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This patient complains of cough since one month and there is no sputum comes out clinically correlate the case and diagnose it properly patient is non smoker
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I now have all the data I need. Let me compile the complete clinical correlation and diagnosis.
Clinical Case Analysis: Mr. Baleshwar Yadav, 50 Years / Male, Non-Smoker
SUMMARY OF ALL INVESTIGATIONS
Patient: Baleshwar Yadav | Age: 50 years | Male | Non-Smoker
Chief Complaint: Dry cough for 1 month (no sputum)
INVESTIGATIONS AT A GLANCE
1. HRCT Thorax (03/06/2026) - Global Diagnostic, Varanasi
| Finding | Significance |
|---|---|
| Linear hypodense strands + peribronchial cuffing + pleural thickening in bilateral basal segments | Likely fibrotic/old scarring |
| Enlarged paratracheal lymph nodes (largest 30x16 mm) | Highly significant - active disease |
| No focal mass, no calcification | Against malignancy |
| Normal bronchovascular pattern, normal hila | Against active parenchymal TB |
The paratracheal LN of 30x16mm is the KEY finding. Normal short axis for mediastinal LN is <10mm; this node is nearly 3x enlarged.
2. Chest X-Ray PA View (06/05/2026) - Neerja Diagnostics
- Reported as "No Significant Abnormality" - This was done one month BEFORE the HRCT and likely missed the mediastinal lymphadenopathy (which is poorly visible on plain X-ray)
- Normal broncho-vascular markings, clear CP angles, normal hila
3. PNS X-Ray - Waters View (12/06/2026) - Shiva Diagnostic Center
- Slightly deviated nasal septum (DNS) towards right
- Mild bilateral nasal turbinate hypertrophy
- Bilateral frontal sinuses partially pneumatized
- Focal polypoid lesion in bilateral maxillary sinuses - ? Bilateral maxillary polyp
4. TrueNat / NAAT Test (18/08/2026) - NTEP Form
| Parameter | Result |
|---|---|
| M. Tuberculosis | DETECTED |
| Rifampicin Resistance | Not Detected |
| Sample | B (sputum) |
| HIV Status | Non-Reactive |
This is the confirmatory test. MTB detected = active pulmonary tuberculosis confirmed.
5. CBC (06/05/2026) - Neerja Diagnostics
| Parameter | Result | Normal | Status |
|---|---|---|---|
| Haemoglobin | 11.4 g/dL | 14-16 g/dL | Low (mild anemia) |
| TLC | 7,500 /cumm | 4,000-11,000 | Normal |
| Polymorphs | 80% | 50-70% | Elevated |
| Lymphocytes | 18% | 20-40% | Borderline low |
| RBC | 3.82 million | 4.5-5.5 million | Low |
| PCV | 34.5% | 40-54% | Low |
| MCV | 90.3 fL | 83-101 fL | Normal |
Interpretation: Normocytic normochromic mild anemia with relative neutrophilia and lymphopenia - a classic pattern in active tuberculosis (chronic disease anemia + TB-related lymphopenia).
Earlier CBC (11/03/2026 - SR PathLabs, at age 48 yrs):
- Hb: 11.90 g/dL, Neutrophils 77.2%, Lymphocytes 18.8%, PCV 38.7% - same trend, persistent over time
6. Urine Examination - Normal
7. Vitamin B12 - 219 pg/mL (Normal range 200-1100) - Low-normal
DIAGNOSIS
PRIMARY DIAGNOSIS: PULMONARY TUBERCULOSIS (Active, Smear-Negative / Microbiologically Confirmed by TrueNat)
Subcategory: Presumptive TB with paratracheal lymphadenopathy (Mediastinal / Hilar TB / Primary Complex pattern in an adult)
Subtype by Drug Sensitivity: Drug-Sensitive TB (Rifampicin Resistance NOT detected on TrueNat)
CLINICAL CORRELATION
Why this is TB (not just "dry cough"):
| Clue | Significance |
|---|---|
| Dry (non-productive) cough x 1 month | Classic initial symptom of primary/pauci-bacillary TB - cough is due to airway irritation from enlarged mediastinal nodes pressing on bronchi |
| Paratracheal LN 30x16mm on HRCT | Hallmark of primary TB pattern - Goldman-Cecil Medicine states: "Lymphadenopathy, which is often unilateral, involves the hilum and right paratracheal nodes" in primary TB |
| Basal fibrotic strands on HRCT | Old healed TB or coexisting ILD - chronicity |
