J Korean Med Sci.  2009 Aug;24(4):741-743. 10.3346/jkms.2009.24.4.741.

Dystrophic Calcification and Stone Formation on the Entire Bladder Neck After Potassium-titanyl Phosphate Laser Vaporization for the Prostate: A Case Report

• Jeon SW
• Park YK
• Chang SG

• KMID: 1779213
• DOI: http://doi.org/10.3346/jkms.2009.24.4.741

Abstract

Dystrophic calcification can be defined as a calcification that occurs in degenerated or necrotic tissue. It is associated with multiple clinical conditions, such as collagen vascular diseases. It involves the deposition of calcium in soft tissues despite no generalized disturbance in the calcium or phosphorus metabolism, and this is often seen at sites of previous inflammation or damage. Potassium-titanyl phosphate (KTP) laser vaporization of the prostate is safe and relatively bloodless procedure that results in a shorter catheterization, immediate symptomatic improvement, and less severe postoperative irritative symptoms. However, longer follow-up studies or reports about complications are lacking. Here in we report a case of dystrophic calcification and stone formation on the entire bladder neck after performing KTP laser vaporization of benign prostate hyperplasia. That was treated by lithotripsy and transurethral resection.

Keyword

Bladder Calculi; Prostatic Hyperplasia; Laser Therapy

MeSH Terms

Aged
Calcinosis/*diagnosis/pathology
Humans
Lasers, Solid-State/*adverse effects
Lithotripsy
Male
Prostatic Hyperplasia/*surgery
Urinary Bladder Calculi/*diagnosis/etiology/ultrasonography
Urinary Bladder Diseases/*diagnosis/etiology/ultrasonography

Figure

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  Fig. 1 The transrectal ultrasonography showed diffused calcification around the internal urethral sphincter.

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  Fig. 2 The stones were tightly lodged into the mucosa of the bladder neck. Transurethral resection was performed on the mucosal lodged stones (arrow) and calcified tissues.

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  Fig. 3 The stones were bright yellowish and total weight was 4 g.

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  Fig. 4 The histologic examination of the surgical specimen showed multiple dark basophilic calcifications (arrows) with a background of fibrotic stroma (Hematoxylin and eosin staining, original magnification: ×100).

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