ISSN 2398-2985      

Fine needle aspiration biopsy

Jreptile

Introduction

  • Fine-needle aspiration biopsy is a cost-effective procedure that can be performed on cutaneous, subcutaneous, or internal masses and internal organs such as the liver, spleen, and kidney.
  • Aid in diagnosis of etiology of superficial masses and enlarged lymph nodes by cytologic evaluation.
  • Two basic techniques are typically used for this procedure: aspiration and non-aspiration.

Uses

  • The procedure can provide a cytologic sample for a rapid presumptive or definitive diagnosis and often can be repeated if necessary with minimal trauma to the patient.

Advantages

  • Rapid method of diagnosis.
  • Simple - requires minimal equipment.
  • Can often be performed on conscious unsedated patient.
  • Often yields definitive diagnosis.
  • Non-aspiration technique:
    • The reduction of blood contamination when sampling highly vascular tissues.
    • This method is especially useful for obtaining cytologic specimens from the liver, spleen and kidney.

Disadvantages

  • In some cases, sample may be non-diagnostic or mis-representative of lesion.
  • May spread infection along line of needle insertion.
  • Hemorrhage may occur if blind insertion of needle encounters large blood vessel.

Requirements

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Preparation

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Procedure

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Aftercare

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Outcomes

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Further Reading

Publications

Refereed papers

Other sources of information

  • Campbell T W (2015) Cytology Sampling Techniques and Evaluation. In: Exotic Animal Hematology and Cytology. 4th edn. Wiley-Blackwell. pp 346-347.
  • Heard D, Harr K & Wellehan J (2004) Diagnostic Sampling and Laboratory Tests. In: Manual of Reptiles. 2nd edn. Eds: Girling S J & Raiti P. BSAVA, UK. pp 71-86.
Reproduced with permission from Terry W Campbell: Exotic Animal Hematology and Cytology © 2015, published by John Wiley & Sons.

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