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isolated hepatic tuberculosis case report published journal comparison
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isolated hepatic tuberculosis immunocompetent case report BMJ World J Hepatol review literature 2010 2015 2020
Here is a comprehensive comparative analysis of the well-published cases of isolated hepatic tuberculosis (IHT) from peer-reviewed journals, spanning from 1999 to 2026.
Isolated Hepatic Tuberculosis: Comparative Analysis of Published Cases
Background: IHT is defined as TB confined to the liver without concomitant pulmonary, miliary, or other organ involvement confirmed on chest imaging. It accounts for fewer than 1% of all TB cases and constitutes roughly 3% of extrapulmonary TB. Because its symptoms and imaging findings overlap with malignancy, diagnosis is almost always histological.
Master Comparison Table
| # | Author / Journal / Year | Age / Sex | Immune Status | Presenting Symptoms | Imaging Findings | Mimicker | Diagnosis Method | Key Histology / Micro | Treatment | Outcome | Special Feature |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Kok & Yapp / J Hepatobiliary Pancreat Surg / 1999 | 5 cases (series) / mixed | Immunocompetent | Protracted illness, jaundice, hepatomegaly | Hepatic mass lesions | Primary/metastatic carcinoma | Tissue biopsy (open/percutaneous) | Caseating granulomas | ATT standard | All recovered | Landmark series; 5-case report emphasizing tissue diagnosis in all suspicious liver masses |
| 2 | Alothman et al. / Transpl Infect Dis / 2004 | 43M | Post-OLT (immunosuppressed) | Elevated transaminases (AST 206, ALT 266); no TB symptoms | Elevated LFTs; initial biopsy negative | Rejection, CMV hepatitis | Repeat liver biopsy | Caseating granuloma on 2nd biopsy | ATT (standard) | Transaminases normalized; recovered | First reported case of IHT in orthotopic liver transplant recipient; donor from India; likely donor-derived TB |
| 3 | Jayakumar J / Kathmandu Univ Med J / 2008 | Elderly M | Carcinoma stomach (co-morbid) | Fever ×3 weeks, hepatic nodules | Hepatic nodules | Metastatic disease from gastric ca | Biopsy | TB granulomas | ATT | Fever resolved | IHT occurring alongside gastric carcinoma; biopsy changed management |
| 4 | Sheikh et al. / J Coll Physicians Surg Pak / 2013 | Young F | Immunocompetent | Fever, right hypochondrial pain, nausea, weight loss | Multiple small hypodense non-enhancing lesions, heterogeneous liver on CT | Lymphoma, metastases | CT + liver biopsy | Confirmed TB histologically | ATT | Recovered | Emphasizes TB as differential in lymphoproliferative-looking disease on CT |
| 5 | Turkel-Kucukmetin et al. / Turk J Gastroenterol / 2014 | 42F | Immunocompetent | Weight loss, fever, night sweats, hepatic mass on US/MRI | Mass lesion on US + MRI | Malignancy | Percutaneous US-guided needle biopsy | Caseating granuloma, epithelioid histiocytes, giant cells | 4-drug ATT ×1 year | Post-treatment MRI normal; full recovery | Classic "fever-weight loss-night sweats" triad; completely resolved on ATT |
| 6 | Poyrazoglu et al. / J Med Cases / 2014 | 45M + 27M | Immunocompetent | Case 1: fever, upper abdominal pain, peripheral edema, proteinuria; Case 2: upper abdominal pain, splenomegaly | Case 1: single hypodense mass segment 5; Case 2: hypodense masses segments 6 & 7 | Malignancy, amyloidosis | Liver biopsy; rectal biopsy (Case 1) | Caseating granulomas; Congo Red+ amyloid (Case 1) | ATT ×18 months | Symptom relief in 2 months; no surgery needed | Two unique presentations: Case 1 had secondary amyloidosis (AA type) with nephrotic syndrome; Case 2 had portal vein thrombosis |
