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A resection margin or surgical margin is the margin of apparently non-tumorous tissue around a tumor that has been surgically removed, called "resected", in surgical oncology. The resection is an attempt to remove a cancer tumor so that no portion of the malignant growth extends past the edges or margin of the removed tumor and surrounding tissue.
Complete circumferential peripheral and deep margin assessment (CCPDMA) is the preferred method for the removal of certain cancers, especially skin cancers. [ 1 ] [ 2 ] There are two forms of CCPDMA surgery: Mohs surgery and surgical excision coupled with margin assessment.
Mohs surgery is the gold standard method for obtaining complete margin control during removal of a skin cancer (complete circumferential peripheral and deep margin assessment - CCPDMA) using frozen section histology. [1] CCPDMA or Mohs surgery allows for the removal of a skin cancer with very narrow surgical margin and a high cure rate.
Many surgeons consider 0.5 cm (0.2 in) the standard of care for standard excision of melanoma-in-situ, [106] but 0.2 cm (0.1 in) margin might be acceptable for margin controlled surgery (Mohs surgery, or the double-bladed technique with margin control). The wide excision aims to reduce the rate of tumor recurrence at the site of the original ...
Surgical excision with a large safety margin is the main treatment for localized amelanotic melanoma. The suggested margin size for amelanotic melanoma is debatable since it varies according to the lesion's development, thickness, and invasion depth. [34] Guidelines from the Annals of Surgery, however, suggest that melanomas larger than 2 mm be ...
For skin cancer surgeries, most wounds are relatively small. After removal of the dressing, the wound can be cleaned by washing with clean soapy water, and should be kept moist. It is also suggested to apply prescribed antibiotic ointments or any other medications to the wound, and protect the scar formed.
In recognition of his contribution, the depth of invasion of melanoma is referred to by the eponym Breslow's depth. Subsequent studies confirmed and refined the role of depth of invasion in the prognosis of malignant melanoma. [2] [3] Currently, Breslow's depth is included in the AJCC staging guidelines for melanoma as a major prognostic factor.
In histopathology, radicality of tumor excisions is generally defined as the absence of tumor cells in a certain resection margin, with the specific margin width varying by tumor type and local guidelines. [3] A non-radical excision may require re-excision. [clarification needed]