Penis Congenital Anomalies

Slide 1 · Penis — Congenital Anomalies

Hypospadias · Epispadias · Phimosis

Dr Abu Suraih Sakhri

MBBS, MD (Pathology)

www.abusuraihsakhri.com

Slide 2 · Learning objectives

Locate the normal urethral meatus and distinguish ventral from dorsal displacement.

Classify hypospadias by meatal location and interpret associated penile findings.

Explain the urinary, reproductive, and infectious consequences of urethral defects.

Differentiate physiologic non-retractability from scar-related pathological phimosis.

Apply a focused clinical assessment to common diagnostic presentations.

Slide 3 · Reference anatomy: Orient the penile surfaces

Dorsal and ventral describe opposite surfaces of the penile shaft.

The normal urethral meatus lies at the tip of the glans.

Prepuce refers to the foreskin; Its ring is distinct from the urethral opening.

Urethral outlet

DORSAL

VENTRAL

Terminal meatus at glans tip

Slide 4 · Three lesions, three anatomical sites

Entity

Anatomical abnormality

Dominant assessment

Hypospadias

Urethral meatus on ventral surface

Position, curvature, urinary stream

Epispadias

Urethral defect on dorsal surface

Exstrophy association, continence

Phimosis

Preputial orifice too narrow for retraction

Physiologic vs scarred ring

Slide 5 · Developmental error and clinical phenotype

Abnormal urethral groove / canal formation

Displaced external urethral opening

Altered urinary function ± associated anomalies

This sequence describes hypospadias/epispadias; Phimosis involves the preputial ring.

Slide 6 · Hypospadias: Anatomical definition

External urethral opening lies on the ventral surface rather than at the glans tip.

The opening may lie near the glans, along the shaft, or proximally.

Anatomical position and associated curvature determine clinical importance.

Ventral meatal placement differentiates it from epispadias.

Slide 7 · Visual recognition: Ventral meatal displacement

Locate the ventral surface before naming the defect.

Describe the actual meatal position rather than simply calling it “hypospadias”.

The schematic exaggerates separation for clarity; It is not an individual case.

Urethral outlet

DORSAL

VENTRAL

Meatus on ventral surface

Slide 8 · Hypospadias: Frequency and interpretation

Approximately 1 affected infant per 300 live male births.

It is substantially more common than epispadias.

Population estimates vary by registry, geography, and case ascertainment.

A population estimate is not an individual risk prediction.

Slide 9 · Hypospadias: Multifactorial associations

Contemporary guidance describes genetic, placental, and environmental contributions.

Family history may be present, but most cases are not explained by one known gene.

Low birth weight or small-for-gestational-age status is associated with risk.

Maternal hypertensive and diabetic disorders have reported associations; Causality is not implied.

Slide 10 · Classify the meatus from distal to proximal

Distal: Glanular / distal penile

Middle: Penile shaft

Proximal: Penoscrotal / scrotal / perineal

An anatomical classification; Severity assessment also includes curvature and tissues.

Slide 11 · Distal hypospadias: Examine function

The ectopic meatus lies on the glans or distal shaft.

Position alone does not establish urinary obstruction or need for repair.

Document the urinary stream, orifice calibre, and penile curvature.

Individualize counselling because untreated distal cases have heterogeneous outcomes.

Slide 12 · Mid-penile hypospadias: Assess the shaft

The meatus opens along the ventral penile shaft.

Describe its location and apparent urethral plate quality.

Examine for an associated ventral bend rather than assuming a straight shaft.

Function and reconstructive complexity cannot be inferred from the meatus alone.

Slide 13 · Proximal hypospadias: Broader anatomical assessment

Meatus may lie near the penoscrotal junction, scrotum, or perineum.

Assess curvature, preputial configuration, phallus size, and testes.

Associated undescended testes increase concern for a broader developmental condition.

A specialist assessment is especially important in severe proximal presentations.

Slide 14 · Why meatal position is not a severity score

Finding

What it reveals

Meatal location

External urethral endpoint

Penile curvature

Mechanical bending and potential function

Glans / urethral plate

Available anatomy for reconstruction

Preputial cover / scrotum

Associated surface and genital anomalies

Slide 15 · Ventral penile curvature: Mechanism and relevance

Curvature may accompany hypospadias; It is not required for the diagnosis.