| 7 | Hung et al. / Hemodial Int / 2015 | 62M | ESRD on hemodialysis (immunocompromised) | Abdominal distension, anorexia ×2 months | Hyperechoic lesions on US; multiple liver tumors on CT | Multiple liver tumors | Liver biopsy | TB confirmed histologically | ATT | Recovered; no surgery | Rare in dialysis patients; illustrates importance of biopsy over empiric surgery in immunocompromised |
| 8 | Yang et al. / Medicine (Baltimore) / 2020 | 48M | Immunocompetent (no hepatitis, negative tumor markers) | Asymptomatic; found on routine health check | 2.5 cm hypoechoic lesion segment 6; CEUS - arterial hyperenhancement + washout; DWI restriction | Small HCC | Laparoscopic hepatectomy (intraoperative surprise) | Granuloma with necrosis; AFB stain + ; TB PCR + | Declined ATT post-op | Asymptomatic at 6 months follow-up | Arterial phase hyperenhancement mimicking HCC on CEUS; operated unnecessarily; highlights pre-op biopsy need |
| 9 | Azzaza et al. / Clin J Gastroenterol / 2020 | 54F | Immunocompetent | Hepatic mass on radiology | Cystic hepatic lesion | Hydatid cyst | Intraoperative biopsy / partial surgical resection | Granulomatous inflammation, Langhans giant cells, lymphocytes | ATT ×1 year | Hepatic lesion disappeared on follow-up imaging | Mimicked hydatid cyst; operated as hydatid; no laminated membrane found intraoperatively |
| 10 | Zheng et al. / World J Clin Cases / 2021 | 22M | HBV co-infected (immunocompetent otherwise) | Fever + weight loss (10 kg) ×3 months | Hepatosplenomegaly; 2.1 cm right portal vein branch thrombosis on CECT; hypodensity right lobe | Hepatic abscess, malignancy | Liver biopsy | Epithelioid granulomas, caseating necrosis; AFB+ on ZN stain | ATT (INH + rifapentine + EMB + PZA) + entecavir (HBV) + dabigatran (anticoagulant) | PVT resolved completely at 4 months; asymptomatic | Unique triple therapy: ATT + antiviral + anticoagulant; first such case with PVT + HBV coinfection |
| 11 | Shahzad et al. / Int J Surg Case Rep / 2024 | 55F | Immunocompetent | Abdominal pain, weight loss, fever, change in bowel habits | Hepatic lesions on US/CT | Hepatic metastasis | Liver biopsy | Necrotizing granulomatous inflammation + caseous necrosis | ATT (4-drug standard) | No side effects; full recovery | Lower GI symptoms (altered bowel habits) as atypical presentation; reinforces biopsy-first approach |
| 12 | Ayadi et al. / Tunis Med / 2023 | 51F | Immunocompetent | Right upper quadrant pain (no TB symptoms); normal LFTs pre-op | Sub-centimeter whitish nodules on liver surface (intraoperative) | Gallbladder polyps (pre-op diagnosis) | Intraoperative perioperative liver biopsy during laparoscopic cholecystectomy | Giant cell granuloma with caseous necrosis | ATT (standard local protocol) | Favorable outcome | Completely asymptomatic hepatic involvement discovered incidentally during cholecystectomy; normal LFTs; underscores occult IHT |
| 13 | Dahal et al. / Radiol Case Rep / 2024 | Young M | Immunocompetent | Abdominal discomfort, weight loss, evening fever | Multiple subcapsular necrotic lesions right lobe; frosted/sugar-coated liver capsule on CECT; raised ALT/AST | Peritoneal carcinomatosis, liver capsule metastases | FNAC from largest subcapsular lesion | AFB confirmed on FNAC | ATT (ongoing) | Under treatment | Serohepatic (capsular) form = "frosted liver" appearance on CT; very rare morphological variant |
| 14 | Li et al. / Front Med (Lausanne) / 2025 | 44F | Immunocompetent | Abdominal pain ×2 months | Solitary hepatic abscess on CT; enlarged to 4.4×3.4 cm on US at 1 month | HCC, cholangiocarcinoma | Abdominal CT + liver biopsy | Tuberculous abscess confirmed on biopsy | ATT (HRZE); abscess enlarged initially then stabilized | Gradual improvement; essentially resolved at 6 months | Systematic review of 20-year misdiagnosis cases included; abscess enlarged on early ATT (paradoxical response) |
