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Diagnostic Tests – Excision Skin Biopsy
1. For which clinical scenario(s) is this diagnostic tool indicated?
An excision skin biopsy is a diagnostic technique in which the entire skin lesion is removed with full thickness, ideally in one intact specimen. It is indicated when there is high clinical suspicion for malignancy, particularly when accurate assessment of lesion depth, margins, and architecture is required for diagnosis and staging.
2. For which condition is this test always the right answer?
An excision biopsy is always the correct diagnostic test for suspected malignant melanoma. Melanoma requires complete removal of the lesion to allow proper evaluation of Breslow depth, which is critical for staging and prognosis. Partial biopsies (such as shave or punch biopsies) are inadequate because they may prevent accurate staging and risk underestimating tumor depth.
Key exam pearl: If melanoma is suspected, excision biopsy is the answer—always.
1. For which clinical scenario(s) is this diagnostic tool indicated?
An excision skin biopsy is a diagnostic technique in which the entire skin lesion is removed with full thickness, ideally in one intact specimen. It is indicated when there is high clinical suspicion for malignancy, particularly when accurate assessment of lesion depth, margins, and architecture is required for diagnosis and staging.
2. For which condition is this test always the right answer?
An excision biopsy is always the correct diagnostic test for suspected malignant melanoma. Melanoma requires complete removal of the lesion to allow proper evaluation of Breslow depth, which is critical for staging and prognosis. Partial biopsies (such as shave or punch biopsies) are inadequate because they may prevent accurate staging and risk underestimating tumor depth.
Key exam pearl: If melanoma is suspected, excision biopsy is the answer—always.
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