A ventral bend reflects asymmetric penile tissues or tethering.

More pronounced curvature can impair future penetrative function.

Its degree and cause are assessed during reconstructive planning.

Slide 16 · Ventral curvature: Separate bend from meatal site

The meatus and curvature are two distinct findings.

A distal meatus does not guarantee the absence of curvature.

Curvature matters to both urinary and future sexual function.

TWO FINDINGS — ASSESS SEPARATELY

Ventral bend

Ectopic outlet

Slide 17 · Preputial hood: A useful inspection clue

Many patients have relatively deficient ventral preputial coverage.

Dorsal tissue may form a conspicuous preputial hood.

The hood is supportive morphology, not the defining criterion.

Some variants have a deceptively intact prepuce.

Slide 18 · Why an ectopic meatus alters the urinary stream

Ectopic urethral outlet

Changed exit direction / possible spraying

Voiding difficulty varies by calibre and anatomy

Do not equate every ventral opening with urethral obstruction.

Slide 19 · Meatal narrowing changes the clinical picture

A narrowed external opening can restrict urinary outflow.

Stenotic urethral defects with obstruction and ascending infection risk.

Contemporary evaluation uses symptoms, stream observations, and examination.

Urinary tract infection is a possible consequence, not a universal accompaniment.

Slide 20 · Proximal meatus and reproductive consequences

Urethral outlet near penile base

Ejaculate deposited away from usual distal outlet

Potential difficulty with insemination

A possible fertility consequence; It is not synonymous with inevitable infertility.

Slide 21 · Associated undescended testes

Urethral defects may coexist with impaired testicular descent.

Always record whether both testes are palpable within the scrotum.

A second anomaly changes the scope of diagnostic evaluation.

The finding is especially important with proximal hypospadias.

Slide 22 · When to consider a difference of sex development

Hypospadias with bilaterally undescended testes requires prompt specialist assessment.

Document external genital anatomy carefully and without premature assumptions.

EAU guidance recommends endocrine and genetic evaluation in this setting.

This escalation is not indicated for every otherwise isolated distal defect.

Slide 23 · Newborn examination: Descriptive checklist

Examine

Record explicitly

Urethral meatus

Ventral site, width, shape, stream if observed

Penile shaft

Curvature, size, ventral tissue

Glans and prepuce

Glans shape, urethral plate, hood / coverage

Scrotum and testes

Scrotal configuration, testicular descent

Slide 24 · Imaging is not a reflex test for isolated hypospadias

Diagnosis is primarily based on direct genital inspection.

EAU panel consensus does not recommend routine imaging for hypospadias alone.

Suspected associated abnormalities or atypical clinical findings warrant individualized workup.

Investigations should answer a specific anatomical or functional question.

Slide 25 · The defect is not diagnosed by histology

Hypospadias and epispadias are defined by external urethral anatomy.

Biopsy is not needed for routine identification of a congenital meatal anomaly.

Clinical documentation should identify associated deformities and function.

Histopathology becomes relevant for separate suspected inflammatory or neoplastic lesions.

Slide 26 · Functional objectives of hypospadias repair

Correct clinically significant curvature

Reconstruct an adequate urethral outlet

Preserve voiding, future function, and tissue cover

Surgery is individualized; The operation is not defined solely by “moving the meatus”.

Slide 27 · Surgical decision-making is individualized

A proximally displaced outlet with severe spraying may be functionally significant.

Meatal stenosis and important ventral curvature are additional indications.

Appearance-related considerations should be discussed separately from function.

Counselling includes anticipated benefits, complications, and uncertainty.

Slide 28 · Preserve reconstructive tissue at presentation

Do not perform routine circumcision before assessing a suspected urethral anomaly.

Preputial tissue may be needed for skin cover or urethral reconstruction.

The same precaution applies to epispadias and other congenital penile anomalies.

Refer for pediatric urologic assessment before irreversible local procedures.

Slide 29 · Reconstruction: Conceptual sequence

Characterize meatus and curvature

Straighten shaft where needed

Construct suitable urethra and skin cover

Editable conceptual overview only; Not a procedural surgical technique diagram.

Slide 30 · Timing of repair: Supplementary guidance

EAU guidance commonly places primary hypospadias repair at 6–18 months.