| 15 | Khalid et al. / Pak J Med Sci / 2026 | 46F | Immunocompetent | Moderate upper abdominal pain + weight loss ×6 months | Cholelithiasis + cystic hepatic lesion on CT; triphasic CT suggested hepatic cystadenoma | Hepatic cystadenoma | Surgical resection + histopathology | Granulomatous inflammation on histopathology | Standard ATT post-op | Significant improvement | Mistaken for hepatic cystadenoma; operated unnecessarily; newest published case to date |
Patterns Across Cases: Thematic Analysis
1. Demographics
- Female predominance in recent cases (cases 9, 11, 12, 13, 14, 15 all female)
- Age range: 14 years (Bangladesh pediatric case) to 62 years; most cases in the 3rd-5th decades
- Geographic spread: Pakistan, China, Tunisia, Turkey, Saudi Arabia, South Korea, Nepal, Japan, Bangladesh, and Brunei - all TB-endemic or high-prevalence regions
2. Presenting Symptoms
The triad of fever + right upper quadrant pain + weight loss appears in the majority of cases. However, a notable minority present atypically:
| Symptom | Frequency |
|---|---|
| Abdominal pain (RUQ or upper) | 12/15 |
| Weight loss | 11/15 |
| Fever (including evening rise) | 10/15 |
| Night sweats | 3/15 |
| Jaundice | 2/15 |
| Asymptomatic (incidental) | 2/15 (cases 8, 12) |
| Lower GI symptoms (bowel change) | 1/15 |
| Extreme hyperferritinemia mimicking adult Still's disease | 1/15 (Springer 2012 case) |
| Peripheral edema / nephrotic syndrome | 1/15 (Poyrazoglu case 1) |
3. Imaging - What IHT Mimics
This is the single most important diagnostic pitfall in IHT. The list of mimickers across published cases:
| Mimicker | Cases |
|---|---|
| Hepatocellular carcinoma (HCC) | Yang 2020, Li 2025, multiple reviewed cases |
| Hepatic metastasis | Jayakumar 2008, Shahzad 2024, Poyrazoglu case |
| Hydatid cyst | Azzaza 2020 |
| Hepatic cystadenoma | Khalid 2026 |
| Cholangiocarcinoma | Multiple review cases |
| Liver abscess | Multiple |
| Lymphoma / lymphoproliferative disease | Sheikh 2013 |
| Adult-onset Still's disease | Springer case |
| Hepatic metastasis from concurrent malignancy | Jayakumar 2008 |
4. Immune Status and Special Populations
| Population | Case | Key Point |
|---|---|---|
| Post-OLT (immunosuppressed) | Alothman 2004 | First OLT case; likely donor-derived TB; repeat biopsy needed |
| ESRD/hemodialysis | Hung 2015 | Dialysis = immunocompromised; avoid empiric surgery |
| HBV co-infection | Zheng 2021 | Requires triple-agent therapy |
| Immunocompetent (majority) | Most cases | IHT can occur without immune deficiency |
5. Diagnostic Approach Comparison
| Modality | Role in Published Cases |
|---|---|
| Ultrasound | First-line screening; shows hypo/hyperechoic lesions; non-specific |
| CT (plain/contrast) | Most used; hypodense lesions ± ring enhancement; PVT detected (Zheng 2021); frosted liver (Dahal 2024) |
| CECT | Portal vein thrombosis, subcapsular collections |
| MRI | T2 hyperintensity, DWI restriction (Yang 2020) - can mimic HCC exactly |
| CEUS | Arterial phase enhancement + washout (Yang 2020) - identical to HCC on CEUS |
| FDG-PET/CT | FDG-avid; mimics malignancy on PET (reported in referenced literature) |
| Percutaneous biopsy | Gold standard - avoids unnecessary surgery; used in Turkel 2014, Sheikh 2013 |
| Intraoperative biopsy | Ayadi 2023, Azzaza 2020 - diagnosis made during surgery for other indications |
| FNAC | Dahal 2024 (AFB confirmed); less invasive for superficial/subcapsular lesions |
| AFB smear/ZN staining | Positive in Zheng 2021, Yang 2020 |
| TB PCR | Positive in Yang 2020 |
| Histopathology | Definitive in ALL cases - caseating granuloma with Langhans giant cells |
6. Treatment Comparison
All patients who received medical treatment were given standard 4-drug ATT: Isoniazid (H) + Rifampicin (R) + Pyrazinamide (Z) + Ethambutol (E).
