Lung Resection Basics
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Direct answer
Lobectomy with mediastinal lymph node dissection remains the standard operation for operable non-small cell lung cancer, with pneumonectomy reserved for central tumours that cannot be cleared by lesser means, and sublobar resection accepted for small peripheral lesions or compromised reserve. In India, the same operations are performed as often for destroyed lungs — tuberculosis, bronchiectasis, fungal cavities — as for cancer. Fitness is quantified before surgery by FEV1 and DLCO with predicted postoperative values, the classical rule demanding an FEV1 above 1.5 litres for lobectomy and above 2 litres for pneumonectomy, and bronchopleural fistula is the feared complication, commonest after right pneumonectomy.
What you must remember
- The resection ladder: non-anatomical wedge, anatomical segmentectomy, lobectomy, sleeve (bronchoplastic) lobectomy, pneumonectomy — each rung trading lung spared against oncological clearance.
- Classical pulmonary function gates: FEV1 above 1.5 L for lobectomy and above 2 L for pneumonectomy, or — more precisely — predicted postoperative FEV1 and DLCO above 30–40% after accounting for segments removed.
- When predicted values fall near the boundary, cardiopulmonary exercise testing decides: a peak VO2 above 15–20 mL/kg/min is reassuring, below 10–12 high-risk.
- Sleeve lobectomy — resecting a bronchial sleeve with the lobe and reanastomosing — preserves lung in central tumours with oncological results comparable to pneumonectomy and better quality of life; "attempt whenever feasible" is the viva answer.
- Bronchopleural fistula: roughly 1–2% after lobectomy and several-fold higher after pneumonectomy, the right side and induction chemoradiotherapy the classical risk factors; presentation peaks around day 5–14 with fever, a falling air-fluid level, expectoration of fluid and clinical deterioration.
- Fistula management is a sequence: drainage and antibiotics, window thoracostomy (Clagett or Eloesser) in sick patients, early stump reclosure with vascularised cover — intercostal muscle, serratus, latissimus or omentum — in the fit.
- Indian indications beyond cancer: destroyed lung from tuberculosis, massive haemoptysis including aspergilloma, and bronchiectasis.
Assessing fitness for pneumonectomy
A 60-year-old smoker with a central right upper tumour encasing the bronchus intermedius needs a pneumonectomy — if he can survive it. Spirometry first: an FEV1 of 58% predicted converts, on the standard segment calculation, to a predicted postoperative value near 40% — acceptable. DLCO at 60% predicted gives a postoperative estimate comfortably above the alarm line. Predicted values between 30% and 60% mandate exercise testing; a shuttle walk beyond 400 metres or a peak VO2 of 16 mL/kg/min clears him. Cardiac screening follows in a hypertensive smoker. Then the cancer decision: PET-CT excludes distant disease, endobronchial ultrasound samples a prominent station 7 node and returns negative, and multidisciplinary review confirms the plan. At operation the surgeon explores for resectability before committing, the bronchial stump is kept short and covered, and postoperative care anticipates gradual fluid filling of the pneumonectomy space, arrhythmia prophylaxis, careful fluid balance and an obsessive watch for fistula.
The Indian differential: tuberculosis
A young Indian patient with a destroyed lung forces a different reasoning chain than a Western cancer stem. Confirm activity: smear and culture, with the operability window individualised under antitubercular therapy cover. Map the anatomy — a thickened pleura, contracted hemithorax and fused hilum make pneumonectomy bloodier and the bronchial stump more vulnerable. Anticipate the specific complications: higher fistula rates in tuberculous airways, empyema of the residual space, and asynchronous disease in the contralateral lung. Respiratory function after removing an already functionless lung is often better tolerated than imaging suggests. Mixing the cancer and tuberculosis pathways without acknowledging their different rhythms is the error viva panels watch for.
Frequently asked questions
What pulmonary function values permit lobectomy?
The classical rule is FEV1 above 1.5 litres for lobectomy and above 2 litres for pneumonectomy, refined by predicted postoperative FEV1 and DLCO above 30–40%. Borderline cases proceed to exercise testing.
What is a sleeve resection and when is it chosen?
Removal of a bronchial segment with the involved lobe and end-to-end bronchial anastomosis, preserving the remaining lung. It is chosen for central tumours involving lobar bronchi origins and preferred over pneumonectomy whenever clearance permits.
When is pneumonectomy deliberately avoided?
When sleeve or lobectomy achieves the same clearance, when predicted postoperative function is prohibitive, or with poor cardiac reserve — pneumonectomy carrying the highest mortality, fistula risk and long-term right heart burden.
What is bronchopleural fistula and when does it present?
A breakdown of the bronchial stump communicating with the pleural space, presenting typically in the first two weeks with fever, expectoration of pleural fluid, a falling air-fluid level and deterioration. It is commonest after right pneumonectomy.
How is an established bronchopleural fistula managed?
Immediate tube drainage and antibiotics, window thoracostomy in unfit patients, and early re-closure of the stump with vascularised tissue cover — muscle or omentum — in fit patients. Chronic empyema cavities are managed by thoracoplasty or myoplasty.
Which non-malignant Indian indications demand lung resection?
Destroyed lung from tuberculosis, life-threatening haemoptysis including that from aspergilloma, localised bronchiectasis refractory to medical therapy, and empyema with trapped lung.