [[radiation therapy]], and [[biological therapy]] may be required. [[Prognosis]] is generally good, and the 5-year survival rate of patients with carcinoma of the penis is approximately 67%.
[[Carcinoma]] of the [[penis]] is a [[malignant]] [[growth]] found on the [[skin]] or in the [[tissues]] of the [[penis]]. [[Carcinoma]] of the [[penis]] may be classified according to [[Cell (biology)|cell]] types into several subtypes: [[squamous cell carcinoma]], [[adenocarcinoma]], [[melanoma]], [[basal cell carcinoma]], [[lymphoma]], and [[sarcoma]]. The [[incidence]] of [[carcinoma]] of the [[penis]] is approximately 1 per 100,000 [[men]] in the [[United States]]. On [[gross pathology]], scaly patches or [[nodules]], [[erythematous]], and [[ulceration]] are characteristic findings of [[carcinoma]] of the [[penis]]. Common [[risk factors]] in the [[development]] of [[carcinoma]] of the [[penis]] are [[human papillomavirus]], [[phimosis]], poor [[genital]] [[hygiene]], not being [[circumcised]], weakened [[immune system]], [[smoking]], and treatment for [[psoriasis]]. And it is caused by an [[infection]] with [[human papillomavirus]]. The most common [[symptoms]] of [[carcinoma]] of the [[penis]] include non-healing [[lesion]], change in the colour of the [[penis]], [[redness]] or [[irritation]] of the [[penis]], [[lump]] or thickening of the [[skin]] on the [[penis]], [[phimosis]], foul-smelling [[discharge]] or [[bleeding]] from the [[penis]] or from underneath the [[foreskin]], [[itching]] or burning under the [[foreskin]], [[swelling]] of the [[penis]], [[lump]] in the [[groin]], and [[dysuria]]. [[Biopsy]] is helpful in the [[diagnosis]] of [[carcinoma]] of the [[penis]]. The predominant [[therapy]] for [[carcinoma]] of the [[penis]] is [[surgical resection]]. Adjunctive [[chemotherapy]], [[radiation therapy]], and [[biological therapy]] may be required. [[Prognosis]] is generally good, and the 5-year [[survival rate]] of [[Patient|patients]] with [[carcinoma]] of the [[penis]] is approximately 67%.


==Classification==
==Classification==
Carcinoma of the penis may be classified according to cell types into several subtypes:
[[Carcinoma]] of the [[penis]] may be classified according to [[cell]] types into several subtypes including, [[squamous cell carcinoma]], [[adenocarcinoma]], [[melanoma]], [[basal cell carcinoma]], [[lymphoma]], [[sarcoma]].
*[[Squamous cell carcinoma]]
*[[Adenocarcinoma]]
*[[Melanoma]]
*[[Basal cell carcinoma]]
*[[Lymphoma]]
*[[Sarcoma]].


==Pathophysiology==
==Pathophysiology==
On gross pathology, characteristic findings of carcinoma of the penis include:  
Most types of [[penile cancer]] traditionally begin as small [[Lesion|lesions]], most commonly on the [[glans]] or [[prepuce]].  About 95% of [[penile cancer]]s develop from flat, scale-like [[Cell (biology)|cells]] called [[squamous]] [[Cell (biology)|cells]]. [[squamous cell carcinoma]] ([[Squamous cell carcinoma|SCC]]) can develop anywhere on the [[penis]], but most develop on the [[foreskin]] (in [[Circumcised|uncircumcised]] [[men]]) or the [[glans]]. This type of [[cancer]] is typically [[slow]] [[Growth|growing]]. When found early, it is often curable. On [[gross pathology]], the [[glans]] and the [[foreskin]] are the most common locations to find scaly patches, [[nodules]], [[palpable]] painless [[lump]], [[erythematous]], [[ulceration]], concurrent [[phimosis]] may conceal the [[lesion]], [[Surface area|surface]] of the [[lesion]] may be exophytic, flat, or [[Ulcerated lesion|ulcerated]], [[Chronic (medical)|chronic]] [[Penis|penile]] [[rash]] or subtle [[Burning sensation when urinating|burning sensation]] and [[Swelling|swollen]] [[Inguinal lymph node|inguinal lymph nodes]] as characteristic findings of [[carcinoma]] of [[penis]].  On [[microscopic]] [[histopathological]] analysis, [[keratinization]] and [[Intercellular space|intercellular]] bridges are characteristic findings of [[carcinoma]] of the [[penis]]. [[Penis|Penile]] [[cancer]] arises from [[precursor]] [[Lesion|lesions]], which generally progress from low-grade to high-grade [[Lesion|lesions]].
*Glans and the foreskin are the most common locations
*Scaly patches  
*[[Nodules]]
*Palpable painless lump
*[[Erythematous]]
*[[Ulceration]]  
*Concurrent phimosis may conceal the lesion  
*Surface of the lesion may be exophytic, flat, or ulcerated  
*Chronic penile rash or subtle burning sensation  
*Swollen inguinal lymph nodes  
 
