Pediatric urolithiasis in Morocco: Composition of 432 urinary calculi analyzed by infrared spectroscopy
Incidence of pediatric urolithiasis is decreasing in most developing countries where endemic bladder stones are less prevalent than in the past years. In parallel, stone composition has changed. Only few data are available in North Africa, except for Tunisia. We report stone composition in the Moroc...
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| Veröffentlicht in: | Progrès en urologie (Paris) 2019-03, Vol.29 (3), p.173-182 |
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| description | Incidence of pediatric urolithiasis is decreasing in most developing countries where endemic bladder stones are less prevalent than in the past years. In parallel, stone composition has changed. Only few data are available in North Africa, except for Tunisia. We report stone composition in the Moroccan pediatric population.
Composition of 432 stones from children (302 boys, 130 girls) was determined by infrared spectroscopy. The samples were collected during the period 1999–2016. Stone morphology, which is an important aspect for etiology was determined by examination of each stone under a stereomicroscope. Stone composition was compared to patients’ age and gender.
The global male-to-female ratio was 2.32. Regarding stone composition, calcium oxalate was the main component in 51.6% of the stones, followed by struvite (18.1%), ammonium urate (9.5%) and carbapatite (9%). Significant differences were found between males and females: calcium oxalate accounted for 72.3% of stones in girls and 42.7% in boys (P |
| doi_str_mv | 10.1016/j.purol.2019.02.002 |
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Composition of 432 stones from children (302 boys, 130 girls) was determined by infrared spectroscopy. The samples were collected during the period 1999–2016. Stone morphology, which is an important aspect for etiology was determined by examination of each stone under a stereomicroscope. Stone composition was compared to patients’ age and gender.
The global male-to-female ratio was 2.32. Regarding stone composition, calcium oxalate was the main component in 51.6% of the stones, followed by struvite (18.1%), ammonium urate (9.5%) and carbapatite (9%). Significant differences were found between males and females: calcium oxalate accounted for 72.3% of stones in girls and 42.7% in boys (P<10−6); conversely, struvite was more frequent in boys than in girls (22.2 vs 8.5%, P<10−4). The same was found for calcium phosphate stones (11.9% in boys; 4.6% in girls, P<0.05). Stone morphology helped us for detecting several pathological conditions: type Ic whewellite stones, as a marker for primary hyperoxaluria, was found in 17.6% of stones and type IIId ammonium urate stones, suggestive for infectious diarrhea, was identified in 20.1% of all stones.
This is the largest series of pediatric stones in Morocco studied by infrared analysis and morphological examination.
3.
L’incidence de la lithiase pédiatrique a diminué dans la plupart des pays en développement avec une réduction des lithiases vésicales endémiques. Parallèlement, la nature des calculs évolue. Peu de données existent dans le Maghreb en dehors de la Tunisie. Nous rapportons l’expérience marocaine à partir de 432 calculs d’enfants.
L’analyse morpho-constitutionnelle des calculs de 302 garçons et 130 filles âgés de 0 à 17 ans a été réalisée par un examen stéréomicroscopique et analyse infrarouge. Les calculs ont été collectés entre 1999 et 2016. Les résultats ont été analysés selon le sexe et l’âge des enfants.
Le rapport garçons/filles était de 2,32. L’oxalate de calcium était le composant principal de 51,6 % des calculs, suivi par la struvite (18,1 %), l’urate d’ammonium (9,5 %) et la carbapatite (9 %). L’oxalate de calcium représentait 72,3 % des calculs chez les filles et 42,7 % chez les garçons (p<10−6) ; à l’inverse, la struvite était plus fréquente chez les garçons que chez les filles (22,2 vs 8,5 %, p < 10−4). De même, pour les calculs phosphocalciques (11,9 % chez les garçons, 4,6 % chez les filles; p<0,05). La morphologie des calculs a permis de détecter plusieurs pathologies lithogènes : les calculs de whewellite de type Ic, marqueur des hyperoxaluries primaires, ont été observés dans 17,6 % des cas ; les calculs d’urate d’ammonium de morphologie IIId, suggérant des diarrhées infectieuses, ont été identifiés dans 20,1 % des cas.
