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Nocturia – the Cinderella of lower urinary tract symptoms

Nocturia is defined as waking during the night (at least once) to urinate. The important part of the definition relates to the necessity of sleep to precede the episode (although whether sleep must follow the episode is less clear). The...

Focal therapy trials

Men with localised prostate cancer have traditionally required whole gland treatment involving radical prostatectomy or radical radiation treatment, independent of disease location and size. Increasing evidence supports the use of active treatment only in those men diagnosed with prostate cancer...

Testicular tumour imaging

Testicular tumours are the most common tumour in young males with a peak incidence seen between 25 and 34 years [1]. The overall incidence is slowly increasing, although the exact reasons for this are uncertain, and there is a greater...

Balanitis xerotica obliterans

Balanitis xerotica obliterans (BXO) / lichen sclerosus of the male genitalia is a common cause of acquired phimosis, and was first described by Stuhmer in 1928 [1]. It is described in medical literature as a chronic inflammatory condition of unknown...

Male infertility

Definitions Infertility is the inability of a sexually active, non-contracepting couple to achieve spontaneous pregnancy in one year [1]. About 15% of couples do not achieve pregnancy within one year and seek medical treatment for infertility. Semen parameters are standardised...

Image-guided renal cryoablation

Introduction There has undoubtedly been a dramatic increase in the number of patients diagnosed with small renal masses in recent years [1]. The rapidly expanding use of CT has led to a large number of incidental diagnoses, but increasing longevity...

Emphysematous pyelonephritis: a review

Introduction Emphysematous pyelonephritis (EPN) is an acute, severe, necrotising, bacterial infection of the renal parenchyma and surrounding tissues, with gas in the renal parenchyma, collecting system or perinephric tissue. Although it is rare, it is potentially life threatening and early...

Medical statistics for urologists: part 2 – probability and hypothesis testing

Following on from Part 1 of this series (Part 3 available here), this article aims to build on other analytical techniques commonly used within medical research, focusing on simple examples. Probability and testing Before exploring hypothesis testing, it is vital...

Use of MRI in the evaluation of prostate cancer: part 2

Diffusion weighted imaging and contrast enhanced imaging Introduction Magnetic resonance imaging (MRI) is widely used in localisation, staging and post-treatment follow-up of prostate cancer. In the previous issue, we discussed the usefulness of MRI in depicting prostate anatomy and pairing...

Sperm selection techniques in assisted reproductive technologies: state of the ART?

Infertility is the inability to achieve pregnancy following one year of regular, unprotected intercourse (in the fertile phase of the menstrual cycle). Infertility is a common problem that affects between 7 and 15% of couples worldwide, with male factor infertility...

Small renal masses – diagnosis and management

Renal cancer is the eighth most common cancer in the UK and accounts for about 3% of all new cancer diagnoses [1]. The incidence rates are steadily rising, with the highest rates being in older men and women. This rise...