{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,29]],"date-time":"2025-10-29T19:11:14Z","timestamp":1761765074210,"version":"build-2065373602"},"reference-count":20,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2008,9,8]],"date-time":"2008-09-08T00:00:00Z","timestamp":1220832000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["bjui-journals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["BJU International"],"published-print":{"date-parts":[[2009,3]]},"abstract":"<jats:sec>\n                    <jats:title>OBJECTIVE<\/jats:title>\n                    <jats:p>To define incidence of renal matrix calculi in patients undergoing percutaneous nephrolithotomy (PCNL), and describe its clinical, laboratory and radiological features; we also studied the efficacy of PCNL in managing this rare entity.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>PATIENTS AND METHODS<\/jats:title>\n                    <jats:p>We retrospectively reviewed the records of 1368 PCNLs performed from April 2003 to March 2008, and identified 17 patients (mean age 44.3\u2003years; 11 women and six men) having matrix calculi. The patients\u2019 clinical, laboratory and radiological features were studied, and the perioperative outcome and follow\u2010up data analysed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>RESULTS<\/jats:title>\n                    <jats:p>Flank pain was commonest mode of presentation (15) followed by recurrent urinary tract infection (five). Pyuria was present in 14 patients and urine culture showed significant growth in 10. A plain X\u2010ray showed a small radio\u2010opaque calculus (10 renal units) and faint laminated calcification (four). Intravenous urography showed a filling defect and non\u2010visualized system in nine and five patients, respectively. Non\u2010contrast computed tomography and magnetic resonance urography diagnosed calculi in two and one patient, respectively, on haemodialysis. PCNL was abandoned initially in four patients due to pyonephrosis. The mean hospital stay was 3.4\u2003days and decrease in haemoglobin was 0.89\u2003g\/dL. One patient developed sepsis. Of 11 stones analysed, two were composed entirely of proteins and the remaining nine had crystalline components. At a mean follow\u2010up of 12.6\u2003months, no patients had recurrence of stone.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>CONCLUSIONS<\/jats:title>\n                    <jats:p>Matrix calculi occurred in 1.24% of patients undergoing PCNL. Although considered radiolucent, plain X\u2010ray showed a small radio\u2010opaque calculi or faint laminated calcifications in 10 of 17 patients. PCNL rendered patients stone\u2010free with minimum morbidity.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/j.1464-410x.2008.08065.x","type":"journal-article","created":{"date-parts":[[2008,9,8]],"date-time":"2008-09-08T08:56:15Z","timestamp":1220864175000},"page":"810-814","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["The management of renal matrix calculi: a single\u2010centre experience over 5\u2003years"],"prefix":"10.1111","volume":"103","author":[{"given":"Hemendra N.","family":"Shah","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shabbir","family":"Kharodawala","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiren S.","family":"Sodha","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amit A.","family":"Khandkar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sunil S.","family":"Hegde","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Manish B.","family":"Bansal","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2009,2,23]]},"reference":[{"key":"e_1_2_8_2_2","doi-asserted-by":"publisher","DOI":"10.1097\/01.ju.0000145868.18824.25"},{"key":"e_1_2_8_3_2","doi-asserted-by":"publisher","DOI":"10.1089\/end.1994.8.335"},{"key":"e_1_2_8_4_2","doi-asserted-by":"publisher","DOI":"10.1259\/0007-1285-48-574-807"},{"key":"e_1_2_8_5_2","doi-asserted-by":"crossref","first-page":"351","DOI":"10.1016\/S0022-5347(17)66024-5","article-title":"Crystal\u2010matrix interrelations in calculi","volume":"81","author":"Boyce WH","year":"1959","journal-title":"J Urol"},{"key":"e_1_2_8_6_2","doi-asserted-by":"publisher","DOI":"10.1038\/ki.1979.188"},{"key":"e_1_2_8_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-5347(17)66686-2"},{"key":"e_1_2_8_8_2","doi-asserted-by":"publisher","DOI":"10.1046\/j.1464-410x.1998.00594.x"},{"key":"e_1_2_8_9_2","doi-asserted-by":"publisher","DOI":"10.1097\/00004728-199605000-00015"},{"key":"e_1_2_8_10_2","doi-asserted-by":"crossref","first-page":"123","DOI":"10.1093\/oxfordjournals.ndt.a090828","article-title":"Matrix stones and acquired renal cysts in a non\u2010dialysed patient with chronic renal failure","volume":"10","author":"Branten AJ","year":"1995","journal-title":"Nephrol Dial Transplant"},{"key":"e_1_2_8_11_2","doi-asserted-by":"publisher","DOI":"10.1023\/A:1015222308253"},{"key":"e_1_2_8_12_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-5347(01)66995-7"},{"key":"e_1_2_8_13_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1442-2042.2005.01197.x"},{"key":"e_1_2_8_14_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1464-410X.1988.tb04384.x"},{"key":"e_1_2_8_15_2","doi-asserted-by":"publisher","DOI":"10.1259\/0007-1285-60-718-1028"},{"key":"e_1_2_8_16_2","doi-asserted-by":"publisher","DOI":"10.1097\/00004728-200309000-00021"},{"key":"e_1_2_8_17_2","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.163.2.3562838"},{"key":"e_1_2_8_18_2","doi-asserted-by":"publisher","DOI":"10.1046\/j.1464-410X.1996.00191.x"},{"key":"e_1_2_8_19_2","first-page":"405","article-title":"Multiple matrix lithiasis: integral endourological treatment","volume":"48","author":"Pereira Arias JG","year":"1995","journal-title":"Arch Esp Urol"},{"key":"e_1_2_8_20_2","doi-asserted-by":"publisher","DOI":"10.1097\/00005792-198301000-00004"},{"key":"e_1_2_8_21_2","first-page":"608","article-title":"Matrix lithiasis. 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