Pustular psoriasis following treatment for multiple sclerosis.

We describe the case and treatment of a patient with multiple sclerosis who developed pustular psoriasis following treatment with teriflunomide. There are two other cases of pustular psoriasis induced by teriflunomide in the literature, and in cases where patients are not responding to conventional treatment, accelerated elimination therapy should be considered.

Renal cell carcinoma needle biopsy: sowing the seed for later complications?

Pathological examination of a radical nephrectomy for papillary renal cell carcinoma showed tumour present within the perinephric fat, with a morphology indicative of iatrogenic tumour cell tracking caused by previous biopsy of the mass. This is a rare complication of percutaneous biopsy, and as this procedure is becoming more common in investigating renal masses, it is important that the professionals are aware of the potential risks posed by renal mass biopsy.