Modified PAIR Technique for Percutaneous Treatment of High-Risk Hydatid Cysts

Journal Article · Fri Apr 15 04:00:00 EDT 2005 · Cardiovascular and Interventional Radiology

DOI:https://doi.org/10.1007/PL00021047· OSTI ID:22207990

Khawaja, Fazal I. ^[1]; Mohammad, Ghanem A. ^[2]

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1. King Fahad Hospital, Department of Gastroenterology and Gastrointestinal Endoscopy (Saudi Arabia)
2. Al-azhar University Medical Center, Department of Chest Diseases (Egypt)

Purpose: This paper presents a modification of the known method for percutaneous treatment of hydatid cyst, the PAIR technique. It aimed to achieve safe aspiration of large symptomatic cysts and cysts with a danger of impending rupture. Methods: We designed a coaxial catheter system to achieve concomitant evacuation of cyst contents while infusing scolicidal agent. Hypertonic saline is used to wash out cyst contents and to kill protoscolices. This was followed by injection of a sclerosant (ethyl alcohol 95%) into the residual cyst cavity to prevent formation of a cyst collection after the procedure. Seventeen cysts in 14 patients were successfully aspirated. Follow-up plain radiographs, ultrasonography and CT were performed weekly in the first 4 weeks and then at 3, 6 and 12 months for all patients. Seven patients (9 drained cysts) were followed up for 2 years and 1 patient for 3 years. Results: All cysts were successfully aspirated. The following morphologic changes were noticed: a gradual decrease in cyst size (17 cysts, 100%), thickening and irregularity of the cyst wall due to separation of endocyst from pericyst (7 cysts, 41%), development of a heterogeneous appearance of the cyst components (8 cysts, 47%) and development of pseudotumor (2 cysts, 12%). None of the treated cysts disappeared completely. No significant procedure-related complications were encountered. Conclusion: This modified PAIR technique is a reliable method for percutaneous treatment of risky and symptomatic hydatid cysts.

• OSTI ID: 22207990
• Journal Information: Cardiovascular and Interventional Radiology, Journal Name: Cardiovascular and Interventional Radiology Journal Issue: 2 Vol. 28; ISSN 0174-1551; ISSN CAIRDG
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
CYSTS
ETHANOL
IMAGES
INJECTION
PATIENTS
RUPTURES
ULTRASONOGRAPHY
VASCULAR DISEASES