Transurethral resection of the prostate (TURP) is just one of the numerous options available in the modern treatment of benign prostatic hyperplasia (BPH), but it's still now the "gold standard". Absorption of irrigating fluid is the greatest complication and results in clinical manifestations in 2% of the TURPs performed. There is a statistically significant relationship between gland size and the total volume of irrigant absorbed. To reduce this absorption Reuter introduced suprapubic trocar drainage to obtain the same results from both the small and the large prostates. Operating time, in fact, is reduced because, also at the same time, this large tube drains both irrigation fluid and prostatic chips.