# Pleural Decortication > Decortication for NEET-PG Surgery: organised empyema cortex, trapped lung, timing after 3 to 4 weeks, operative steps and space problems. - Canonical URL: https://prepelephant.com/topics/neet-pg/surgery/pleural-decortication - Exam / course: NEET-PG · Subject: Surgery - Publisher: PrepElephant (https://prepelephant.com) — Prepared and reviewed by the PrepElephant Academic Review Team - First published: 2026-10-02 - Last updated: 2026-10-02 - How to cite: "Pleural Decortication", PrepElephant, https://prepelephant.com/topics/neet-pg/surgery/pleural-decortication ## Direct answer A trapped lung that fails to re-expand after an empyema is drained — the chest radiograph stays opacified, the patient stays dyspnoeic, and CT shows a thick rind of fibrous cortex encasing the visceral pleura — is the indication for decortication: surgical removal of the fibrous peel so the lung can expand and obliterate the pleural space. Timing follows the pathology: the operation is the definitive treatment of the organising stage of empyema, typically three to four weeks or more after onset, when lytics and VATS debridement can no longer free the lung; earlier disease (first two weeks) is better served by tube drainage, fibrinolytics or VATS. Decortication succeeds only when the underlying lung is healthy enough to expand — a destroyed tuberculous or bronchiectatic lung will not fill the space, and the surgeon must then plan for space management (muscle flaps, thoracoplasty or open drainage) instead. ## What you must remember - Definition: decortication is the extrapleural-to-subpleural stripping of a fibrous cortex (the "peel") from the visceral pleura (and any parietal rind), not simple evacuation of pus — what distinguishes it from drainage is that it restores lung expansion. - Indications: organising empyema with trapped lung (usually after 3–4 weeks of disease, once a mature fibrous peel has formed); failed tube drainage with persistent space; organised haemothorax; occasionally long-standing trapped lung from rheumatoid or tuberculous pleurisy once active disease is controlled. - The principle of the space: an emptied hemithorax with a stiff, unexpanded lung leaves a residual cavity that reinfects — success is measured by full lung apposition at the end of the operation, not by how much cortex came off. - Operative approach: posterolateral thoracotomy (fifth or sixth space) for dense, chronic disease; VATS decortication is feasible for the earlier, less organised phase and in experienced centres; the peel is developed in the correct plane (just on the lung, leaving visceral pleura intact), starting where it is thinnest, and the lung is "skeletonised" including the fissures and diaphragm, which are classically the stuck areas. - Intraoperative essentials: one-lung ventilation, careful haemostasis (raw surfaces ooze), testing expansion under direct vision, and leaving large-bore drains (apical and basal) on suction; air leaks from small parenchymal tears usually settle over days. - Contraindications and futilities: a completely destroyed lung (extensive tuberculosis, bronchiectasis, post-pneumonectomy syndrome), uncontrolled active tuberculosis without therapy, heavy pleural disease with end-stage restrictive lung, or an unfit patient — for these, the question becomes space obliteration or chronic drainage. - Space problems after decortication: persistent space with air leak is managed by prolonged drainage, then options — Clagett (open window thoracostomy) with staged closure, Eloesser flap for permanent open drainage, muscle transposition (latissimus, serratus, omentum) to fill residual cavities, or thoracoplasty (rib resection) to collapse the chest wall onto the space, now reserved for selected chronic cases. - Postoperative care is half the operation: chest physiotherapy, incentive spirometry, adequate analgesia (epidural), positive pressure where appropriate to keep the lung plastered to the chest wall, antibiotics (antitubercular therapy where tuberculosis is the cause) and nutrition. ## A typical case walked through A 35-year-old man was treated elsewhere for a staphylococcal pneumonia six weeks ago; a chest tube drained pus but he remains febrile with a dense left hemithorax on radiograph, reduced chest wall movement and dyspnoea on walking. CT shows a thick enhancing pleural rind with loculated fluid and a small, splinted lung. Reason it through: this is stage 3 organising empyema — six weeks in, the peel is mature, and further tubes or lytics will simply buy time while fibrosis matures further. He is fit, and the lung beneath (on CT parenchymal windows) looks largely intact, so the plan is decortication. At posterolateral thoracotomy, the cortex is stripped from the lung surface, fissures and diaphragm until the lung fills the hemithorax on the ventilator; two drains are left on suction; physiotherapy and epidural analgesia start the same evening. Follow the alternative fork: had CT shown a shrunken, cavitated upper lobe from old tuberculosis with the empyema plastered to destroyed parenchyma, decortication alone would leave a persisting infected space — the discussion becomes antitubercular therapy plus either a thoracoplasty/muscle flap obliteration or a Clagett window, and in a marginal patient, a permanent Eloesser-type open drainage. ## Where students slip The recurring slip is conflating decortication with drainage — the exam mark is for "removal of the cortex so the lung re-expands"; evacuating pus alone in stage 3 disease leaves the peel and the trapped lung exactly as they were. The second is timing: offering decortication in week one (where tube plus lytics or VATS wins) or offering lytics in week six (where the mature cortex defeats them). The third is forgetting the "will the lung expand?" test — decortication of a destroyed tuberculous lung fails by definition, and naming that limitation is what elevates the answer. ## Frequently asked questions ### What is pleural decortication? Surgical stripping of the organised fibrous cortex from the visceral (and parietal) pleura in organising empyema or organised haemothorax, allowing the trapped lung to re-expand and obliterate the pleural space. ### When in the empyema timeline is decortication performed? In the organising stage, classically after 3–4 weeks or more, once a mature peel has trapped the lung and less invasive measures (tube, fibrinolytics, early VATS) are no longer adequate. ### What intraoperative finding defines a successful decortication? Full expansion of the lung to appose the chest wall and diaphragm under vision at the end of the procedure — an emptied pleural space with a still-collapsed lung guarantees failure. ### How is a persistent pleural space after decortication managed? Prolonged drainage first, then options including open window thoracostomy (Clagett), Eloesser flap, muscle or omental flap transposition, and thoracoplasty in selected chronic cases. ### Why does decortication fail in tuberculous empyema with a destroyed lung? The underlying parenchyma is fibrotic and non-expandable, so removing the peel cannot restore ventilation or fill the space — management shifts to space obliteration or drainage plus antitubercular therapy.