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[Computed tomography guided fine needle aspiration biopsies].

F Cruz¹, P Soffia, P del Río

¹Departamento de Radiología, Hospital Clínico, P. Universidad Católica de Chile.

Revista Medica De Chile

|November 1, 1992

Summary

Computed tomography (CT) guided fine needle biopsy is a safe and accurate diagnostic tool for thoracic and abdominal lesions. This minimally invasive procedure offers high accuracy, particularly for thoracic cancers, aiding in neoplasia diagnosis.

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Area of Science:

Radiology and Imaging
Interventional Oncology
Pathology

Context:

Ultrasound and conventional X-rays may not adequately visualize lesions or needle tracts for biopsies.
Computed tomography (CT) offers superior visualization for guiding percutaneous biopsies.
Clinical suspicion of neoplasia necessitates accurate diagnostic procedures.

Purpose:

To evaluate the safety and diagnostic accuracy of CT-guided percutaneous fine needle aspiration biopsies.
To assess the efficacy of CT-guided biopsies in diagnosing thoracic and abdominal lesions.
To determine the accuracy rates for specific organs, including lung, liver, gallbladder, and pancreas.

Summary:

A 6-year study involved 104 patients with suspected neoplasia undergoing CT-guided percutaneous aspiration biopsies.

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Procedures were most common in the lung (39.5%), liver/gallbladder (20.2%), and pancreas (15.4%), with 49% thoracic and 51% abdominal.

Thoracic procedures showed 98% accuracy (one false negative). Abdominal procedures had 88% accuracy (six false negatives, mainly pancreatic/retroperitoneal).

Impact:

CT-guided fine needle biopsy is a safe and highly accurate method for diagnosing thoracic lesions.
The procedure demonstrates significant diagnostic value for abdominal lesions, though with a higher false-negative rate for specific locations.
This technique enhances diagnostic capabilities in oncology, particularly when conventional imaging is insufficient.