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ONCC CBCN (CBCN) Practice Tests & Test Prep by Exam Edge

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ONCC CBCN Practice Test Features

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ONCC Certified Breast Care Nurse Sample Test

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If after excision, cancer cells are found at the edges of the excised piece of tissue, it is said to have which of the following?

Correct Answer:

positive margins
the correct answer to this question is "positive margins."

when a surgeon performs an excision of a cancerous tumor, the goal is to remove the tumor along with a margin of surrounding tissue that is free of cancer cells. this surrounding tissue is examined microscopically to ensure that no cancer cells are present. if cancer cells are found at the edges of the excised tissue, this indicates that not all the cancerous tissue was removed during the surgery. this condition is referred to as having "positive margins."

positive margins are a significant concern because they suggest that cancerous cells remain in the body, which increases the risk of the cancer recurring or spreading. therefore, the finding of positive margins usually leads to further treatment. this might involve additional surgical intervention to remove more tissue (re-excision), or it could involve other treatments such as radiation therapy or chemotherapy, depending on the type, location, and stage of the cancer.

in contrast, if no cancer cells are found at the edges of the tissue, it is described as having "negative margins" or "clear margins." negative or clear margins are typically a favorable outcome because they indicate that the cancer was likely removed completely.

the determination of margin status is a critical factor in the management of cancer and influences the treatment plan post-surgery. it helps in assessing the likelihood of completely eradicating the cancer and in planning any necessary additional treatments to reduce the risk of recurrence.