Abstract:
BACKGROUND:There is large variability in the risk of sentinel lymph node (SLN) positivity among patients with intermediate thickness melanoma (ITM), with a subgroup of patients exhibiting a low risk of nodal disease. OBJECTIVE:To identify a group of patients with ITM for whom the risk of nodal disease is low. METHODS:A retrospective cohort of patients with ITM who underwent wide excision and nodal evaluation from 2010 to 2013 was identified by using the National Cancer Database and analyzed for the presence of nodal disease. Classification and regression tree analysis identified the most important factors used in a model to identify groups at low risk of SLN positivity. RESULTS:Of 23,440 patients, 14.7% were found to have nodal metastasis. On classification and regression tree analysis, patients older than 55 years without lymphovascular invasion and with a lesion thickness less than 1.7 mm had an SLN positivity rate of 4.9%. A model using age and thickness in nonulcerated patients identified a low-risk subgroup with a corresponding SLN positivity rate of 4.7%. LIMITATIONS:This was a retrospective study, and the model developed requires prospective validation. CONCLUSIONS:Patient age is an important factor in estimating risk of SLN in patients with ITM and may help identify patients without ulceration who may be safely spared an SLN biopsy.
journal_name
J Am Acad Dermatoljournal_title
Journal of the American Academy of Dermatologyauthors
Hanna AN,Sinnamon AJ,Roses RE,Kelz RR,Elder DE,Xu X,Pockaj BA,Zager JS,Fraker DL,Karakousis GCdoi
10.1016/j.jaad.2018.08.022subject
Has Abstractpub_date
2019-02-01 00:00:00pages
433-440issue
2eissn
0190-9622issn
1097-6787pii
S0190-9622(18)32476-9journal_volume
80pub_type
杂志文章abstract:BACKGROUND:Risk of cutaneous melanoma is increased among organ transplant recipients (OTRs) but outcome has rarely been evaluated. OBJECTIVE:We sought to assess melanoma characteristics and prognosis among OTRs versus the general population. METHODS:Using Swedish health care registers, we identified melanomas in OTRs...
journal_title:Journal of the American Academy of Dermatology
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abstract:BACKGROUND:There are subgroups of cutaneous squamous cell carcinoma (SCC) that have a higher risk for both regional and distant metastasis. When cutaneous SCC does metastasize, it typically spreads first to local nodal groups. Sentinel lymph node (SLN) localization has been successfully used to evaluate nodal metastasi...
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abstract::Unlike other mammals that molt hair seasonally, human beings have scalp hair follicles that exhibit an asynchronized pattern of cycling, with the growth and subsequent shedding of each hair being independent of others around it. This mosaic cycling behavior is established early and continues throughout life. We descri...
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journal_title:Journal of the American Academy of Dermatology
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journal_title:Journal of the American Academy of Dermatology
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journal_title:Journal of the American Academy of Dermatology
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