Age is one factor within an individualized reconstructive plan.

Technical selection depends on anatomy, not a universal operation.

Pathological effects but does not specify this timing.

Slide 31 · Complications after reconstruction

Urethrocutaneous fistula creates an abnormal communication and urine leakage.

Meatal stenosis or urethral stricture may impair urinary flow.

Recurrent curvature and glans or wound dehiscence are recognized problems.

Risk differs markedly between distal and complex proximal defects.

Slide 32 · Follow-up extends beyond wound healing

Assess urinary stream and possible obstructive voiding symptoms.

Monitor for fistula, stenosis, recurrent curvature, or repeated operations.

Pubertal and adult concerns include ejaculation, sexual function, and satisfaction.

Late outcomes cannot be inferred from an uncomplicated early postoperative visit.

Slide 33 · Case: Ventral distal meatus

Clinical presentation

At newborn examination, a urethral opening is seen on the ventral distal penile shaft. Both testes are in the scrotum. No major curvature is visible.

Question

What anatomical descriptors and immediate precautions matter?

Slide 34 · Case interpretation: Distal hypospadias

Document the precise meatal site, glans/prepuce, curvature, and urinary stream.

The genital finding is anatomically consistent with distal hypospadias.

Preserve preputial tissue: Avoid routine circumcision before assessment.

No routine renal imaging solely for an otherwise isolated meatal anomaly.

Slide 35 · Epispadias: Anatomical definition

The urethral outlet or plate opens dorsally rather than at the penile tip.

Its dorsal location distinguishes it from ventral hypospadias.

Epispadias is less frequent than hypospadias.

Assess urinary continence and the surrounding pelvic/urinary anatomy.

Slide 36 · Visual recognition: Dorsal urethral defect

The diagram uses a dorsal viewpoint; An opening is placed on the top surface.

Epispadias may involve a dorsal urethral plate rather than only a pinhole meatus.

An isolated-appearing penile defect must prompt consideration of bladder association.

Urethral outlet

DORSAL

VENTRAL

Defect on dorsal surface

Slide 37 · Epispadias has a wider severity spectrum

A limited distal form may present chiefly as an abnormal meatus.

More extensive forms alter the penile shaft and urinary continence.

Associated bladder-neck and pelvic defects can dominate functional outcome.

Describe the observed anatomy rather than assigning severity from a single label.

Slide 38 · Epispadias and the exstrophy spectrum

Dorsal urethral malformation

Consider exstrophy–epispadias association

Assess bladder exposure, outlet and continence

Associated exstrophy is important but is not present in every case of epispadias.

Slide 39 · Bladder exstrophy: Recognize the associated phenotype

Classic exstrophy involves an exposed, everted bladder on the abdominal surface.

The epispadias phenotype may coexist with a short, broad penis and dorsal curvature.

Bladder closure and continence are major specialist management priorities.

This association is contextual, not a separate bladder-anomalies lecture.

Slide 40 · Epispadias: Clinical consequences

Urine may emerge through an abnormal dorsal urethral opening.

Bladder-neck involvement can cause incontinence, beyond local stream deflection.

Complex cases require attention to urinary tract preservation and continence.

Future sexual and reproductive function is part of long-term assessment.

Slide 41 · Hypospadias versus epispadias

Feature

Hypospadias

Epispadias

Ectopic surface

Ventral

Dorsal

Relative occurrence

More common

Less common

Associated structures

Testes, urinary tract

Exstrophy/bladder neck

Key assessment

Meatus, bend, stream

Meatus, bladder, continence

Slide 42 · Epispadias: Focused assessment

Identify the dorsal defect and its proximal extent.

Inspect the lower abdominal wall and bladder region.

Assess urinary continence and evidence of urinary tract involvement.

Early referral to an experienced pediatric reconstructive team is appropriate.

Slide 43 · Reconstruction in complex epispadias

Define penile, bladder, pelvic anatomy

Plan urethral and bladder reconstruction

Follow continence and upper urinary tract

Specialist care may be staged; A meatal repair alone may be insufficient.

Slide 44 · Case: Dorsal meatus and wetness

Clinical presentation

A newborn has a dorsal penile urethral defect and continuous leakage of urine. The lower abdominal wall also appears abnormal.

Question

Which associated malformation must be considered?

