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Re-expansion pulmonary oedema: two case reports and review of the current literature

Kwan HF, Ng BH, Nik Abeed NN, Ban AY

BMJ Case Rep, 2024 Nov 07;17(11).
PMID: 39510609 DOI: 10.1136/bcr-2023-259166

Re-expansion pulmonary oedema (RPE) is an uncommon complication that occurs when a collapsed lung suddenly re-expands, resulting in an osmotic shift of fluid from the blood vessels into the air spaces within the lungs. This condition can develop following thoracocentesis or intercostal chest drainage. We report two cases of RPE that developed after varying volumes of pleural drainage and at different times. Both patients responded well to non-invasive ventilation and hydrocortisone, making a full recovery. Early detection is crucial as RPE is associated with higher mortality rates, but a positive prognosis is attainable with prompt identification and intervention.

Matched MeSH terms: Thoracentesis/methods
Fulltext Efficacy of anti-tuberculosis treatment alone on resolution of tuberculosis pleural effusions

Selvarajah, V.S., Samudram, S., Chua, L.T., Yuhana, D. Siti, Lim, B.K., S. Wan Yusuf, et al.

International e-Journal of Science, Medicine & Education, 2007;1(2):83-86.
MyJurnal

To determine the degree of resolution in pleural effusions treated with anti-tuberculosis treatment alone without thoracentesis, 62 eligible adult cases [mean age (SD), 46 (17) yrs; 77% male] of tuberculosis pleural effusions treated in two urban-based university teaching hospitals were retrospectively reviewed for changes in effusion size at 2, 6 and 12 months after initiation of treatment. The proportions of patients in whom resolution were complete, partial and unchanged were 64.5%, 27.4% and 8.1%. Effusions with size smaller than three tenth of hemithorax were at three-fold increased likelihood of complete resolution, compared with those with larger effusions [Odds ratio (95% CI): 3.295 (1.033 to 10.514); p=0.04]. Consideration for thoracentesis is therefore still important in certain patients.

Matched MeSH terms: Thoracentesis
Fulltext Empyema thoracis presented as giant back abscess

Abd Karim SH, Wan Zain WZ, Mohd Hashim MN, Zakaria AD, Hayati F, Ng CY

Radiol Case Rep, 2021 May;16(5):1061-1064.
PMID: 33680277 DOI: 10.1016/j.radcr.2021.02.030

Empyema thoracis (ET) is defined as pus in the pleural space, either localized or involving the entire pleural cavity, due to diverse etiologies. In severe form, it may infiltrate the extrapulmonary region. Clinical guideline describes 3 stages of parapneumonic effusion before developing into an ET, namely the exudative stage, the fibrinopurulent stage, and the organizing/late stage. We highlight a 59-year-old gentleman who presented a back swelling masquerading as a deep-seated abscess, in which the diagnosis of ET had not been established early. The principles of treatment are treating the underlying condition such as pneumonia, pleural drainage and debridement, full re-expansion of the collapsed lung by performing chest physiotherapy, and improving nutrition. ET is a condition with a dynamic process due to diverse etiologies, either localized or involving the entire pleural cavity. The gold standard in diagnosing ET is the pleural aspiration of fluid from the pleural space, whereas the management of ET may include non-surgical and/or surgical treatments based on the basic principles of ET treatment.

Matched MeSH terms: Thoracentesis
Pleural fluid lactate as a point-of-care adjunct diagnostic aid to distinguish tuberculous and complicated parapneumonic pleural effusions during initial thoracentesis: Potential use in a tuberculosis endemic setting

Kho SS, Chan SK, Yong MC, Cheah HM, Lee YG, Tie ST

Respir Investig, 2020 Sep;58(5):367-375.
PMID: 32107195 DOI: 10.1016/j.resinv.2020.01.004

