الملخص
Matrix stones are a rare form of urinary calculi with a low mineral content. We report a 63-year-old female patient who presented to the Sohar Hospital, Sohar, Oman, in 2018 with unexplained left flank pain and constipation. She had a history of chronic renal failure (CRF) and had previously undergone haemodialysis (HD). Non-contrast computed tomography (CT) did not show any renal or urinary stones. However, a left-sided ureteroscopy revealed a yellow-coloured stone that was soft in consistency occupying the proximal 5 cm section of the ureter. Many attempts at forceps extraction were required for complete clearance. A global quantitative composition analysis revealed the extracted stone to be composed entirely of protein-matrix material. Matrix stones require a high index of suspicion as they are sometimes radiolucent and cannot be visualised on CT scans. Risk factors include being female and a history of urinary tract infections, CRF and HD.
بيانات النشر
- المعرّف الرقمي
- 10.18295/squmj.2018.18.04.024
- المجلة
- مجلة جامعة السلطان قابوس الطبية, 18(4), e557-559
- الناشر
- جامعة السلطان قابوس
- وصول مفتوح
- وصول مفتوح ذهبي
- الترخيص
- CC BY-ND 4.0
اقتبس هذه المقالة
APA 7
Elawdy, M. M., El-Halwagy, S., Alsenani, Y. A., R., A., & Almazroui, S. (2025). A Case of Pure Matrix Ureteral Stone: A rare type of urinary calculi that may be overlooked. Sultan Qaboos University Medical Journal, 18(4), e557-559. https://doi.org/10.18295/squmj.2018.18.04.024
MLA 9
Elawdy, Mohamed M., et al. "A Case of Pure Matrix Ureteral Stone: A rare type of urinary calculi that may be overlooked." Sultan Qaboos University Medical Journal, vol. 18, no. 4, 2025, pp. e557-559. https://doi.org/10.18295/squmj.2018.18.04.024.
شيكاغو (المؤلف–التاريخ)
Elawdy, Mohamed M., Samer El-Halwagy, Yasser A. Alsenani, Abeer R., and Sultan Almazroui. 2025. "A Case of Pure Matrix Ureteral Stone: A rare type of urinary calculi that may be overlooked." Sultan Qaboos University Medical Journal 18 (4): e557-559. https://doi.org/10.18295/squmj.2018.18.04.024.
هارفارد
Elawdy, M. M., El-Halwagy, S., Alsenani, Y. A., R., A. and Almazroui, S. (2025) 'A Case of Pure Matrix Ureteral Stone: A rare type of urinary calculi that may be overlooked', Sultan Qaboos University Medical Journal, 18(4), pp. e557-559. doi:10.18295/squmj.2018.18.04.024.
فانكوفر
Elawdy MM, El-Halwagy S, Alsenani YA, R. A, Almazroui S. A Case of Pure Matrix Ureteral Stone: A rare type of urinary calculi that may be overlooked. Sultan Qaboos University Medical Journal. 2025;18(4):e557-559. doi:10.18295/squmj.2018.18.04.024
IEEE
M. M. Elawdy, S. El-Halwagy, Y. A. Alsenani, A. R., and S. Almazroui, "A Case of Pure Matrix Ureteral Stone: A rare type of urinary calculi that may be overlooked," Sultan Qaboos University Medical Journal, vol. 18, no. 4, pp. e557-559, 2025, doi: 10.18295/squmj.2018.18.04.024.