Slide 45 · Case interpretation: Evaluate the exstrophy spectrum

Dorsal urethral opening suggests epispadias.

Abnormal lower abdominal wall raises concern for associated bladder exstrophy.

Continence issues may reflect bladder outlet involvement.

This presentation requires specialist assessment, not an isolated meatal diagnosis.

Slide 46 · Phimosis: The structure involved is the prepuce

Phimosis is inability to retract the foreskin over the glans because of a narrow preputial ring.

The urethral meatus is not necessarily displaced.

Both developmental narrowing and inflammation-related scarring.

Clinical assessment must establish whether narrowing is physiological or pathological.

Slide 47 · Phimosis: Two distinct mechanisms

Developmental / physiological

Non-retractile foreskin without a scarred ring

May resolve with normal maturation

Observation often appropriate if asymptomatic

Acquired / pathological

Fibrotic, often whitish constricting ring

Can follow repeated inflammation or trauma

Symptoms or persistent scarring change management

Slide 48 · Physiologic non-retractability is common in childhood

The foreskin may initially remain adherent or narrow as a normal developmental state.

Spontaneous loosening often occurs over childhood.

Absence of pain, infection, or scarring supports conservative observation.

Non-retractability alone does not prove diseased foreskin.

Slide 49 · Preputial adhesions are not a fibrotic ring

Adhesions involve attachment between inner foreskin and glans.

A narrow ring and adhesions can coexist but are not interchangeable.

Accumulated epithelial debris may appear as small subpreputial white nodules.

Asymptomatic adhesions generally separate spontaneously.

Slide 50 · Compare flexible and scarred preputial rings

Physiological narrowing: No obvious cicatricial ring.

Pathological narrowing: Pale, thickened, scar-like constriction.

These are simplified conceptual outlines—not clinical photographs.

PREPUTIAL RING — SCHEMATIC

No visible scar ring

Thickened fibrotic ring

Not a diagnostic clinical image

Slide 51 · From repeated inflammation to scar-related phimosis

Recurrent local inflammation / injury

Healing by fibrosis of preputial ring

Fixed narrowing and impaired retraction

This scar mechanism is emphasized by Robbins; Avoid implying all childhood narrowing is scarred.

Slide 52 · Lichen sclerosus (BXO): A specific pathological cause

Balanitis xerotica obliterans is genital lichen sclerosus.

Chronic inflammatory changes can cause preputial scarring and phimosis.

The meatus or urethra may also become involved.

Histopathology can confirm the diagnosis when excised tissue is assessed.

Slide 53 · Why retention and hygiene matter in scarred phimosis

Fixed narrowing may make cleansing beneath the prepuce difficult.

Secretions and epithelial detritus may accumulate in a poorly accessible space.

Local inflammation can recur and reinforce fibrosis.

These consequences to secondary infection and penile cancer risk.

Slide 54 · Balanoposthitis is a potential consequence

Balanitis affects the glans; Posthitis affects the prepuce.

Their combination presents with inflammation of both surfaces.

Recurrent inflammation can promote a cycle of ring scarring.

Do not diagnose infection solely from physiological smegma or transient mild redness.

Slide 55 · Penile carcinoma association: Interpret cautiously

Chronic phimosis, retained material and inflammation with increased cancer risk.

This does not imply that every uncircumcised person is high risk.

Contemporary guidance does not recommend routine neonatal circumcision solely to prevent cancer.

Persistent adult inflammatory or suspicious lesions require separate assessment.

Slide 56 · Phimosis, adhesions and paraphimosis

Problem

Underlying anatomy

Clinical implication

Phimosis

Constricting preputial ring

Assess scarring and symptoms

Adhesions

Prepuce adherent to glans

Often physiological

Paraphimosis

Retracted foreskin trapped behind glans

Urgent reduction

Slide 57 · Paraphimosis: Different from phimosis

The foreskin has been retracted and cannot be returned over the glans.

The tight ring may cause oedema and impair local perfusion.

This is an acute urological problem requiring prompt management.

Patients should replace the foreskin after any retraction.

Slide 58 · Initial phimosis evaluation

Assess age, symptoms and retractability

Look for fibrotic ring / BXO / infection

Separate observation from active treatment

Urinary ballooning in isolation may be physiological and is not proof of obstruction.