BACKGROUND: Tuberculous pleural effusions (TBEs) and parapneumonic pleural effusion (PPEs) have similar clinical presentations and fluid biochemistry. A pleural biopsy is usually required to diagnose TBE but complete fluid evacuation may not be necessary, contrasting with complicated PPE (CPPE). A point-of-care test that distinguishes between TBE and CPPE enables the appropriate procedures to be performed during the initial diagnostic thoracentesis. Lactate is a metabolic product measurable by a blood-gas analyzer. This study measured pleural fluid (Pf) lactate levels in TBE and compared them with those in PPE/CPPE. We hypothesized that Pf lactate would be significantly higher in PPE because of active metabolic activities than in TBE which is driven by delayed hypersensitivity.
METHODS: All patients undergoing an initial diagnostic thoracentesis over 18 months with Pf lactate measured using a calibrated point-of-care blood gas analyzer were assessed.
RESULTS: The diagnoses of the enrolled patients (n = 170) included TBE (n = 49), PPE (n = 47), malignancy (n = 63), and transudate (n = 11). Pf lactate level in TBE, median 3.70 (inter-quartile range 2.65-4.90) mmol/l, was significantly lower than in PPE and CPPE. In the subgroup of TBE and CPPE patients whose initial Pf pH and glucose could suggest either condition, Pf lactate was significantly higher in those with CPPE. Pf lactate (cutoff ≥7.25 mmol/l) had a sensitivity of 79.3%, specificity 100%, positive predictive value 100%, and negative predictive value 89.1% for discriminating CPPE from TBE (area under the curve 0.947, p

Matched MeSH terms: Thoracentesis/methods*
Fulltext Low-dose intrapleural alteplase (without deoxyribonuclease) in complicated parapneumonic effusion: case series and literature reviews

Lai C, Mohammad N, Hassan TM, Abdul Hamid MF

BMJ Case Rep, 2017 Sep 11;2017.
PMID: 28893806 DOI: 10.1136/bcr-2017-221239

This case series reviews two cases of elderly patients who presented with fever, cough and shortness of breath. Clinical examinations and initial chest radiographs confirmed unilateral pleural effusion. Thoracenteses were consistent with exudative pleural effusion. We commenced intravenous antibiotics treating for parapneumonic effusions. The first case showed persistent effusion despite drainage, and the second case had a little aspirate from pleural tapping. Subsequent ultrasound of the thorax showed multiloculated effusions. We made the decisions for intrapleural fibrinolytic therapy using low-dose alteplase 2.5 mg each time, in view of the elderly patient as sacrosanct for risk of bleeding. Furthermore, DNase was not used, as it is not yet available in our setting. Both of our patients had good clinical and radiological outcomes, without the need for surgical interventions.

Matched MeSH terms: Thoracentesis/methods*
Fulltext Transudative pleural effusion in a patient with pleural tuberculosis

Meryl Grace Lansing, Liew Sat Lin Constance, Chang Chee Keong, Pradip Subramaniam

Malaysian Journal of Medicine and Health Sciences, 2019;15(106):97-97.
MyJurnal

Introduction:Light’s criteria for pleural fluid analysis has long been the standard for distinguishing transudates from exudates. In pleural tuberculosis, the resulting pleural fluids are usually exudates. We present a case of presumed transudative effusion which was eventually diagnosed as pleural tuberculosis. Case description: A 59-year-old man with end-stage renal failure (ESRF) on regular haemodialysis presented with a one-day history of acute onset dys-pnoea associated with pleuritic chest pain and cough. Chest radiograph revealed bilateral pleural effusions and thoracentesis was done. The pleural fluid result was interpreted as transudative effusion according to Light’s criteria because his pleural fluid to serum protein ratio was less than 0.5. AFB 1+ was seen in the pleural fluid with negative gram stain and culture. This resulted in conflicting opinions on whether to start this patient on anti-tuberculous ther-apy (ATT) and there was even a suggestion to get a second opinion for the possibility of AFB fluid contamination. The initial diagnosis was written as fluid overload secondary to ESRF but ATT was started anyway to cover for pleural TB. On further analysis of his pleural fluid, the pleural protein 32 g/L which on its own is a marker of exudative effusion. Subsequent investigations revealed the presence of exudative ascitic fluid which further raised the suspicion for a concomitant peritoneal TB. Conclusion: Premature conclusion that the pleural fluid was transudative occurred prob-ably due to the bilateral nature of the pleural effusion associated with a known tendency for the patient to develop pulmonary overload secondary to his ESRF. This case is a reminder that Light’s criteria also requires serum and fluid LDH measurement for the diagnosis of transudative pleural effusion. More importantly, a high level of suspicion for TB is important when evaluating patients from areas where TB is prevalent and a positive AFB result should not be taken lightly.