Cette étude représente la plus grande série de calculs pédiatriques analysés au plan morphoconstitutionnel au Maroc.
3.]]></description><identifier>ISSN: 1166-7087</identifier><identifier>DOI: 10.1016/j.purol.2019.02.002</identifier><identifier>PMID: 30819635</identifier><language>eng</language><publisher>France: Elsevier Masson SAS</publisher><subject>Ammonium urate ; Calcium oxalate ; Composition des calculs ; Lithiase pédiatrique ; Maroc ; Morocco ; Morphologie des calculs ; Oxalate de calcium ; Pediatric urolithiasis ; Stone composition ; Stone morphology ; Struvite ; Urate d’ammonium</subject><ispartof>Progrès en urologie (Paris), 2019-03, Vol.29 (3), p.173-182</ispartof><rights>2019 Elsevier Masson SAS</rights><rights>Copyright © 2019 Elsevier Masson SAS. All rights reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c404t-977d29f8d5dd21477bf95790e0a744879897b6d6a4fe39f7efe82de0f32181253</citedby><cites>FETCH-LOGICAL-c404t-977d29f8d5dd21477bf95790e0a744879897b6d6a4fe39f7efe82de0f32181253</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.purol.2019.02.002$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/30819635$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Meiouet, F.</creatorcontrib><creatorcontrib>El Kabbaj, S.</creatorcontrib><creatorcontrib>Daudon, M.</creatorcontrib><title>Pediatric urolithiasis in Morocco: Composition of 432 urinary calculi analyzed by infrared spectroscopy</title><title>Progrès en urologie (Paris)</title><addtitle>Prog Urol</addtitle><description><![CDATA[Incidence of pediatric urolithiasis is decreasing in most developing countries where endemic bladder stones are less prevalent than in the past years. In parallel, stone composition has changed. Only few data are available in North Africa, except for Tunisia. We report stone composition in the Moroccan pediatric population.
Composition of 432 stones from children (302 boys, 130 girls) was determined by infrared spectroscopy. The samples were collected during the period 1999–2016. Stone morphology, which is an important aspect for etiology was determined by examination of each stone under a stereomicroscope. Stone composition was compared to patients’ age and gender.
The global male-to-female ratio was 2.32. Regarding stone composition, calcium oxalate was the main component in 51.6% of the stones, followed by struvite (18.1%), ammonium urate (9.5%) and carbapatite (9%). Significant differences were found between males and females: calcium oxalate accounted for 72.3% of stones in girls and 42.7% in boys (P<10−6); conversely, struvite was more frequent in boys than in girls (22.2 vs 8.5%, P<10−4). The same was found for calcium phosphate stones (11.9% in boys; 4.6% in girls, P<0.05). Stone morphology helped us for detecting several pathological conditions: type Ic whewellite stones, as a marker for primary hyperoxaluria, was found in 17.6% of stones and type IIId ammonium urate stones, suggestive for infectious diarrhea, was identified in 20.1% of all stones.
This is the largest series of pediatric stones in Morocco studied by infrared analysis and morphological examination.
3.
L’incidence de la lithiase pédiatrique a diminué dans la plupart des pays en développement avec une réduction des lithiases vésicales endémiques. Parallèlement, la nature des calculs évolue. Peu de données existent dans le Maghreb en dehors de la Tunisie. Nous rapportons l’expérience marocaine à partir de 432 calculs d’enfants.
L’analyse morpho-constitutionnelle des calculs de 302 garçons et 130 filles âgés de 0 à 17 ans a été réalisée par un examen stéréomicroscopique et analyse infrarouge. Les calculs ont été collectés entre 1999 et 2016. Les résultats ont été analysés selon le sexe et l’âge des enfants.
