Genital tuberculosis

Reading File

Finding Sources

Searching PubMed

"genital tuberculosis" diagnosis treatment

Reading File

Finding Sources

Reading File

Now I have comprehensive content. Let me compile a thorough response on genital tuberculosis.

Genital Tuberculosis

Genital tuberculosis (TB) is a form of extrapulmonary TB caused by Mycobacterium tuberculosis (or rarely M. bovis), affecting the reproductive organs in both males and females. It is particularly prevalent in endemic regions (South Asia, Sub-Saharan Africa) and typically arises by hematogenous spread from a primary pulmonary focus.

Pathogenesis and Routes of Spread

Hematogenous (primary route): bacilli seed genital organs from a pulmonary or other primary focus
Direct extension: from adjacent urinary tract involvement (kidney, bladder)
Lymphatic spread: from urinary TB to adjacent genital structures
Sexual contact: rare, but a man with prostato-vesicular TB can infect a female partner

Active tuberculosis elsewhere in the body is found in less than half of patients with genitourinary TB. - Smith and Tanagho's General Urology, 19th Edition

Male Genital Tuberculosis

Organs Involved (in order of frequency)

Epididymis - most commonly affected
Prostate and seminal vesicles
Vas deferens
Testis - involved late, usually by direct extension

Pathology

Prostate and seminal vesicles: Nodules, areas of induration, necrosis, and calcification on gross examination. Large calcifications in the prostate strongly suggest tuberculosis.
Vas deferens: Fusiform swellings representing tubercles; classically described as "beaded" on palpation.
Epididymis: Enlarged and firm. Usually separate from testis initially. Microscopically shows typical granulomatous changes with tubular degeneration.
Testis: Rarely involved except by direct extension of an epididymal abscess.

Clinical Features of Tuberculous Epididymo-Orchitis

Onset is insidious. The lower pole of the epididymis is involved first, indicating retrograde spread from a tuberculous focus in the seminal vesicles. - Bailey & Love's Short Practice of Surgery, 28th Ed.

Symptoms:

Painless or mildly painful scrotal swelling
Abscess may drain spontaneously through the scrotal wall
A chronic draining scrotal sinus is almost pathognomonic of tuberculous epididymitis
Acute onset mimicking non-specific epididymitis is rare

Signs:

Firm, discrete, uncomfortable swelling of the lower pole of the epididymis
Disease progresses until whole epididymis is firm and craggy behind a normal-feeling testis
Beading of the vas deferens (characteristic, due to subepithelial tubercles)
Seminal vesicles feel indurated and swollen on rectal examination
Lax secondary hydrocele in ~30% of cases
Cold abscess formation in neglected cases, may discharge
Testis may remain uninvolved for years
Contralateral epididymis often becomes diseased
In two-thirds of cases, evidence of concurrent or previous renal tuberculosis

Key consideration: If bilateral epididymal involvement with ductal occlusion occurs, it results in azoospermia and sterility. - Smith & Tanagho's General Urology

Female Genital Tuberculosis

Infections in women are usually carried by the bloodstream. Rarely, they result from sexual contact with an infected male. The incidence of associated urinary and genital infection in women ranges from 1 to 10%.

Organs Involved

Fallopian tubes (most common - >90% of female genital TB)
Endometrium (~50-60%)
Ovaries (~20-30%)
Cervix (rare - tuberculous cervicitis)
Vagina and vulva (granulomatous lesions): rare

Clinical Features

Unlike non-tuberculous salpingitis, genital TB in women:

Often occurs in older women, many of whom are postmenopausal
Presenting symptoms include:
- Abnormal vaginal bleeding
- Pain (including dysmenorrhea)
- Infertility (primary or secondary - a cardinal feature)
- About one-quarter have adnexal masses (usually bilateral)
Harrison's Principles of Internal Medicine, 22nd Ed.

