Choosing the appropriate type of specimen is the first step toward obtaining a reliable diagnosis. The decision between a histological biopsy and a cytological aspiration is not based on the operator’s preference, but on the clinical question that needs to be answered.
Two Techniques, Different Diagnostic Information
Histological biopsy and fine needle aspiration (FNA) are not competing techniques; rather, they are complementary diagnostic approaches. Each provides different information and is indicated in specific clinical settings.
Fine Needle Aspiration (FNA), performed with thin needles such as CHIBELL™, collects individual cells or small cellular aggregates. Cytological examination allows the evaluation of cellular morphology and is often the preferred first-line approach when a minimally invasive procedure is required or when an initial diagnostic assessment of many lesions is sufficient.
Core Needle Biopsy (CNB), performed with cutting needles such as BIOSOFT™, retrieves an intact tissue core while preserving tissue architecture. This enables the pathologist to evaluate not only cellular morphology but also tissue organisation.
Needle Selection Makes the Difference
The sampling device is far more than a technical detail: it directly influences the quality and suitability of the specimen for the required diagnostic investigations.
Fine needles ranging from 21G to 25G are frequently the preferred choice for FNA of thyroid nodules, many lymph node lesions, and other clinical situations where obtaining cytological information with minimal invasiveness is the primary objective.
Core biopsy needles ranging from 14G to 18G are widely used for biopsies of the breast, prostate, kidney, liver, lung, and many other deep-seated lesions when a complete tissue specimen is required for histological characterisation.
Automatic biopsy devices such as ESTER™ provide standardised and reproducible tissue sampling, helping clinicians obtain high-quality specimens.
When multiple tissue cores are required from the same lesion, a coaxial introducer system such as INTRODUTTORE™ allows repeated sampling through a single access point, minimising the number of tissue passes and improving procedural efficiency.
An Adequate Sample Avoids Repeat Procedures
A non-diagnostic specimen may require a repeat biopsy, potentially delaying diagnosis and treatment, increasing patient discomfort, and adding healthcare costs.
For this reason, the choice between cytology and histology should be made before the procedure as part of a multidisciplinary approach. Identifying the clinical information needed from the outset helps clinicians select the most appropriate sampling technique and device, maximising the likelihood of obtaining a diagnostically adequate specimen on the first attempt.
