|Year : 2018 | Volume
| Issue : 1 | Page : 40-42
Radical orchidectomy for isolated tuberculosis of the testis: Call for restrain on surgeon's knife
Ballah Akawu Denue1, Bukar Abba Zarami2, Mohammed Bashir Alkali1
1 Department of Medicine, College of Medical Sciences, University of Maiduguri, Borno State, Nigeria
2 Department of Histopathology, College of Medical Sciences, University of Maiduguri, Borno State, Nigeria
|Date of Web Publication||10-Oct-2018|
Dr. Ballah Akawu Denue
Department of Medicine, College of Medical Sciences, University of Maiduguri, PMB 1069, Borno State
Source of Support: None, Conflict of Interest: None
Isolated testicular tuberculosis (TB) poses a diagnostic challenge even in regions that are known to be endemic for TB. It seldom presents with constitutional symptoms or genitourinary symptoms and can mimic testicular cancer at the initial stages. The dilemma is further compounded by a dearth of facility and expertise for cytohistological diagnosis of cases. The case presented in this report involved a 40-year-old patient that presented with a 7-month history of asymptomatic right testicular swelling with a working diagnosis of testicular cancer for which he had radical orchidectomy. Histology result was consistent with testicular TB. Isolated TB of the testis is a rare form of genitourinary TB, and it can present similar to testicular malignancy. It should be considered as a close differential diagnosis of testicular cancer especially among those residing in TB endemic regions such as Nigeria. Detailed evaluation of testicular lesion is, therefore, necessary to establish a diagnosis and definitive treatment. This could lead to a reduction in the cases of inadvertent orchidectomy as in this case here presented.
Keywords: Orchidectomy, testicular cancer, testicular tuberculosis
|How to cite this article:|
Denue BA, Zarami BA, Alkali MB. Radical orchidectomy for isolated tuberculosis of the testis: Call for restrain on surgeon's knife. Arch Med Surg 2018;3:40-2
|How to cite this URL:|
Denue BA, Zarami BA, Alkali MB. Radical orchidectomy for isolated tuberculosis of the testis: Call for restrain on surgeon's knife. Arch Med Surg [serial online] 2018 [cited 2018 Dec 13];3:40-2. Available from: http://www.archms.org/text.asp?2018/3/1/40/243040
| Introduction|| |
Urogenital tuberculosis (TB) is the second-most common form of extrapulmonary TB, with more than 90% of cases occurring in the developing countries. However, isolated TB of the testis is extremely rare and poses a diagnostic dilemma as it often masquerades as malignant lesion. Testicular involvement is rare among different genital organs, far behind epididymis, seminal vesicle, and prostate. Testis is involved usually from the tubercular infection spreading from the epididymis and rarely through the hematogenous route, isolated testicular involvement accounts for only 1.6% among different genital organ involvement.,, The rare occurrence of isolated TB of the testis therefore poses a diagnostic challenge even in TB endemic regions. The dilemma is further compounded by dearth of cytopathological diagnostic facilities and expertise to make a prompt diagnosis and necessary actions. Unfortunately, secondary and tertiary health facilities in most developing countries are ill-equipped to address this problem. This has resulted in unnecessary surgeries for medical conditions such as TB that can be treated with chemotherapy except if it is complicated.
Against this background, therefore, we present a case of isolated testicular TB due to its rarity, diagnostic dilemma, and call for caution against hasty surgery on testicular swelling in TB endemic regions without a full evaluation.
| Case Report|| |
A 40-year-old male civil servant referred to Infectious Diseases Clinic of University of Maiduguri Teaching Hospital, a tertiary health institution and center of excellence for infectious diseases and immunology, on account of retrospective diagnosis of testicular TB. The patient presented with 7 months' history of painless swelling of the right testis. It slowly increased in size, and he had no other associated genitourinary symptoms. He was managed as a case of testicular cancer for which he had right radical orchidectomy. Chart review of his presurgery records indicates the following; Mantoux test = 13 mm (positive), testicular ultrasound scan showed normally sited testicles within their respective scrotal sac measuring 3.3 cm × 1.8 cm and 3.4 cm × 1.9 cm in their craniocaudal lengths and widths on the right and left, respectively. There were two well circumscribed hypoechoic masses measuring 11 mm × 9 mm and 9 mm × 8 mm in diameter located close to the right pole of the right testicle as shown in scrotal ultrasound print [Figure 1]. Abdominopelvic ultrasound scan was essentially normal. Chest radiograph showed prominence of aortic knuckle, normal cardiothoracic ratio with no evidence of focal lung lesion. Electrolytes urea and creatinine were essentially within normal limits. Liver function test was essentially normal. Full blood count parameters showed hemoglobin concentration of 14.7 g/dl, white blood count of 4.6 × 109/l, neutrophil % (54%), lymphocyte %(44%), and eosinophil %(2%). Platelet count was 238 × 109/l. Erythrocyte sedimentation rate (ESR) was 73 mm/h. Urine microscopy yielded no pus cells or red blood cell casts; it yielded no growth of microorganism. Urine analysis was essentially normal. Histopathological findings of the right testis tissue showed granulomatous lesion within the testis with normal surrounding tissues. The Ziehl–Neelson (ZN) stain shows scanty acid-fast bacilli (AFB) as shown in the photomicrograph [Figure 2]. Repeat postsurgery investigation was essentially the same with the initial result; however, ESR after 4 weeks of surgery was 23 mm/h.