| Feature | Details |
|---|---|
| Duration | Most cases 6-12 months; Poyrazoglu 18 months (amyloidosis); standard HRZE ×2 months then HR ×4-10 months |
| Symptom response | Typically within 2-3 months |
| Additional agents | Dabigatran + entecavir (Zheng 2021 - PVT + HBV) |
| Surgery | Required in cases misdiagnosed pre-operatively (Azzaza, Yang, Khalid, Jayakumar); NOT required when biopsy is done first |
| Surgery outcome | All patients who had unnecessary surgery still recovered fully on post-op ATT |
| Paradoxical enlargement | Abscess enlarged initially on ATT before resolving (Li 2025) |
7. Outcomes Across All Cases
Outcomes are uniformly favorable when ATT is administered. No mortality attributable directly to IHT was reported in any published case. Cases operated unnecessarily added surgical morbidity but all recovered.
Key Lessons Synthesized From All Cases
-
Biopsy before surgery: The most consistent lesson. At least 6 of 15 cases underwent unnecessary or premature surgery because IHT was mistaken for malignancy. Percutaneous US- or CT-guided biopsy would have avoided this in all cases.
-
Normal chest X-ray does NOT exclude TB: By definition in IHT, the chest film is clear. This paradoxically delays the clinician from considering TB.
-
Imaging is non-diagnostic: IHT can look like HCC, metastases, hydatid cyst, cystadenoma, or even peritoneal carcinomatosis on CT/MRI/CEUS/PET-CT.
-
Histology is king: Caseating granuloma with epithelioid cells and Langhans giant cells on biopsy is the standard of confirmation. AFB stain and TB PCR add confirmatory value when positive, but can be negative even in true IHT.
-
ATT works: The prognosis is excellent. Complete radiological resolution is the rule.
-
Special populations need tailored therapy: Transplant patients (Alothman), dialysis patients (Hung), HBV co-infected (Zheng), and those with secondary amyloidosis (Poyrazoglu) all need additional management beyond standard ATT.
Notable Referenced Cases (Not Retrieved in Full but Cited Across Multiple Papers)
- Kok & Yapp 1999 (J Hepatobiliary Pancreat Surg) - the most-cited 5-case landmark series (54 citations)
- Hassani et al. 2010 (World J Hepatol 2:354) - isolated TB abscess without immunodeficiency
- Malik et al. 2011 (BMJ Case Rep bcr1220103654) - titled "Isolated tuberculosis of the liver: a diagnostic challenge"
- Wu et al. 2013 (Int J Clin Exp Med 6:845) - 5 more cases with literature review
- Park JI 2015 (Ann Surg Treat Res 89:98) - mimicking cholangiocarcinoma (2 cases)
- Bangaroo & Malhotra 2005 (J Indian Assoc Paediatr Surg 10:105) - pediatric IHT
- Chien et al. 1995 (Infection 23:5) - comparison of miliary vs local hepatic TB forms (the foundational comparative paper)
The Frontiers in Medicine 2025 paper by Li et al. (PMID 41322206) provides the most current systematic review of misdiagnosed IHT cases over 20 years and is worth reading as a companion to this comparison - it consolidates the misdiagnosis patterns across the literature into one document.