Le rapport garçons/filles était de 2,32. L’oxalate de calcium était le composant principal de 51,6 % des calculs, suivi par la struvite (18,1 %), l’urate d’ammonium (9,5 %) et la carbapatite (9 %). L’oxalate de calcium représentait 72,3 % des calculs chez les filles et 42,7 % chez les garçons (p<10−6) ; à l’inverse, la struvite était plus fréquente chez les garçons que chez les filles (22,2 vs 8,5 %, p < 10−4). De même, pour les calculs phosphocalciques (11,9 % chez les garçons, 4,6 % chez les filles; p<0,05). La morphologie des calculs a permis de détecter plusieurs pathologies lithogènes : les calculs de whewellite de type Ic, marqueur des hyperoxaluries primaires, ont été observés dans 17,6 % des cas ; les calculs d’urate d’ammonium de morphologie IIId, suggérant des diarrhées infectieuses, ont été identifiés dans 20,1 % des cas.
Cette étude représente la plus grande série de calculs pédiatriques analysés au plan morphoconstitutionnel au Maroc.
3.]]></description><subject>Ammonium urate</subject><subject>Calcium oxalate</subject><subject>Composition des calculs</subject><subject>Lithiase pédiatrique</subject><subject>Maroc</subject><subject>Morocco</subject><subject>Morphologie des calculs</subject><subject>Oxalate de calcium</subject><subject>Pediatric urolithiasis</subject><subject>Stone composition</subject><subject>Stone morphology</subject><subject>Struvite</subject><subject>Urate d’ammonium</subject><issn>1166-7087</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp9kDtP7DAQRl1wBVzgFyAhl7fZMHYejpEorla8JBAUUFteewxeZeNgJ0jLr8fLAiXVTHG-eRxCjhkUDFhzuiyGKYau4MBkAbwA4Dtkn7GmmQloxR75m9ISoAFo5S7ZK6FlsinrffL8gNbrMXpDNwP8-OJ18on6nt6FGIwJZ3QeVkNIfvShp8HRquSZ9b2Oa2p0Z6bOU93rbv2Oli7WOeqijrlPA5oxhmTCsD4kf5zuEh591QPydHnxOL-e3d5f3cz_385MBdU4k0JYLl1ra2s5q4RYOFkLCQhaVFUrZCvForGNrhyW0gl02HKL4ErOWsbr8oD8284dYnidMI1q5ZPBrtM9himpjImaSykgo-UWNfnGFNGpIfpV_koxUBuraqk-raqNVQVcZas5dfK1YFqs0P5kvpVm4HwLYH7zzWNUyXjsTfYcsw9lg_91wQeJPIzp</recordid><startdate>20190301</startdate><enddate>20190301</enddate><creator>Meiouet, F.</creator><creator>El Kabbaj, S.</creator><creator>Daudon, M.</creator><general>Elsevier Masson SAS</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20190301</creationdate><title>Pediatric urolithiasis in Morocco: Composition of 432 urinary calculi analyzed by infrared spectroscopy</title><author>Meiouet, F. ; El Kabbaj, S. ; Daudon, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c404t-977d29f8d5dd21477bf95790e0a744879897b6d6a4fe39f7efe82de0f32181253</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Ammonium urate</topic><topic>Calcium oxalate</topic><topic>Composition des calculs</topic><topic>Lithiase pédiatrique</topic><topic>Maroc</topic><topic>Morocco</topic><topic>Morphologie des calculs</topic><topic>Oxalate de calcium</topic><topic>Pediatric urolithiasis</topic><topic>Stone composition</topic><topic>Stone morphology</topic><topic>Struvite</topic><topic>Urate d’ammonium</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Meiouet, F.</creatorcontrib><creatorcontrib>El Kabbaj, S.</creatorcontrib><creatorcontrib>Daudon, M.</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Progrès en urologie (Paris)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Meiouet, F.</au><au>El Kabbaj, S.</au><au>Daudon, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Pediatric urolithiasis in Morocco: Composition of 432 urinary calculi analyzed by infrared spectroscopy</atitle><jtitle>Progrès en urologie (Paris)</jtitle><addtitle>Prog Urol</addtitle><date>2019-03-01</date><risdate>2019</risdate><volume>29</volume><issue>3</issue><spage>173</spage><epage>182</epage><pages>173-182</pages><issn>1166-7087</issn><abstract><![CDATA[Incidence of pediatric urolithiasis is decreasing in most developing countries where endemic bladder stones are less prevalent than in the past years. In parallel, stone composition has changed. Only few data are available in North Africa, except for Tunisia. We report stone composition in the Moroccan pediatric population.