Grossly noted growth patterns may have prognostic implications:
#'''Superficial spreading''': tumors are limited to lamina propria or superficial corpus spongiosum.   
##Usually extend horizontally through multiple anatomical compartments
#'''Vertical growth''': tumors invade deep anatomical levels, surface is non-verruciform and frequently ulcerated
#'''Verruciform''': tumors are exophytic and papillomatous with a cauliflower-like aspect.
##May be limited to surface (verrucous) or invade deep anatomical levels (cuniculatum) 
#'''Mixed patterns''': observed in 10 - 15% of all cases
 
On microscopic histopathological analysis, characteristic findings of carcinoma of the penis include:
*[[keratinization]]  
*intercellular bridges
*Most histologic subtypes resemble those in vulva, anus or buccal mucosa
*48 - 65% are squamous cell carcinoma
*Verruciform tumors are verrucous, warty, papillary or cuniculatum carcinomas
*Basaloid and sarcomatoid carcinomas usually have a vertical growth pattern
 
'''Grading:'''
*'''Grade 1:''' well differentiated cells, almost undistinguishable from normal squamous cells except for the presence of minimal basal / parabasal cell atypia
*'''Grade 2:''' all tumors not fitting into criteria for grade 1 or 3
*'''Grade 3:''' any anaplastic cells


==Epidemiology and Demographics==
==Epidemiology and Demographics==
The [[incidence]] of carcinoma of the penis is approximately 1 per 100,000 males in the United States. The majority of cases are reported in less developed areas. The incidence of carcinoma of the penis increases with age; the diagnostic median age usually is 40 - 70 years, median age 58 years.
The [[incidence]] of [[carcinoma]] of the [[penis]] is approximately 1 per 100,000 [[Male|males]] in the [[United States]]. The majority of cases are reported in less developed [[Area|areas]]. The [[incidence]] of [[Penis|penile]] [[cancer]] increases with [[age]]; the [[diagnostic]] [[median]] [[age]] usually is 40 - 70 [[Year|years]], [[median]] age 58 years. [[Penis|Penile]] [[cancer]] is [[rare]] if [[circumcise|circumcision]] is done at [[birth]], and is more common in cases of late [[Circumcise|circumcision]] (after age 10).  [[Carcinoma]] of the [[penis]] is more prevalent in [[Population|populations]] with lower [[education]] and higher povertyMore commonly seen in Hispanic and African American [[men]]; [[familial]] cases have occasionally been reported.
*Rare if circumcision is done at birth
*More common if late circumcision (after age 10)  
*More prevalent in populations with lower education and higher poverty
*More common in Hispanic and African American men
*Familial cases have occasionally been reported


==Risk Factors==
==Risk Factors==
Common risk factors in the development of carcinoma of the penis include  
Common [[risk factors]] in the [[development]] of [[carcinoma]] of the [[penis]] include [[human papillomavirus]][[phimosis]], poor [[genital]] [[hygiene]], [[Circumcised|uncircumcised]] [[Male|males]], weakened [[immune system]], [[smoking]], and [[psoralen]] [[ultraviolet]] A (PUVA) [[therapy]] treatment for [[psoriasis]].
*[[Human papillomavirus]]
*[[Phimosis]]
*Poor [[genital]] hygiene
*Uncircumcised males
*Weakened [[immune system]]
*Smoking
*PUVA treatment for [[psoriasis]].


==Screening==
==Screening==
According to the the U.S. Preventive Service Task Force (USPSTF), there is insufficient evidence to recommend routine [[screening]] for carcinoma of the penis.
According to the the [[United States|U.S]]. [[Preventive medicine|Preventive]] Service Task Force (USPSTF), there is insufficient [[evidence]] to recommend routine [[screening]] for [[carcinoma]] of the [[penis]].


==Causes==
==Causes==
Carcinoma of the penis is caused by an infection with [[human papillomavirus]].
[[Carcinoma]] of the [[penis]] is caused by an [[infection]] with [[human papillomavirus]].


