My father kidney calculi has been undergoing minimally invasive surgery for a week. Last night, the renal catheter and the wound suddenly bled again. How's it going? Is it serious? Should this be treated? Analysis of illness: kidney calculi refers to the stones that occur in renal calyx, renal pelvis and the junction of renal pelvis and ureter. Most of them are located in renal pelvis and calyx, and renal parenchymal stones are rare. Plain film shows that there are one or more dense shadows in the renal area, which are round, oval or obtuse triangle, and the density is high and uniform. The edge is smooth, but some are not smooth, showing mulberry shape. Kidney is the main part of urinary calculi. Stones in any other part may come from the kidney. Almost all ureteral stones come from the kidney, and kidney calculi is more likely to directly damage the kidney than stones in any other part. Therefore, early diagnosis and treatment are very important. According to the different composition of stones, kidney calculi can be divided into calcium oxalate stones, calcium phosphate stones, uric acid (urate) stones, magnesium ammonium phosphate stones, cystine stones and purine stones.

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