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The introduction of new GP contracts in April 1990 incorporated a financial incentive to undertake minor surgical procedures. Previous reports have noted large increases in the number of GP-derived skin specimens after April 1990. Our present study intended to address whether similar changes have occurred in Grampian Region as well as, more specifically, noting whether there have been changes in the quality of practice following the 1st April 1990. A retrospective study of skin biopsies removed by general practitioners in Grampian Region was undertaken. Cases were selected from four periods of six months (1st April to end of September) in 1987, 1988, 1989 and 1990. All skin specimens sent by general practitioners to the Department of Pathology, Aberdeen Royal Infirmary, were included. Following April 1990 there was a two-fold increase in skin specimen numbers--an increase significantly greater than increases observed over previous years (p < 0.01). Of particular note was the contribution made to this increase by Aberdeen City GPs whose contribution rose five-fold (p < 0.0001). Non-benign lesions (ie malignant plus carcinoma-in-situ-) represented 6% of lesions excised. A non-benign clinical diagnosis or an indication of suspicion was written on only one third of request forms for histopathologically diagnosed non-benign lesions. The proportion of histologically incompletely excised lesions rose over the four years (p < 0.01); moreover the increase in total numbers of lesions resulted in a striking increase in the actual numbers of incompletely excised lesions after April 1990.

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