Complications

Asherman syndrome (intrauterine synechiae): In developing countries, genital TB is a common cause. Patients with genital TB and Asherman syndrome have a very poor prognosis for fertility restoration. - Berek & Novak's Gynecology
Tubo-ovarian abscess
Pelvic peritonitis

Diagnosis

Clinical suspicion when:

Chronic cystitis not responding to antibiotics
Sterile pyuria (the hallmark clue)
Gross or microscopic hematuria
Non-tender enlarged epididymis with beaded/thickened vas
Chronic draining scrotal sinus
Induration of prostate/thickening of seminal vesicles in a young man
Infertility (especially with Asherman syndrome in developing countries)
History of tuberculosis elsewhere

Investigations

Investigation	Details
Urine microscopy/culture	"Sterile pyuria" on routine; early morning urine x3 for AFB culture (gold standard for GU TB)
PCR	Rapid detection of M. tuberculosis in urine/semen/tissue
Semen analysis	Azoospermia from bilateral ductal obstruction
Endometrial biopsy	Shows tuberculous granulomas; best specimen for culture in women
Imaging (CXR)	May show old or active pulmonary TB
Ultrasound	Thickened epididymis; adnexal masses
Intravenous urography (IVU)	Renal and ureteral lesions
Cystoscopy	Bladder involvement (tubercles, ulcers)
Hysterosalpingography	Tubal block, beaded or "pipe-stem" tubes
Laparoscopy	Peritubal adhesions, tubercles on peritoneum

Prostatic massage may demonstrate tubercle bacilli in cases of tuberculous epididymo-orchitis. - S. Das, Manual on Clinical Surgery

Treatment

Medical Therapy (First-Line)

Genitourinary TB is extrapulmonary TB. Medical therapy is the primary treatment. The standard regimen:

Intensive phase (2 months): Isoniazid (INH) + Rifampicin + Pyrazinamide + Ethambutol
Continuation phase (4 months): INH + Rifampicin
Total = 6 months standard course (some guidelines recommend 9-12 months for complex GU TB)

Important caveat: Treatment with anti-tuberculous drugs is less effective in genital TB than in urinary TB. If resolution does not occur within 2 months, surgical intervention is advisable. - Bailey & Love's Short Practice of Surgery

Surgical Therapy

Surgery is only an adjunct to medical therapy, considered when medical treatment has failed:

Male:

Epididymectomy or orchiectomy if no resolution within 2 months of medical therapy
When the epididymis is infected with testicular sparing, epididymectomy is preferred
Drainage of seminal vesicle abscess may be needed
A full course of anti-TB chemotherapy must be completed even if no disease is found elsewhere

Female:

Surgical resection reserved for failure of medical treatment
Hysteroscopic lysis of synechiae for Asherman syndrome (though prognosis for fertility is poor with TB etiology)

Relapse Monitoring

GU TB patients relapse at a higher rate (6.3-22%) than pulmonary TB patients, even after 12 months of treatment. This is because the diseased kidney/genital organs can harbor foci of organisms that are difficult to sterilize completely. Viable bacilli have been identified in kidneys even after 9 months of treatment. Pulmonary TB requires 2 years follow-up; GU TB may require up to 10 years of follow-up (average time to relapse: 5.3 years). - Campbell Walsh Wein Urology

MDR-TB and XDR-TB

MDR-TB (resistant to INH + rifampicin): requires >18 months therapy; cure rate 50-60%
XDR-TB (MDR + fluoroquinolone + injectable aminoglycoside resistance): 5-6 drugs for 2+ years; cure rate only 30-50%

Prognosis

Male infertility: Bilateral epididymal disease causes irreversible azoospermia
Female infertility: Very poor prognosis for fertility restoration with TB-associated Asherman syndrome; anti-TB treatment alone rarely restores tubal patency
A 2023 systematic review (PMID 37758670) examined the effects of anti-TB treatment on pregnancy outcomes in infertile women with genital TB - findings suggest limited improvement in fertility outcomes even with treatment, highlighting the poor reproductive prognosis

Key Points Summary

Feature	Male Genital TB	Female Genital TB
Most common site	Epididymis	Fallopian tubes
Route	Hematogenous / retrograde from seminal vesicles	Hematogenous (rarely sexual)
Hallmark sign	Beaded vas + craggy epididymis	Infertility + adnexal mass
Pathognomonic	Chronic draining scrotal sinus	Tuberculous granuloma on endometrial biopsy
Key complication	Sterility (bilateral duct occlusion)	Asherman syndrome, infertility
Diagnosis	Urine/semen AFB culture, PCR	Endometrial biopsy, HSG, laparoscopy
Treatment	Anti-TB drugs x6 months ± epididymectomy	Anti-TB drugs; poor fertility prognosis

This is a shared conversation. Sign in to Orris to start your own chat.