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The cryo-needle: a new tool for histological biopsies. A feasibility study
Karl-Josef Franke1, Georg Nilius, Karl-Heinz Ruehle
1Department of Pneumology and Critical Care Medicine, Helios Klinik Ambrock, Chair of Internal Medicine I, Witten/Herdecke University, Ambrocker Weg 60, 58091, Hagen, Germany, karl-josef.franke@helios-kliniken.de.
Lung
|August 31, 2013
Summary
A novel cryo-needle provides large, high-quality histological specimens for biopsies, proving feasible and safe in animal studies. This technique enhances diagnostic yield compared to standard methods.
Area of Science:
- Pulmonary Medicine
- Interventional Pulmonology
- Surgical Pathology
Background:
- Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) is standard for intrathoracic lymph node biopsies.
- A new cryo-needle aims to improve specimen quality for histological evaluation.
Purpose of the Study:
- Evaluate the feasibility, efficacy, and safety of cryo-needle biopsies in an animal model.
- Compare cryo-needle biopsy yield with conventional EBUS-TBNA.
Main Methods:
- Performed EBUS-guided cryo-needle biopsies on a pig's mediastinal lymph node.
- Obtained cryo-needle and 21-gauge EBUS-TBNA biopsies from mesenteric lymph nodes using varying activation times and an oversheath.
- Assessed biopsy size, weight, lymphatic tissue percentage, and artefact presence; measured bleeding duration.
Main Results:
- Successfully obtained EBUS-guided cryo-needle biopsies.
- Cryo-needle biopsies with longer activation times (A3) and oversheath (A2+) were significantly larger and heavier than A1.
- Biopsies showed high lymphatic tissue content (90%) and minimal artefacts (98%).
Conclusions:
- The cryo-needle effectively yields large, high-quality histological specimens.
- This technique shows promise for improving diagnostic accuracy in lymph node biopsies.