Slide 59 · Topical therapy: Guideline-based, not Robbins text

EAU recommends topical corticosteroids as first-line treatment for symptomatic phimosis.

Application is directed to the narrow ring with gentle—not forced—retraction.

Responses may be less reliable when dense pathological scarring is present.

Treatment choice depends on symptoms, anatomy and clinician assessment.

Slide 60 · When surgery becomes relevant

Recurrent balanoposthitis or therapy-resistant symptomatic narrowing may require surgery.

BXO-associated phimosis is a separate indication for circumcision consideration.

Preputioplasty may preserve foreskin in selected cases.

A coexisting urethral defect changes surgical planning: Avoid simple circumcision.

Slide 61 · Forceful preputial retraction can create disease

Asymptomatic, physiologically narrow foreskin should not be forcibly retracted.

Traumatic retraction can initiate local tears and scarring.

Scarring may convert normal non-retractability into secondary pathological phimosis.

Once retractable, foreskin should be returned to cover the glans.

Slide 62 · Follow-up after treatment: Targeted assessment

Confirm symptom resolution and comfortable foreskin care.

After surgery, evaluate healing and urinary outlet complaints.

Patients with BXO require attention to possible meatal or urethral stenosis.

Follow-up differs between uncomplicated physiologic narrowing and chronic inflammatory disease.

Slide 63 · Case: Preschool foreskin does not retract

Clinical presentation

An asymptomatic preschool child has a non-retractile foreskin. There is no thick white ring, recurrent infection, or urinary complaint.

Question

Is this automatically pathological phimosis requiring circumcision?

Slide 64 · Case interpretation: Likely physiological

Lack of scarring and symptoms supports normal developmental non-retractability.

Provide non-traumatic hygiene guidance; Do not force retraction.

Observation is appropriate unless another concerning finding develops.

Simple ballooning alone would not necessarily prove obstruction.

Slide 65 · Case: Recurrent inflammation and white ring

Clinical presentation

An older child has repeated balanoposthitis and a fixed, pale fibrotic preputial ring. Retraction is painful.

Question

What pathological process should be assessed?

Slide 66 · Case interpretation: Scar-associated phimosis

A fibrotic ring indicates pathological rather than purely physiological narrowing.

Recurrent inflammation may have contributed to progressive scarring.

Evaluate for lichen sclerosus/BXO and possible meatal involvement.

Management and any histopathology depend on the specialist treatment plan.

Slide 67 · Integrated anatomical differential

Observation

Leading consideration

Next clinical question

Ventral ectopic meatus

Hypospadias

Curvature? Testes descended?

Dorsal urethral defect

Epispadias

Exstrophy? Incontinence?

Fixed scarred prepuce

Pathological phimosis

BXO? Recurrent balanitis?

Retracted trapped prepuce

Paraphimosis

Is urgent reduction needed?

Slide 68 · Choose evaluation by the actual finding

Urethral defect: Map meatus, curvature, testes, and associated anatomy.

Preputial narrowing: Distinguish physiological adhesions from scarred ring.

Dorsal defect with incontinence: Assess beyond the penis for exstrophy.

Avoid routine biopsy or blanket imaging without a targeted diagnostic question.

Slide 69 · Errors that change care

Tempting shortcut

Correct interpretation

“Any non-retraction is diseased”

Physiological variation is common

“Meatal site fully grades severity”

Curvature and tissue anatomy matter

“A ventral meatus means obstruction”

Assess calibre and actual function

“Circumcise before referral”

Preserve foreskin with meatal anomalies

Slide 70 · Synthesis: Link anatomy to consequences

Ventral meatus → hypospadias; Describe level and curvature.

Dorsal meatus → epispadias; Investigate bladder/continence association.

Tight foreskin → consider age, physiological development, and fibrosis.

Clinical risks arise from associated anatomy, outlet function, and chronic inflammation.

Slide 71 · Principal references

Robbins, Cotran & Kumar. Pathologic Basis of Disease. 11th edition. Chapter 21, p. 876.

European Association of Urology. Paediatric Urology: Hypospadias (online guideline, chapter 9).

European Association of Urology. Paediatric Urology: Phimosis and other penile skin abnormalities (chapter 3).

University of Florida Department of Urology. Bladder Exstrophy and Epispadias (clinical reference).