Composition of 432 stones from children (302 boys, 130 girls) was determined by infrared spectroscopy. The samples were collected during the period 1999–2016. Stone morphology, which is an important aspect for etiology was determined by examination of each stone under a stereomicroscope. Stone composition was compared to patients’ age and gender.
The global male-to-female ratio was 2.32. Regarding stone composition, calcium oxalate was the main component in 51.6% of the stones, followed by struvite (18.1%), ammonium urate (9.5%) and carbapatite (9%). Significant differences were found between males and females: calcium oxalate accounted for 72.3% of stones in girls and 42.7% in boys (P<10−6); conversely, struvite was more frequent in boys than in girls (22.2 vs 8.5%, P<10−4). The same was found for calcium phosphate stones (11.9% in boys; 4.6% in girls, P<0.05). Stone morphology helped us for detecting several pathological conditions: type Ic whewellite stones, as a marker for primary hyperoxaluria, was found in 17.6% of stones and type IIId ammonium urate stones, suggestive for infectious diarrhea, was identified in 20.1% of all stones.
This is the largest series of pediatric stones in Morocco studied by infrared analysis and morphological examination.
3.
L’incidence de la lithiase pédiatrique a diminué dans la plupart des pays en développement avec une réduction des lithiases vésicales endémiques. Parallèlement, la nature des calculs évolue. Peu de données existent dans le Maghreb en dehors de la Tunisie. Nous rapportons l’expérience marocaine à partir de 432 calculs d’enfants.
L’analyse morpho-constitutionnelle des calculs de 302 garçons et 130 filles âgés de 0 à 17 ans a été réalisée par un examen stéréomicroscopique et analyse infrarouge. Les calculs ont été collectés entre 1999 et 2016. Les résultats ont été analysés selon le sexe et l’âge des enfants.
Le rapport garçons/filles était de 2,32. L’oxalate de calcium était le composant principal de 51,6 % des calculs, suivi par la struvite (18,1 %), l’urate d’ammonium (9,5 %) et la carbapatite (9 %). L’oxalate de calcium représentait 72,3 % des calculs chez les filles et 42,7 % chez les garçons (p<10−6) ; à l’inverse, la struvite était plus fréquente chez les garçons que chez les filles (22,2 vs 8,5 %, p < 10−4). De même, pour les calculs phosphocalciques (11,9 % chez les garçons, 4,6 % chez les filles; p<0,05). La morphologie des calculs a permis de détecter plusieurs pathologies lithogènes : les calculs de whewellite de type Ic, marqueur des hyperoxaluries primaires, ont été observés dans 17,6 % des cas ; les calculs d’urate d’ammonium de morphologie IIId, suggérant des diarrhées infectieuses, ont été identifiés dans 20,1 % des cas.
Cette étude représente la plus grande série de calculs pédiatriques analysés au plan morphoconstitutionnel au Maroc.
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| subjects | Ammonium urate Calcium oxalate Composition des calculs Lithiase pédiatrique Maroc Morocco Morphologie des calculs Oxalate de calcium Pediatric urolithiasis Stone composition Stone morphology Struvite Urate d’ammonium |
| title | Pediatric urolithiasis in Morocco: Composition of 432 urinary calculi analyzed by infrared spectroscopy |
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