Biopsy Basics Quiz
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Questions and Answers

What is the usual approach for small lesions (less than 1cm in diameter) in excisional biopsy?

  • Scraping of the lesion for cytology
  • Excision of the entire lesion (correct)
  • Incision of the lesion for tissue sampling
  • Aspiration of cells using a needle

What is the principle of excisional biopsy?

  • Aspiration of cells from the lesion
  • Partial removal of the lesion for analysis
  • Scraping the surface of the lesion
  • Excision of the entire lesion with surrounding tissue (correct)

What type of anesthesia is typically used around the lesion peripheries before excisional biopsy?

  • Local anesthesia with vasoconstrictor (correct)
  • Topical anesthesia
  • Regional anesthesia
  • General anesthesia

How should the length of the incision compare to its width in excisional biopsy?

<p>3 times its width (B)</p> Signup and view all the answers

Which biopsy technique involves the removal of a tissue core using a specific type of needle?

<p>True cut needle biopsy (A)</p> Signup and view all the answers

What is the main difference between excisional biopsy and incisional biopsy?

<p>Excisional biopsy involves the removal of the entire lesion, while incisional biopsy involves the removal of only a part of the lesion. (D)</p> Signup and view all the answers

In excisional biopsy, what is the recommended length of the incision in relation to its width for tension-free primary closure?

<p>3 times its width (B)</p> Signup and view all the answers

When is excisional biopsy the usual approach for small lesions (less than 1cm in diameter)?

<p>When the lesion is clinically benign (D)</p> Signup and view all the answers

What is the principle of excisional biopsy?

<p>Excision of the entire lesion with 2 to 3mm of normal appearing surrounding tissue (A)</p> Signup and view all the answers

What type of anesthesia is typically used around the lesion peripheries before excisional biopsy?

<p>Local anesthesia with vasoconstrictor (A)</p> Signup and view all the answers

Study Notes

Definition of Biopsy

  • Biopsy involves removing tissue from living organisms for various forms of analysis, including microscopic, chemical, and bacterial evaluations.

Indications for Biopsy

  • Confirming clinical impressions of lesions is a primary reason for biopsy.
  • Biopsy is recommended if inflammatory lesions do not respond to conservative treatments after 10-14 days.
  • It assists in determining definitive treatment for identified lesions.
  • Useful for diagnosing intraosseous lesions that are clinically or radiographically unidentifiable.
  • Helps in assessing abnormal tissues from the oral cavity, such as cysts and granulomas.

Contraindications for Biopsy

  • Should not be performed on inflammatory lesions of allergic, viral, fungal, or bacterial origin.
  • Biopsies are not suitable for normal anatomical or racial variants (e.g., linea alba, physiologic pigmentation).
  • Avoid biopsies in lesions resulting from recent trauma.
  • Care must be taken if lesions are near vital anatomical structures, including vascular, neural, or ductal components.
  • Lesions that resemble vascular formations, such as hemangiomas, caution against biopsy.
  • Incisional biopsies are generally discouraged for pigmented lesions.

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Description

"Biopsy Basics Quiz: Test Your Knowledge on Tissue Sampling and Analysis" Test your understanding of the definition, indications, and importance of biopsies in diagnosing and treating medical conditions with this informative quiz.

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