Squamous cell carcinoma of the skin surgery
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aditya Govindavarjhulla, M.B.B.S. [2], Raviteja Guddeti, M.B.B.S. [3] Roukoz A. Karam, M.D.[4]
Overview
Surgery is the mainstay of therapy for squamous cell carcinoma of the skin. Two types of Surgical methods exist which are Surgical excision and Moh's micrographic surgery.
Surgery
- Surgery is the mainstay of therapy for squamous cell carcinoma of the skin.
- However, consideration of function, cosmetic outcome, and patient preference may cause RT to be chosen as primary treatment to achieve optimal overall results. The algorithms list all of the therapies currently used to treat localized NMSC, including surgical techniques (i.e., curettage and electrodesiccation, excision with postoperative margin assessment [POMA], Mohs surgery or excision with “complete circumferential peripheral and deep-margin assessment” [CCPDMA]), RT, and superficial therapies.[1]
- Standard excision with wide margins
- Not the preferred method for surgical removal of high-risk squamous cell carcinoma of the skin[2]
- The European Dermatology Forum (EDF), the European Association of Dermato-Oncology (EADO), and the European Organization for Research and Treatment of Cancer (EORTC) suggest a margin of 10 mm for high-risk tumors[3]
- The NCCN guidelines do not specifically recommend a margin size for high-risk tumors removed with standard excision but state that it should be greater than 4 to 6 mm
- Surgeon must utilize a primary or delayed closure to allow for further excision with CCPDMA if margins are positive.
- Curettage and Electrodesiccation
- Excision With Postoperative Margin Assessment
- Regional Lymph Node Dissection
- Moh's micrographic surgery
- is particularly effective for high-risk localized cutaneous SCCs and SCCs located in cosmetically sensitive or critical areas because of its high cure rate and ability to spare normal tissue.
- 5 year cure rates for primary and recurrent tumors are 97% and 90% - 94% respectively. It is performed in the out patient setting and is well tolerated.[4]
- The procedure is performed in stages and the lesion is excised at an oblique angel along with a small rim of normal tissue. Histological assessment is then done and if the margins of the specimen test positive for tumor cells the locations are noted on Mohs map and a repeat procedure is done in the involved area itself and this process is repeated until the margins are clear of any tumor cells.
- This procedure is some what prolonged and take 2-4 hrs to complete. While Mohs surgery is frequently utilized and often considered the treatment of choice for squamous cell carcinoma of the skin, physicians have utilized the method for the treatment of squamous cell carcinoma of the mouth, throat, and neck.[5]
- Surgical excision with complete circumferential peripheral and deep margin assessment (CCPDMA)
- An alternative to Mohs surgery
- Involves the examination of the entire margin of the tissue specimen by a pathologist
- Histopathologic examination may be performed intraoperatively with frozen sections or with permanent sections and delayed wound closure
- Typically performed for advanced tumors that are best approached under general anesthesia due to large tumor size or great depth
- Standard excision with wide margins
- Electrosurgery
- Used for small lesions, well defined and located in non-critical areas of the body
- Cost-effective
- Gives favorable cosmetic results
- Low complication rate
- The procedure is performed by alternatively curetting away tumor and then electrodessicating the ulcer base with inclusion of a rim of normal surrounding skin.
- Cure rates of nearly 96% can be achieved with this treatment provide the lesion is small and well defined.
- This treatment should be avoided on the mid-face region.
- It is contraindicated in recurrent, large, poorly defined, and other high risk SCCs.
References
- ↑ Stratigos A, Garbe C, Lebbe C, Malvehy J, del Marmol V, Pehamberger H; et al. (2015). "Diagnosis and treatment of invasive squamous cell carcinoma of the skin: European consensus-based interdisciplinary guideline". Eur J Cancer. 51 (14): 1989–2007. doi:10.1016/j.ejca.2015.06.110. PMID 26219687.
- ↑ Skulsky SL, O'Sullivan B, McArdle O, Leader M, Roche M, Conlon PJ; et al. (2017). "Review of high-risk features of cutaneous squamous cell carcinoma and discrepancies between the American Joint Committee on Cancer and NCCN Clinical Practice Guidelines In Oncology". Head Neck. 39 (3): 578–594. doi:10.1002/hed.24580. PMID 27882625.
- ↑ Stratigos A, Garbe C, Lebbe C, Malvehy J, del Marmol V, Pehamberger H; et al. (2015). "Diagnosis and treatment of invasive squamous cell carcinoma of the skin: European consensus-based interdisciplinary guideline". Eur J Cancer. 51 (14): 1989–2007. doi:10.1016/j.ejca.2015.06.110. PMID 26219687.
- ↑ Drake LA, Dinehart SM, Goltz RW; et al. (1995). "Guidelines of care for Mohs micrographic surgery. American Academy of Dermatology". J. Am. Acad. Dermatol. 33 (2 Pt 1): 271–8. PMID 7622656. Unknown parameter
|month=ignored (help) - ↑ Gross, K.G., et al. Mohs Surgery, Fundamentals and Techniques. 1999, Mosby.