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Fine needle aspiration cytology

L H Manheimer, A M Rywlin

    Southern Medical Journal
    |August 1, 1977
    PubMed
    Summary

    This study tested the accuracy of fine needle aspiration cytology for diagnosing breast and extramammary lesions. A 25-gauge needle and 10 ml syringe were used to collect samples, which were then prepared and stained for microscopic analysis. The results showed strong agreement with histological diagnoses, with no false positives. Eleven breast cases had falsely negative results, mainly due to poor aspiration technique. The authors propose that FNA could reduce the need for surgical biopsies. The method was also effective for non-breast sites. The study emphasizes the importance of proper technique to avoid errors. The findings support wider use of FNA as a less invasive diagnostic option.

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    Area of Science:

    • Diagnostic cytology in oncology
    • Breast cancer screening methods
    • Medical imaging and biopsy alternatives

    Background:

    Breast cancer detection often relies on invasive procedures like biopsies. Prior research has shown that these methods, while effective, carry risks and costs. A need exists for less invasive diagnostic tools. Fine needle aspiration (FNA) has been proposed as a possible alternative. However, its accuracy and reliability remain under investigation. No prior work had resolved whether FNA could replace traditional biopsies in most cases. This gap motivated the study to assess FNA's diagnostic performance. The researchers aimed to determine if FNA could reduce the need for surgical interventions. The study focused on both breast and non-breast sites to evaluate broader applicability.

    Purpose Of The Study:

    The goal was to evaluate the diagnostic accuracy of fine needle aspiration cytology. The researchers wanted to compare FNA results with histological diagnoses. They aimed to determine if FNA could serve as a reliable alternative to biopsies. The study included both breast and extramammary sites to assess versatility. The team sought to measure the rate of false-negative and false-positive results. They also wanted to identify factors leading to diagnostic errors. The motivation stemmed from the need to minimize invasive procedures. The study aimed to support clinical decisions using a less invasive method.

    Keywords:
    Fine needle aspirationBreast cancer diagnosisCytology techniquesMedical biopsy alternatives

    Frequently Asked Questions

    The study found that fine needle aspiration results closely matched histological diagnoses, with no false positives.

    A 25-gauge needle attached to a 10 ml syringe was used for all aspirations.

    Eleven breast cases were falsely negative, mostly due to faulty aspiration technique.

    Samples were smeared on slides, air-dried, and stained with Wright-Giemsa solution.

    Eleven out of 221 breast cases had falsely negative diagnoses.

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    Main Methods:

    The study used a 25-gauge needle connected to a 10 ml syringe. Aspirations were performed on 221 breast and 32 extramammary sites. The collected material was transferred to a slide for analysis. Slides were prepared using a second slide for smearing. Samples were air-dried and stained with Wright-Giemsa solution. Cytological interpretations were compared to histological findings. The researchers recorded all discrepancies between the two methods. They analyzed the causes of false-negative and false-positive results.

    Main Results:

    The cytologic findings matched histological diagnoses in most cases. No false-positive results were reported in the study. Eleven breast cases had falsely negative diagnoses. These errors were primarily due to inadequate aspiration. The technique showed strong correlation in extramammary sites as well. The study found no evidence of overdiagnosis or unnecessary interventions. The accuracy rate was high enough to justify further clinical use. The researchers concluded that FNA could reduce the need for biopsies.

    Conclusions:

    The study supports the use of fine needle aspiration for breast and extramammary lesions. The authors propose that FNA can serve as a reliable diagnostic tool. They suggest that it may reduce the need for surgical biopsies in many cases. The technique's accuracy was sufficient for clinical decision-making. The researchers note that false-negative results were rare and avoidable. They emphasize the importance of proper aspiration technique. The findings suggest FNA is a safe and effective alternative. The authors recommend wider adoption of the method in clinical practice.

    Failed At:

    2026-07-14T07:45:00.651557+00:00

    The authors suggest that widespread use of FNA could reduce the need for breast biopsies.