Embryological mechanisms of maldescent and tumourigenesis, J.M. Hutson et al; pathology and cytogenetics of germ cell tumours in children, F. Raafat; contralateral biopsies in patients with testicular germ cell tumour - the German experience, K.-P. Dieckmann and V. Loy; molecular genetics in germ cell tumours, R.S.K. Chaganti et al; the Wilms' tumour 1 gene in testicular cancer patients, K. Heimdal et al; chemotherapy of seminoma, A. Horwich; good risk chemotherapy trials for patients with advanced germ cell tumours - the MSKCC experience, T.A. Murray et al; prognostic factors in disseminated non-seminomatous testicular cancer, R. de Wit et al; management of central nervous system metastases in patients with disseminated germ cell tumours, C.R. Nichols; salvage chemotherapy and autologous bone marrow transplantation - 9-year experience at Institut Gustave-Roussy, S. Culine et al; late side effects in patients treated for testicular cancer, N. Aass and S.D. Fossa; is there any relationship between vasectomy and testicular cancer?, I. Appleyard; germ cell tumours and carcinoma in situ of the testis detected by fine needle biopsy, J.O. Grosse et al.