Amorphous calcium phosphate bladder stone: a case report
10.3760/cma.j.cn112330-20250608-00242
- VernacularTitle:膀胱无定型磷酸钙结石1例报告
- Author:
He GONG
1
;
Yijie XIE
1
;
Qi ZHENG
1
;
Zhiyuan SHI
1
;
Tao WANG
1
;
Peide BAI
1
;
Bin CHEN
1
Author Information
1. 厦门大学附属第一医院泌尿外科 厦门大学医学院，厦门 361003
- Publication Type:Journal Article
- Keywords:
Urinary stones;
Amorphous calcium phosphate;
Bladder stone
- From:
Chinese Journal of Urology
2025;46(10):784-785
- CountryChina
- Language:Chinese
-
Abstract:
Amorphous calcium phosphate（ACP）is a component of urinary stones，primarily forming mixed stones with calcium oxalate，while pure ACP stones are relatively rare. This article reports a case of a patient with an ACP bladder stone who was admitted due to progressive dysuria over 5 years，which had worsened in the past months. Upon admission，tPSA was 29.63 ng/ml. CT and enhanced MRI revealed multiple bladder stones and prostatic hyperplasia. The patient underwent ultrasound-guided prostate biopsy and transurethral cystolithotripsy with pneumatic lithotripsy. Postoperative infrared spectroscopy confirmed the stone composition as ACP，and prostatic adenocarcinoma was diagnosed by prostate biopsy pathology. Endocrine therapy was administered postoperatively，and follow-up imaging at 3 months showed no stone. This article presents the first reported case of an ACP bladder stone coexisting with prostate cancer，providing important clinical insights into the etiology of such stones and the rare local manifestations of prostate cancer.