Matched MeSH terms: Thoracentesis
Fulltext Resolution of refractory chylothorax with a combination of talc pleurodesis and CPAP

Ng BH, Nik Abeed NN, Abdul Hamid MF, Soo CI, Low HJ, Ban AY

Respirol Case Rep, 2020 Oct;8(7):e00624.
PMID: 32685169 DOI: 10.1002/rcr2.624

Chylothorax is an uncommon cause of pleural effusion. Recurrent chylous effusions are often resistant to conservative treatment and many need surgical intervention. We report a 69-year-old woman with refractory idiopathic chylothorax resistant to medium-chain triglyceride diet and intermittent thoracentesis. Lymphangiography and lymphoscintigraphy failed to identify the site of leakage. We initiated continuous positive airway pressure (CPAP) 12 h before and 48 hours after talc pleurodesis. Chest drain was removed at day 3 and she was discharged at day 5. To our knowledge, this is the first case of successful resolution of idiopathic refractory chylothorax with CPAP ventilation used in tandem with talc pleurodesis.

Matched MeSH terms: Thoracentesis
Fulltext Loculated transudative pleural effusion masquerading as right upper lobe consolidation in a haemodialysis patient

Kho SS, Tay PS, Lee J, Tie ST

AME Case Rep, 2017;1:4.
PMID: 30263991 DOI: 10.21037/acr.2017.09.05

Pleural effusion is a common encounter in renal failure patients and frequently possess a diagnostic challenge to clinician especially when it was exudative. Fortunately, transudative pleural effusion secondary to fluid overload remains the commonest cause of pleural effusion in haemodialysis patients. Frequent thoracocentesis enhance pleural inflammation and potentially complicate further this challenging clinical presentation. We report a middle-aged gentleman with advanced chronic kidney disease presented with dyspnea and new right upper lobe consolidation on chest roentograph. He had a history of recurrent bilateral pleural effusion secondary to fluid overload and hence multiple attempts of thoracocentesis were performed. Medical thoracoscopy performed previously yielded non-specific pleuritis. Flexible bronchoscopy demonstrates normal airway with negative microbiological studies. Computed tomography (CT) of the thorax shown a loculated hypodense pleural effusion at the apical region of the right upper lobe. Ultrasound guided thoracocentesis anteriorly yield 400 mL of clear straw color fluid which was transudative by Light's criteria. Post tapping chest X-ray shown complete resolution of right upper lobe consolidation and patient reports immediate relieve of dyspnea. Patient was started on regular effective haemodialysis and pleural effusion did not recur during follow up. Loculated pleural effusion masquerading as mediastinal tumour had been reported but pleural effusion that conformed to the contour of a lung lobe is rare. This case highlights the atypical but unique presentation of a transudative pleural effusion and demonstrates the risk of repeated thoracocentesis complicating a simple clinical presentation.

Matched MeSH terms: Thoracentesis
The great masquerade: Empyema thoracis as an unusual presentation of primary lung malignancy

Nyanti LE, Kho SS, Tie ST

Med J Malaysia, 2019 02;74(1):79-81.
PMID: 30846667

Primary lung malignancy presenting as empyema is rare, with a reported incidence of 0.3%. We report a case of a 60- year-old man presenting with unilateral pleural effusion; diagnostic thoracocentesis confirmed Salmonella empyema. Post-drainage, chest radiograph showed persisting right hemithorax opacity; subsequent computed tomography revealed a right lung mass with right upper lobe bronchus obliteration. Percutaneous biopsy confirmed advanced stage lung adenocarcinoma. We discuss the mechanism of post-obstructive pneumonia in lung cancerassociated empyema and the utility of bedside ultrasound in diagnosis of lung masses. Clinicians are alerted to the possibility of lung malignancy in elderly patients presenting with empyema.

Matched MeSH terms: Thoracentesis