THE MERCK VETERINARY MANUALmultimedia

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  • Overview of Tumors of the Skin and Soft Tissues
  • Malignant tumor tentacles and surgical margins

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    Malignant tumor tentacles and surgical margins

    This image shows the octopus-like tentacles of many malignant skin tumors and how surgical margins are assessed. Dirty margins indicate the tumor is incompletely removed. Narrow, complete margins may give a false sense of security. Wide, complete margins indicate adequate surgical excision and is the gold standard. Confusion may arise when reports say margins are complete, but they may not be “adequate” or wide enough to prevent recurrence due to residual cancer cells left in the tumor bed.

    Courtesy of Dr. Alice Villalobos.

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