Tuberculous Peripancreatic Lymphadenitis Presenting as Obstructive Jaundice Due to Extrinsic Common Bile Duct Compression: A Case Report.
Tuberculous Peripancreatic Lymphadenitis Presenting as Obstructive Jaundice Due to Extrinsic Common Bile Duct Compression: A Case Report.
Tuberculous lymphadenitis can cause obstructive jaundice through bile duct compression in patients without obvious TB risk factors.
This case demonstrates that extrapulmonary tuberculosis can present as obstructive jaundice through peripancreatic lymph node enlargement, even in patients without obvious TB exposure or immunocompromise. The imaging characteristics of central necrosis with peripheral rim enhancement can help distinguish tuberculous from malignant lymphadenopathy.
Clinicians evaluating obstructive jaundice should consider tuberculous lymphadenitis in the differential diagnosis, particularly in patients from TB-endemic regions, regardless of apparent exposure history. Early recognition can prevent unnecessary procedures and ensure appropriate anti-tuberculous therapy.
| Study Type | Case Report |
| Population | Single 29-year-old male from TB-endemic region |
| Intervention | Diagnostic workup including imaging and endoscopic ultrasound-guided biopsy |
| Comparator | Not applicable |
| Primary Outcome | Diagnosis of tuberculous peripancreatic lymphadenitis causing bile duct obstruction |
| Key Finding | Conglomerated necrotic lymph nodes (44 × 25 mm) caused extrinsic compression of distal common bile duct |
| Journal | Cureus |
| Year | 2024 |
Tuberculous peripancreatic lymphadenitis represents a rare but important cause of obstructive jaundice that requires tissue diagnosis for confirmation. Geographic origin from TB-endemic areas should prompt consideration of this diagnosis even without traditional TB risk factors.
This single case report cannot establish the frequency of this presentation, optimal diagnostic algorithms, or treatment outcomes. The abstract does not provide information about the patient’s response to anti-tuberculous therapy or long-term follow-up.
Case reports inherently have limited generalizability and selection bias toward unusual presentations. The diagnostic workup and imaging interpretation may not be standardized across different healthcare systems, and other causes of lymphadenopathy were not systematically excluded.
Extrapulmonary tuberculosis can manifest as obstructive jaundice through lymph node compression of bile ducts. This case emphasizes the importance of considering geographic epidemiology in diagnostic reasoning, though the rarity of this presentation limits broad clinical application.
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FAQ
Can tuberculosis cause obstructive jaundice without pulmonary involvement?
Yes, extrapulmonary tuberculosis can cause obstructive jaundice through peripancreatic lymph node enlargement that compresses the common bile duct. This case demonstrates that TB lymphadenitis should be considered in the differential diagnosis of obstructive jaundice, particularly in patients from TB-endemic regions.
What imaging features distinguish tuberculous lymphadenopathy from malignant nodes?
Tuberculous lymph nodes typically show central necrosis with peripheral rim enhancement on contrast-enhanced CT, while malignant nodes often have more heterogeneous enhancement patterns. The conglomerated, necrotic appearance with smooth extrinsic compression of the bile duct favors a tuberculous rather than malignant etiology.
Does previous BCG vaccination prevent extrapulmonary tuberculosis?
BCG vaccination provides limited protection against extrapulmonary tuberculosis in adults, as demonstrated by this case of a previously vaccinated patient developing peripancreatic TB lymphadenitis. BCG’s protective efficacy wanes over time and is primarily effective against severe childhood forms of TB.
How is tuberculous peripancreatic lymphadenitis diagnosed?
Diagnosis requires tissue sampling, typically through endoscopic ultrasound-guided fine needle biopsy of the enlarged lymph nodes. Histopathological examination revealing necrotizing granulomatous inflammation confirms the tuberculous etiology and guides appropriate anti-TB treatment.
Should tuberculosis be considered in HIV-negative patients without known TB exposure?
Yes, tuberculosis should remain in the differential diagnosis even in HIV-negative patients without obvious TB risk factors, especially those from endemic regions. This case illustrates that extrapulmonary TB can present with atypical manifestations in immunocompetent individuals with no clear exposure history.
