“…The symptom represents approximately 1-1.5% of all urological referrals and occurs in all age groups, with a mean age of 37 yr [199,200]. Several reasons of haemospermia have been acknowledged and can be classified into the following subcategories: idiopathic, congenital malformations, inflammation/infections, obstruction, malignancies (eg, genitourinary cancers: prostate and testis), vascular abnormalities, iatrogenic/trauma, and systemic causes (Supplementary Table 5) [201,202]. The risk of malignancy in patients presenting with haemospermia is approximately 3.5% (0-13.1%) [209,210].…”