Rational Approach to a Unilateral Pleural Effusion2

Not Applicable

Terminated

• Conditions: Lung Neoplasms
• Interventions: Device: PET-CT; Device: Contrast-enhanced CT

• Registration Number: NCT02834455
• Lead Sponsor: Simon Reuter

Brief Summary

Recurrent unilateral, non-infectious pleural exudate is suspicious for primary or secondary pleural malignancy. Both conditions are associated with 5-year survival of 10%. Work-up is difficult, as the pleural surface is large and \<33% of pleural malignancies shed malignant cells to the pleural fluid. Even so, additional tissue biopsies are needed for establishing mutation status for targeted therapies.

Optimal imaging to guide tissue sampling is pivotal. PET-CT has higher sensitivity than conventional CT for detecting malignant lesions \>10mm. However, no randomised trial has investigated differences in diagnostic accuracy, time-to-diagnosis, or economics. Falsely PET-positive lesions in e.g. colon however, lead to more derived tests than do CT alone.

Gold standard for pleural tissue sampling is the surgical (VATS) thoracoscopy, allowing direct visual guiding of tissue sampling from all pleural surfaces. Yet, globally the medical (pleuroscopy) thoracoscopy is more widely used: cheaper, outpatient procedure, but allows only sampling from the parietal pleura. To date, no randomised studies have compared medical and surgical thoracoscopy concerning diagnostic hit rates, adverse events, or economics.

The investigators will perform two randomized studies to investigate whether

1. PET/CT is comparable to CT alone

2. VATS is comparable to pleuroscopy concerning hit rate, total investigations performed, time-to-diagnosis.

Detailed Description

Not available

Study Timeline

• Study Start: 2015-05
• Study First Submitted: 2015-06-17
• Study First Submitted QC: 2016-07-12
• Study First Posted: 2016-07-15
• Status Verified: 2020-12
• Primary Completion: 2020-12-15
• Study Completion: 2020-12-15
• Last Update Submitted: 2020-12-15
• Last Update Posted: 2020-12-17

Recruitment & Eligibility

• Status: TERMINATED
• Sex: All
• Target Recruitment: 200

Inclusion Criteria

1. Patients with recurrent pleural effusion of unknown origin after a first pleural tap according to BTS guidelines.
2. Indication for thoracoscopy according to BTS guidelines.
3. Patients accept further investigation according to Danish and BTS guidelines.
4. Have received oral and written consent and agreed.
5. At the time of inclusion, above 18 years of age.

Exclusion Criteria

1. Female patients: pregnancy or breastfeeding.
2. Lack of language comprehension.
3. Legally incompetent patients.
4. Life expectancy less than 3 month.
5. Contraindications to pleural tissue sampling.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
PET-CT scanning	PET-CT	Positron-emission-CT scanning (low dose without contrast) of the thorax and abdomen.
CE-CT scanning	Contrast-enhanced CT	Contrast-enhanced CT scan of the thorax and abdomen.

Primary Outcome Measures

Name	Time	Method
Number of diagnostic thoracoscopies (either MT or VATS)	2 years

Secondary Outcome Measures

Name	Time	Method
Patient satisfaction and patient perceived discomfort	2 years	EuroQol Q-5D a standardised instrument for use as a measure of health outcome
Total costs calculated as costs patient-related, procedure-related, and overall	2 years
Total procedures before cancer-diagnosis (cancer = yes/no)	2 years
Number of patients diagnosed with cancer (cancer = an unequivocal diagnosis of neoplastic disease; no cancer = clinically benign cause, and improved imaging at 6 month control)	2 years
Number of derived investigations (i.e. gastroscopy, coloscopy)	2 years

Trial Locations

Locations (1)

Naestved Sygehus; 🇩🇰 Naestved, Denmark