In a retrospective study of 408 patients with Peyronie's disease 8 (1.9%) patients gave a positive family history for the condition. Sixty-three (15.4%) patients had a Dupuytren's contracture and trauma was considered to be an aetiological factor in 88 (21.5%) patients. One hundred and twenty-two (29.9%) patients had evidence of atherosclerosis and this is thought to be a factor in the pathogenesis of the disease. Peyronie's disease is not a single disease entity and is associated with many aetiological factors.

This study concerns 2043 male partners of infertile marriages who underwent testicular biopsy in the 28 years from 1955 to 1982. In a review of the pathological material carcinoma in situ (CIS) was diagnosed in 8 men (0.39%). Six of these men were later found to have invasive germ cell tumours; one has remained tumour-free and one is lost to follow-up. The implication of these findings in relation to the selection of patients for biopsy and the treatment of CIS when diagnosed is discussed.

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Malignant colorectal polyps are defined as polyps removed endoscopically where subsequent histology confirms the presence of carcinoma. Prevalence of malignancy in colorectal polyps ranges from 0.2% to 5% [1]. Incidence has increased secondary to greater use of diagnostic colonoscopy and the introduction of bowel screening programmes. Analysis of the first million tests from the English

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