==Differential Diagnosis==
==Differential Diagnosis==
Carcinoma of the penis must be differentiated from
[[Carcinoma]] of the [[penis]] must be [[Differentiate|differentiated]] from [[condyloma acuminata]], [[Penis|penile]] intraepithelial [[neoplasia]] (PeIN), [[balanitis xerotica obliterans]], Buschke-Lowenstein [[tumour]], [[Bowenoid papulosis]], [[leukoplakia]].
*[[Condyloma acuminata]]
*Penile intraepithelial [[neoplasia]] (PeIN)
*[[Balanitis xerotica obliterans]]
*Buschke-Lowenstein [[tumour]]
*[[Bowenoid papulosis]]
*[[Leukoplakia]].


==Prognosis==
==Prognosis==
[[Prognosis]] of carcinoma of the penis is generally good, and the 5-year survival rate is approximately 67%. The prognosis varies with the stage of [[tumor]]; stages 0–II have the most favorable prognosis.
[[Prognosis]] of [[carcinoma]] of the [[penis]] is generally good, and the 5-year [[survival rate]] is approximately 67%. The [[prognosis]] varies with the [[Cancer staging|stage]] of [[tumor]]; [[Cancer staging|stages]] 0–II have the most favorable [[prognosis]].


==Staging==
==Staging==
Carcinoma of the penis may be classified into several subtypes based on [[TNM system]] and [[UICC]] staging system.
[[Carcinoma]] of the [[penis]] may be [[Classification|classified]] into several subtypes based on [[TNM system]] and [[UICC]] [[Cancer staging|staging]] system.


==History and Symptoms==
==History and Symptoms==
The most common symptoms of carcinoma of the penis include
The most common [[symptoms]] of [[carcinoma]] of the [[penis]] include any non-healing [[lesion]], change in the [[Color|colour]] of the [[penis]], [[redness]], [[irritation]] of the [[penis]], [[lump]], thickening of the [[skin]] on the [[penis]], [[phimosis]], foul-smelling [[discharge]], [[bleeding]] from the [[penis]] or from underneath the [[foreskin]].
*Non-healing [[lesion]]
*Change in the colour of the [[penis]]
*Redness
*[[Irritation]] of the penis
*[[Lump]]  
*Thickening of the [[skin]] on the [[penis]]
*[[Phimosis]]
*Foul-smelling [[discharge]]  
*[[Bleeding]] from the penis or from underneath the [[foreskin]].


==Physical Examination==
==Physical Examination==
Common physical examination findings of carcinoma of the penis include [[weight loss]], [[pallor]], [[inguinal]] [[lymphadenopathy]], non-healing [[ulcer]] on the [[penis]], [[mass]] on the [[penis]], [[phimosis]], [[skin]] [[induration]] on the penis, change in the colour of the [[penis]], [[erythema]] of the penis, foul-smelling [[discharge]] or [[bleeding]] from the penis or from underneath the [[foreskin]], and [[swelling]] of the penis.
Common [[Physical Examination|physical]] [[Physical examination|examination]] findings of [[carcinoma]] of the [[penis]] include [[weight loss]], [[pallor]], [[inguinal]] [[lymphadenopathy]], non-healing [[ulcer]] on the [[penis]], [[mass]] on the [[penis]], [[phimosis]], [[skin]] [[induration]] on the [[penis]], change in the [[Color|colour]] of the [[penis]], [[erythema]] of the penis, foul-smelling [[discharge]], [[bleeding]] from the [[penis]] or from underneath the [[foreskin]], as well as [[swelling]] of the penis.


==Laboratory Tests==
==Laboratory Tests==
Some patients with carcinoma of the penis may have elevated concentration of serum [[calcium]], which is usually suggestive of [[bone metastases]].
Some patients with [[carcinoma]] of the [[penis]] may have elevated [[concentration]] of serum [[calcium]], which is usually suggestive of [[bone metastases]].


==X Ray==
==X Ray==
There are no [[X-ray]] findings associated with carcinoma of the penis. [[X-ray]] may be performed to detect [[metastases]] of penile cancer to [[lungs]] and [[bones]].
There are no [[X-ray]] findings associated with [[carcinoma]] of the [[penis]]. [[X-ray]] may be performed to detect [[metastases]] of [[Penis|penile]] [[cancer]] to [[lungs]] and [[bones]].


==CT==
==CT==
[[CT scan]] may be performed to detect [[metastases]] of carcinoma of the penis to surrounding [[lymph nodes]], [[liver]], [[lungs]], and other [[organs]].
[[CT scan]] may be performed to detect [[metastases]] of [[carcinoma]] of the [[penis]] to surrounding [[lymph nodes]], [[liver]], [[lungs]], and other [[organs]].


