# Epididymal Tuberculosis > Epididymal tuberculosis for NEET-PG Surgery: beaded vas, cold abscess, scrotal sinus, diagnosis versus tumour, NTEP antitubercular therapy and surgery timing. - Canonical URL: https://prepelephant.com/topics/neet-pg/surgery/epididymal-tuberculosis - Exam / course: NEET-PG · Subject: Surgery - Publisher: PrepElephant (https://prepelephant.com) — Prepared and reviewed by the PrepElephant Academic Review Team - First published: 2026-10-02 - Last updated: 2026-10-02 - How to cite: "Epididymal Tuberculosis", PrepElephant, https://prepelephant.com/topics/neet-pg/surgery/epididymal-tuberculosis ## Direct answer The epididymis is the most common site of male genital tuberculosis, usually reached haematogenously or by reflux from a tuberculous prostate, and presents in a young Indian man as a painless or aching, craggy, hard epididymal enlargement — classically starting at the tail — with a thickened, beaded vas deferens, sometimes a cold abscess or a chronic discharging scrotal sinus. Urine examination for acid-fast bacilli, semen culture, Mantoux and GeneXpert on aspirated pus support the diagnosis; ultrasound shows a heterogeneous epididymis with variable testicular involvement. Treatment is standard antitubercular therapy under the national programme; surgery is reserved for abscesses, sinuses, doubt about malignancy, or refractory disease. ## What you must remember - Male genital TB follows renal TB: prostate, epididymis (commonest site), seminal vesicle, vas, testis in descending frequency — epididymal disease with sterile pyuria points to a renal source upstream. - The textbook signs examiners want verbatim: beading of the vas (granulomatous vasitis), craggy hard epididymis, cold abscess, and a scrotal sinus that discharges caseous material. - Epididymal tail involvement first is typical (blood supply enters at the tail), distinguishing it from tumour, which is intratesticular. - Systemic features are often absent; the presentation is chronic and painless or minimally painful, in the second to fourth decades. - Investigations: early-morning urine for AFB on three days, semen culture and PCR, Mantoux, chest radiograph, ultrasound (heterogeneous epididymal mass with increased or decreased vascularity, hydrocele, testicular involvement); aspiration of abscess for AFB, culture and GeneXpert. - Antitubercular therapy per the national programme (NTEP): an intensive phase followed by continuation, with drug-susceptible disease treated for six months in most genitourinary protocols. - Surgery is adjunctive — drainage of abscess, excision of sinus tracts, epididymectomy or orchidectomy for destruction, doubt about malignancy, or failure to respond. - Untreated disease destroys the epididymis and causes obstructive azoospermia — fertility counselling and sperm banking belong in the conversation. ## Separating TB from tumour, step by step A 28-year-old presents with three months of left scrotal discomfort; examination finds a hard, irregular epididymis, a nodular ("beaded") vas, and a small hydrocele; the testis itself feels normal. The reasoning: the mass lives in the epididymis, not the testis — age, chronicity and vas beading all argue tuberculosis, but a tumour of the testis with reactive epididymitis is the differential that must be excluded, because missing one is catastrophic and the other is medical. Ultrasound localises the lesion; intratesticular heterogeneous mass with vascularity triggers tumour markers (AFP, beta-hCG, LDH) and orchidectomy logic, whereas an enlarged heterogeneous epididymis with a normal testis supports inflammation. Then confirm the organism: three early-morning urines for AFB (concomitant renal TB), semen PCR and culture, chest radiograph, Mantoux, HIV testing. A cold abscess is aspirated — never incised like a pyogenic abscess — and the pus goes for AFB, culture and GeneXpert. Antitubercular therapy follows national guidelines, and the mass should soften and shrink over months; failure to regress, expansion of the testicular component, or a sinus that will not heal brings surgical excision, with frozen section if malignancy remains a live question. ## Where students slip Two reflexes cost marks. Incising a cold abscess in the scrotum creates a chronic tubercular sinus — aspiration (and later excision when sealed) is the discipline. And labelling every young painless scrotal lump "tumour until biopsy" without reading the examination clues (epididymal location, beaded vas, tail-first, hydrocele) misses the pattern Indian exams are built around; conversely, treating everything as TB while an embryonal carcinoma grows is the mirror-image error — the scored answer walks the middle: image, localise, confirm organism, involve the testis's markers when in doubt. ## Frequently asked questions ### Which is the most common site of male genital tuberculosis? The epididymis, involved by haematogenous spread or retrograde extension from a tuberculous prostate, with the tail affected first. ### What is beading of the vas deferens? Nodular thickening of the vas from tuberculous vasitis — a classic physical sign of genital tuberculosis at examination. ### How is epididymal tuberculosis investigated? Early-morning urine for AFB, semen culture and PCR, Mantoux and chest radiograph, scrotal ultrasound, and aspiration of any abscess for AFB, culture and GeneXpert. ### When is surgery required in epididymal TB? For cold abscesses needing aspiration or excision, non-healing sinuses, doubt about malignancy, or masses that fail to regress after adequate antitubercular therapy — surgery is adjunctive, not primary. ### Why should a tubercular scrotal abscess not be simply incised? Incision of a cold abscess leads to a chronic discharging sinus; aspiration under cover of antitubercular therapy, with excision of the tract later if needed, is preferred.