| TrueNat: MTB Detected, Rif-Sensitive | Definitive bacteriological confirmation |
| Mild normocytic anemia + neutrophilia + lymphopenia on CBC | Pattern of chronic infection / active TB |
| Non-smoker | Makes COPD/smoking-related cough unlikely |
| Age 50, male | Reactivation age group |
| HIV Non-Reactive | Rules out HIV-associated TB |
| No focal mass/calcification on HRCT | Against lung malignancy |
Why the cough is dry (no sputum):
In mediastinal / primary-pattern TB, the cough is predominantly dry/non-productive because:
- The main pathology is in the mediastinal lymph nodes (not in the bronchial lumen)
- Enlarged paratracheal nodes irritate the adjacent bronchi and trachea causing an irritant, non-productive cough
- There is minimal parenchymal alveolar involvement (hence no sputum production)
- This is different from post-primary cavitary TB where productive cough with sputum is the norm
ADDITIONAL CONTRIBUTING FINDING: Upper Airway Disease
The PNS X-ray showing bilateral maxillary sinus polyps and nasal turbinate hypertrophy could also be contributing to the cough via Post-Nasal Drip (PND) Syndrome (now called Upper Airway Cough Syndrome - UACS). However, this is a secondary/contributing factor and does NOT explain the mediastinal lymphadenopathy.
DIFFERENTIAL DIAGNOSES (Ruled Out)
| Differential | Reason Against |
|---|---|
| Sarcoidosis | Typically bilateral hilar (not paratracheal) LN; TrueNat MTB positive clinches TB |
| Lymphoma | No focal mass, no constitutional B symptoms mentioned, TrueNat positive |
| Lung Malignancy | Non-smoker, no focal mass/calcification on HRCT, TrueNat positive |
| COPD | Non-smoker; normal bronchovascular pattern on HRCT |
| Allergic/Eosinophilic cough | Eosinophils only 1%; no asthma pattern |
| UACS alone | Cannot explain mediastinal adenopathy |
MANAGEMENT PLAN (India NTEP Guidelines)
Since TrueNat confirms: MTB Detected, Rifampicin NOT Resistant - this is Drug-Sensitive TB (DS-TB):
Category: New DS-TB Patient
Regimen: 2HRZE / 4HR (Standard 6-month regimen under NTEP)
| Phase | Duration | Drugs |
|---|---|---|
| Intensive Phase | 2 months | Isoniazid (H) + Rifampicin (R) + Pyrazinamide (Z) + Ethambutol (E) |
| Continuation Phase | 4 months | Isoniazid (H) + Rifampicin (R) |
Doses (weight-based per NTEP):
- Isoniazid 300 mg/day
- Rifampicin 450 mg/day (if <50 kg) or 600 mg/day (if >50 kg)
- Pyrazinamide 1500 mg/day
- Ethambutol 800 mg/day
Additional Steps:
- Register on Ni-kshay portal (mandatory under NTEP India)
- Ni-kshay Poshan Yojana - Rs. 500/month nutritional support
- Address the mild anemia - check serum iron, ferritin; supplement if iron-deficient
- Vitamin B12 supplementation (low-normal level)
- Baseline LFT (SGOT/SGPT already ordered - review before starting hepatotoxic drugs H, R, Z)
- Reassess sinus polyps with ENT consultation after TB treatment is stable (bilateral nasal polyps may need separate management)
- Contact tracing of household contacts
- Follow-up sputum smear/TrueNat at 2 months (end of IP), 5 months, and 6 months
FINAL DIAGNOSIS SUMMARY
Active Pulmonary Tuberculosis (Primary-pattern / Mediastinal TB) - Drug Sensitive
- TrueNat: MTB DETECTED, Rifampicin Resistance NOT DETECTED
- HRCT: Bilateral basal fibrotic changes + significantly enlarged paratracheal lymph node (30x16 mm)
- Clinical: Dry cough x 1 month, non-smoker, mild normocytic anemia, neutrophilia, lymphopenia
- Contributing: Bilateral nasal polyps / sinusitis (Upper Airway Cough Syndrome component)
- HIV Non-Reactive
The dry (non-productive) cough is explained by mediastinal lymph node compression of the trachea/bronchi - a classic presentation of primary-pattern TB in adults, confirmed bacteriologically by TrueNat. - Goldman-Cecil Medicine, Chapter 299 (Tuberculosis)
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