==MRI==
==MRI==
MRI may be performed to detect [[metastases]] of carcinoma of the penis to [[brain]], [[spinal cord]], and nearby [[organs]] and [[tissues]].
[[MRI]] may be performed to detect [[metastases]] of [[carcinoma]] of the [[penis]] to [[brain]], [[spinal cord]], and nearby [[organs]] and [[tissues]].


==Ultrasound==
==Ultrasound==
[[Ultrasound]] may be helpful in the diagnosis of the extent of carcinoma of the penis.
[[Ultrasound]] may be helpful in the [[diagnosis]] of the extent of [[carcinoma]] of the [[penis]].


==Other Imaging Findings==
==Other Imaging Findings==
There are no other imaging findings associated with carcinoma of the penis.
There are no other [[imaging]] findings associated with [[carcinoma]] of the [[penis]].


==Other Diagnostic Studies==
==Other Diagnostic Studies==
There are no other diagnostic study findings associated with carcinoma of the penis.
There are no other [[diagnostic]] study findings associated with [[carcinoma]] of the [[penis]].


==Biopsy==
==Biopsy==
[[Biopsy]] is helpful in the diagnosis of carcinoma of the penis.
[[Biopsy]] is helpful in the [[diagnosis]] of [[carcinoma]] of the [[penis]].


==Medical Therapy==
==Medical Therapy==
The predominant therapy for carcinoma of the penis is [[surgical resection]]. Adjunctive [[chemotherapy]], [[radiation therapy]], and [[biological therapy]] may be required.
The predominant [[therapy]] for [[carcinoma]] of the [[penis]] is [[surgical resection]]. Adjunctive [[chemotherapy]], [[radiation therapy]], and [[biological therapy]] may be required.


==Surgery==
==Surgery==
[[Surgery]] is the mainstay of treatment for carcinoma of the penis.
[[Surgery]] is the mainstay of treatment for [[carcinoma]] of the [[penis]].


==Primary Prevention==
==Primary Prevention==
Effective measures for the [[primary prevention]] of carcinoma of the penis include circumcision, good personal hygiene, and safer sexual practices. [[Gardasil]] [[vaccine]] is recommended for men to prevent [[HPV]] infection.
Effective measures for the [[primary prevention]] of [[carcinoma]] of the [[penis]] include [[Circumcise|circumcision]], good personal [[hygiene]], and safer [[sexual]] practices. [[Gardasil]] [[vaccine]] is recommended for [[men]] to [[Prevention|prevent]] [[HPV]] [[infection]].


==Secondary Prevention==
==Secondary Prevention==
There are no secondary preventive measures available for carcinoma of the penis.
There are no [[secondary]] [[Preventive care|preventive]] measures available for [[carcinoma]] of the [[penis]].


==References==
==References==

Latest revision as of 09:09, 3 April 2019

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Editor(s)-in-Chief: C. Michael Gibson, M.S., M.D. [1] Phone:617-632-7753; Swathi Venkatesan, M.B.B.S.[2]

Overview

Carcinoma of the penis is a malignant growth found on the skin or in the tissues of the penis. Carcinoma of the penis may be classified according to cell types into several subtypes: squamous cell carcinoma, adenocarcinoma, melanoma, basal cell carcinoma, lymphoma, and sarcoma. The incidence of carcinoma of the penis is approximately 1 per 100,000 men in the United States. On gross pathology, scaly patches or nodules, erythematous, and ulceration are characteristic findings of carcinoma of the penis. Common risk factors in the development of carcinoma of the penis are human papillomavirus, phimosis, poor genital hygiene, not being circumcised, weakened immune system, smoking, and treatment for psoriasis. And it is caused by an infection with human papillomavirus. The most common symptoms of carcinoma of the penis include non-healing lesion, change in the colour of the penis, redness or irritation of the penis, lump or thickening of the skin on the penis, phimosis, foul-smelling discharge or bleeding from the penis or from underneath the foreskin, itching or burning under the foreskin, swelling of the penis, lump in the groin, and dysuria. Biopsy is helpful in the diagnosis of carcinoma of the penis. The predominant therapy for carcinoma of the penis is surgical resection. Adjunctive chemotherapy, radiation therapy, and biological therapy may be required. Prognosis is generally good, and the 5-year survival rate of patients with carcinoma of the penis is approximately 67%.

Classification

Carcinoma of the penis may be classified according to cell types into several subtypes including, squamous cell carcinoma, adenocarcinoma, melanoma, basal cell carcinoma, lymphoma, sarcoma.