|Figure 1: Scrotal ultrasound scan showing hypoechoic masses within right testis|
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|Figure 2: Photomicrograph showing granulomatous lesion on H and E (a), Ziehl–Neelsen (b) and acid-fast bacilli in the testicular tissue in the patient (c), and control (d)|
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The patient is currently asymptomatic and being monitored for recurrence of TB in the genitourinary system or elsewhere.
| Discussion|| |
Diagnosis of male genital TB is a herculean task especially in resource-limited settings despite the report of genitourinary TB as a common subtype of extrapulmonary TB besides lymph node involvement, in clinical practice. TB is known to affect male genital organs; epididymis, testis, prostate, seminal vesicle, vas deference, scrotal skin, bulbourethral, and penis. Male genital TB may occur in isolation, but most often it may be associated with renal involvement in 60% to 65% of cases, and pulmonary involvement is seen in 34% of cases. Isolated TB of the testis without the involvement of other genital organs or focus elsewhere as in this index case is extremely rare. Testicular TB is usually secondary to retrograde spread from epididymis or other surrounding organs and often presents with genitourinary symptoms and/or infertility. Conversely, isolated and painless testicular TB as in this case can clinically mimic testicular cancer.,,, The possibility of asymptomatic isolated testicular lesion due to TB as in the index case masquerading as early malignant lesion underscore the need for detailed investigation in TB endemic region., This is necessary to avoid radical orchidectomy and its sequel for this potentially treatable infectious disease. Ultrasound-guided Fine-Needle Aspiration Cytology (USG-guided FNAC) is a useful investigation that could assist in differentiating inflammatory from malignant lesion. It could further provide insight in establishing the diagnosis of testicular TB based on the characteristic cytohistologic features; unfortunately, FNAC was not performed before surgery in this patient. FNAC of the testis is a simple, quick, minimally invasive, and painless outpatient procedure that could help in achieving definitive diagnosis of testicular mass. USG-guided FNAC tissue materials of testicular TB on cytohistological examination shows caseous epithelioid granuloma. ZN staining may show the presence of AFB. However, AFB yield from testicular TB is extremely low, especially among immunocompetent males. However, the consistent histological finding is still necessary to confirm the diagnosis of testicular TB.,,
In this patient, the finding on testicular ultrasound scan of two well circumscribed hypoechoic masses measuring 11 mm × 9 mm and 9 mm × 8 mm in diameter located close to the right pole of the right testicle is suggestive of TB rather than cancer of the testis. Epididymis and testicular TB findings on ultrasound scan include: (a) diffusely enlarged, heterogeneously hypoechoic, (b) diffusely enlarged, homogeneously hypoechoic, (c) nodular enlargement heterogeneously hypoechoic, and (d) milliary. Testicular tumors such as seminomas and lymphomas display homogeneous echo-pattern, unlike nonseminomatous tumors that are heterogeneous similar to TB. Furthermore, Color Doppler USG is a valuable investigation to differentiate between testicular TB and testicular torsion, as blood flow within the testis is either reduced or absent, whereas it is increased in those with inflammatory condition such as TB of the testis. However, this patient was counseled as a case of testicular cancer and had radical orchidectomy despite available facilities and expertise for cytohistopathological diagnosis in the hospital to refute or validate the working diagnosis of cancer of the testis. Histological diagnosis of TB of the testis in this patient was established in retrospect from radical orchidectomy tissue specimen. The surgeon that performed the surgery then referred the patient to infectious diseases unit for appropriate management. The need to consider TB among the list of differential diagnosis, thorough investigation of swelling and restrain from invasive procedures such as radical orchidectomy before establishing a definitive diagnosis of tumors in TB endemic region by means of cytohistological procedures prompted us to report this case. The conventional polymerase chain reaction (PCR) has been shown to be very effective in providing rapid diagnosis of TB from sputum, tissue, and some body fluids; unfortunately, it is not readily available in our setting, where it is available it is not usually within the reach of patients due to the high cost of investigation. The use of GeneXpert, a molecular assay recommended by the World Health Organization is valuable in the detection of Mycobacterium tuberculosis from sputum, tissue and some body fluids. It is a fully automated diagnostic molecular test using real-time PCR technology to detect M. tuberculosis and rifampicin resistance mutation in the rpoβ gene. The Xpert assay is a highly rapid, sensitive, and specific in the diagnosis of both pulmonary and extrapulmonary TB such as testicular TB. Urine culture may be of value in establishing the diagnosis of genitourinary TB, but it is limited by its low sensitivity and longer turnaround time of 6–8 weeks. Elevated serum lactate dehydrogenase and human chorionic gonadotrophin are of little value as they are often elevated in both TB of the testis and testicular tumors.
TB remains a major cause of morbidity and mortality in sub-Saharan Africa. Unfortunately, most developing countries including sub-Saharan Africa that has the highest incidence of TB are bedeviled with a complex intricate of poverty, overcrowding, malnutrition, weak health infrastructure, dearth of skilled health workers, and near nonexistence of newer diagnostic facilities for proper evaluation of patients before surgery.
| Conclusion|| |
Patients presenting with isolated testicular swelling should be thoroughly investigated for TB, especially in TB endemic region. This will obviate the need for unnecessary surgery and its possible complications such as damage to surrounding genitourinary organs, subfertility or infertility from radical orchidectomy as in this case. Surgery should be reserved for complicated cases where the desired outcome could not be achieved with medication.
Declaration of patient consent
The authors certify that they have obtained all appropriate patient consent forms. In the form the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.
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Conflicts of interest
There are no conflicts of interest.
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[Figure 1], [Figure 2]