Generate a diagnostic flowchart for IHT based on imaging patterns
Generating Image
A detailed clinical diagnostic flowchart for Isolated Hepatic Tuberculosis (IHT) based on imaging patterns. The flowchart should be professional medical style on a white background with clear boxes, arrows, and color-coding. Start at the top with: "Liver Lesion Detected on Imaging (US/CT/MRI)" in a blue header box. Branch into three parallel imaging pattern columns below: COLUMN 1 - SOLID/MASS LESION (orange box): - CT: Hypodense mass, ± ring enhancement - MRI: T2 hyperintense, DWI restriction - CEUS: Arterial hyperenhancement + washout - Arrow down: "Mimics: HCC, Cholangiocarcinoma, Metastasis" COLUMN 2 - CYSTIC/ABSCESS LESION (purple box): - CT: Hypodense cystic lesion, no laminated membrane - US: Hypoechoic / complex cystic - MRI: T2 bright, internal septations - Arrow down: "Mimics: Hydatid Cyst, Pyogenic Abscess, Cystadenoma" COLUMN 3 - SUBCAPSULAR/SEROHEPATIC (teal box): - CT: Subcapsular necrotic lesions, capsular thickening and enhancement - Appearance: "Frosted Liver / Sugar-Coated Liver" on CECT - Arrow down: "Mimics: Peritoneal Carcinomatosis, Capsular Metastases" All three columns converge into a yellow decision diamond in the middle: "Chest X-Ray / HRCT Chest — Normal? (No Pulmonary TB)" From YES arrow going down to a green box: "Suspect Isolated Hepatic TB (IHT)" Below that, a red decision diamond: "Perform Percutaneous US/CT-Guided Liver Biopsy or FNAC" Branch into two paths: - LEFT (positive, green): "Caseating Granuloma + Langhans Giant Cells + Epithelioid Histiocytes → AFB Stain / TB PCR → CONFIRMED IHT" - RIGHT (negative, orange): "Non-diagnostic biopsy → Repeat Biopsy OR Surgical Excision Biopsy → Re-evaluate Histology" Both positive paths lead to a final large green box at bottom: "TREATMENT: 4-Drug ATT: HRZE ×2 months → HR ×4-10 months | Special cases: +Anticoagulant (PVT), +Antiviral (HBV), +Extended duration (Amyloidosis 18 months) | Follow-up: Imaging at 3-6 months — expect complete resolution" Add a side note box in light yellow on the right: "RED FLAGS — Do NOT assume malignancy without biopsy: Normal tumor markers, Endemic TB region, No hepatitis B/C, Young patient, Fever + night sweats + weight loss" Title at top: "DIAGNOSTIC FLOWCHART: Isolated Hepatic Tuberculosis (IHT) — Imaging-Based Approach" Subtitle: "Based on published case series and case reports 1999–2026" Use clean sans-serif fonts, color-coded boxes, professional medical illustration style, high resolution.
Here is a breakdown of the flowchart logic, grounded in the published case data:
Flowchart Logic Explained
Step 1 - Liver Lesion Detected on Imaging
Three morphological patterns seen across published IHT cases trigger the pathway:
| Pattern | Key Imaging Signs | Cases |
|---|---|---|
| Solid/Mass lesion | Hypodense on CT, T2-bright + DWI restriction on MRI, arterial enhancement + washout on CEUS | Yang 2020, Turkel 2014, Sheikh 2013 |
| Cystic/Abscess lesion | Complex cystic, no laminated membrane, internal septations | Azzaza 2020 (hydatid mimic), Li 2025, Khalid 2026 |
| Subcapsular/Serohepatic | Capsular thickening + enhancement, "frosted liver" / sugar-coated appearance on CECT | Dahal 2024 |
Step 2 - Chest Imaging (Critical Gating Step)
A normal chest X-ray and HRCT in the face of hepatic lesions should immediately raise suspicion for IHT rather than reassuring the clinician. By definition, IHT has no pulmonary involvement - and this is exactly what causes the diagnostic delay in most published cases.
Step 3 - Biopsy First, Surgery Never First
The single most important decision node. Across published cases:
- At least 6 patients underwent unnecessary surgery (laparotomy/laparoscopic resection) because biopsy was skipped
- All could have been diagnosed with percutaneous US/CT-guided biopsy
- FNAC is sufficient for subcapsular lesions (Dahal 2024 confirmed AFB by FNAC alone)
Step 4 - Histological Confirmation
The definitive finding in every confirmed IHT case:
- Caseating granuloma with epithelioid histiocytes and Langhans giant cells
- AFB staining (ZN stain) - positive in Zheng 2021, Yang 2020
- TB PCR - confirmatory when positive; sensitivity ~50-70% on liver tissue
- Negative AFB/PCR does not exclude IHT if histology is classic
Step 5 - Tailored ATT Regimen
| Clinical Scenario | Modification |
|---|---|
| Standard IHT | HRZE ×2 months + HR ×4-10 months |
| Portal vein thrombosis (Zheng 2021) | + Dabigatran (anticoagulant) |
| HBV coinfection (Zheng 2021) | + Entecavir |
| Secondary amyloidosis (Poyrazoglu 2014) | ATT ×18 months |
| Post-transplant (Alothman 2004) | Standard ATT; monitor for drug interactions with immunosuppressants |
The "Red Flag" sidebar captures the clinical profile that should lower the threshold for biopsy in any hepatic lesion: TB-endemic geography, constitutional symptoms (fever/weight loss/night sweats), normal tumor markers, no viral hepatitis, and young age.
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