Pathophysiology

Most types of penile cancer traditionally begin as small lesions, most commonly on the glans or prepuce. About 95% of penile cancers develop from flat, scale-like cells called squamous cells. squamous cell carcinoma (SCC) can develop anywhere on the penis, but most develop on the foreskin (in uncircumcised men) or the glans. This type of cancer is typically slow growing. When found early, it is often curable. On gross pathology, the glans and the foreskin are the most common locations to find scaly patches, nodules, palpable painless lump, erythematous, ulceration, concurrent phimosis may conceal the lesion, surface of the lesion may be exophytic, flat, or ulcerated, chronic penile rash or subtle burning sensation and swollen inguinal lymph nodes as characteristic findings of carcinoma of penis. On microscopic histopathological analysis, keratinization and intercellular bridges are characteristic findings of carcinoma of the penis. Penile cancer arises from precursor lesions, which generally progress from low-grade to high-grade lesions.

Epidemiology and Demographics

The incidence of carcinoma of the penis is approximately 1 per 100,000 males in the United States. The majority of cases are reported in less developed areas. The incidence of penile cancer increases with age; the diagnostic median age usually is 40 - 70 years, median age 58 years. Penile cancer is rare if circumcision is done at birth, and is more common in cases of late circumcision (after age 10). Carcinoma of the penis is more prevalent in populations with lower education and higher poverty. More commonly seen in Hispanic and African American men; familial cases have occasionally been reported.

Risk Factors

Common risk factors in the development of carcinoma of the penis include human papillomavirus, phimosis, poor genital hygiene, uncircumcised males, weakened immune system, smoking, and psoralen ultraviolet A (PUVA) therapy treatment for psoriasis.

Screening

According to the the U.S. Preventive Service Task Force (USPSTF), there is insufficient evidence to recommend routine screening for carcinoma of the penis.

Causes

Carcinoma of the penis is caused by an infection with human papillomavirus.

Differential Diagnosis

Carcinoma of the penis must be differentiated from condyloma acuminata, penile intraepithelial neoplasia (PeIN), balanitis xerotica obliterans, Buschke-Lowenstein tumour, Bowenoid papulosis, leukoplakia.

Prognosis

Prognosis of carcinoma of the penis is generally good, and the 5-year survival rate is approximately 67%. The prognosis varies with the stage of tumor; stages 0–II have the most favorable prognosis.

Staging

Carcinoma of the penis may be classified into several subtypes based on TNM system and UICC staging system.

History and Symptoms

The most common symptoms of carcinoma of the penis include any non-healing lesion, change in the colour of the penis, redness, irritation of the penis, lump, thickening of the skin on the penis, phimosis, foul-smelling discharge, bleeding from the penis or from underneath the foreskin.

Physical Examination

Common physical examination findings of carcinoma of the penis include weight loss, pallor, inguinal lymphadenopathy, non-healing ulcer on the penis, mass on the penis, phimosis, skin induration on the penis, change in the colour of the penis, erythema of the penis, foul-smelling discharge, bleeding from the penis or from underneath the foreskin, as well as swelling of the penis.

Laboratory Tests

Some patients with carcinoma of the penis may have elevated concentration of serum calcium, which is usually suggestive of bone metastases.

X Ray

There are no X-ray findings associated with carcinoma of the penis. X-ray may be performed to detect metastases of penile cancer to lungs and bones.

CT

CT scan may be performed to detect metastases of carcinoma of the penis to surrounding lymph nodes, liver, lungs, and other organs.

MRI

MRI may be performed to detect metastases of carcinoma of the penis to brain, spinal cord, and nearby organs and tissues.

Ultrasound

Ultrasound may be helpful in the diagnosis of the extent of carcinoma of the penis.

Other Imaging Findings

There are no other imaging findings associated with carcinoma of the penis.

Other Diagnostic Studies

There are no other diagnostic study findings associated with carcinoma of the penis.

Biopsy

Biopsy is helpful in the diagnosis of carcinoma of the penis.

Medical Therapy

The predominant therapy for carcinoma of the penis is surgical resection. Adjunctive chemotherapy, radiation therapy, and biological therapy may be required.

Surgery

Surgery is the mainstay of treatment for carcinoma of the penis.

Primary Prevention

Effective measures for the primary prevention of carcinoma of the penis include circumcision, good personal hygiene, and safer sexual practices. Gardasil vaccine is recommended for men to prevent HPV infection.

Secondary Prevention

There are no secondary preventive measures available for carcinoma of the penis.

References


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