A Case of Pure Matrix Ureteral Stone: A rare type of urinary calculi that may be overlooked
Journal Title: Sultan Qaboos University Medical Journal - Year 2018, Vol 1, Issue 4
Abstract
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.
Authors and Affiliations
Mohamed M. Elawdy, Samer El-Halwagy, Yasser A. Razek, Abeer R. Alsenani, Sultan Almazroui
Keywords
Related Articles
- EP ID EP37491
- DOI http://dx.doi.org/10.18295/squmj.2018.18.04.024
- Views 331
- Downloads 0
Tracheal Bronchus
Challenges of Childhood Uveitis
Chronic uveitis is a rare, but potentially sight-threatening disease. Te most common cause of chronic non-infectious uveitis is “idiopathic uveitisâ€. However, some systemic diseases are associated with chronic uveit...
A Practical Guide to the Genetic Family History
Stump Appendicitis following Laparoscopic Appendectomy
Stump appendicitis (SA) is a rare clinicopathologic entity characterised by inflammation of the appendiceal remnant after incomplete appendectomy. Te diagnosis is not routinely suspected in patients who have previousl...
Improving Vaginal Examinations Performed by Midwives
A vaginal examination (VE) is an essential part of midwifery care, and is routinely performed when assessing the progress of labour. As evidence shows that during labour women may fnd VEs unpleasant, embarrassing and s...