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Nearly 1 in 4 Skin Biopsies Are Melanocytic Lesions

JAMA Dermatol; ePub 2017 Nov 1; Lott, et al

Approximately one-quarter of skin biopsies resulted in diagnoses of melanocytic proliferations, a recent study found. Researchers conducted a natural language processing (NLP)-based analysis of electronic medical record (EMR) pathology reports of adult patients who underwent skin biopsies at a large integrated health care delivery system in the US Pacific Northwest from January 1, 2007, through December 31, 2012. A total of 80,368 skin biopsies, performed on 47,529 patients, were examined. They found:

  • Nearly 1 in 4 skin biopsies were of melanocytic lesions (23%; n=18,715), which were distributed according to MPATH-Dx categories as follows: class I, 83.1% (n=15,558); class II, 8.3% (n=1,548); class III, 4.5% (n=842); class IV, 2.2% (n=405); and class V, 1.9% (n=362).
  • These data provide the first population-based estimates across the spectrum of melanocytic lesions, ranging from benign through dysplastic to malignant.
Citation:

Lott JP, Boudreau DM, Barnhill RL, et al. Population-based analysis of histologically confirmed melanocytic proliferations using natural language processing. [Published online ahead of print November 1, 2017]. JAMA Dermatol. doi:10.1001/jamadermatol.2017.4060.

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