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3 Possible Causes for 11 Rib Pairs in Some Male Patients

  • Congenital Malformation of the Ribs

    All were at the level of the 1st lumbar vertebra, and some were rudimentary (Figure 1A-B). All of these patients were male.[jpma.org.pk] Moreover, 19(3.58%) patients had 11 pairs of ribs rather than 12 (Figure-1C), and 11(58%) of these 19 patients were male (Table-1).[jpma.org.pk]

  • X-Linked Dominant Chondrodysplasia Type Chassaing-Lacombe

    A rare genetic bone disorder with characteristics of chondrodysplasia, intrauterine growth retardation, hydrocephaly and facial dysmorphism in the affected males. The disease is severe and probably lethal in males, the clinical picture in females is less severe. The disease is due to a mutation in the histone[…][ncbi.nlm.nih.gov]

  • Campomelic Dysplasia

    ribs, hypoplastic scapulae, club feet, micrognathia, CLEFT PALATE , tracheobronchomalacia, and in some patients male-to-female sex reversal (SEX REVERSAL, GONADAL).[mesh.kib.ki.se] In most cases there is a curvature of the long bones especially the TIBIA with dimpling of the skin over the bowed areas, malformation of the pelvis and spine, 11 pairs of[mesh.kib.ki.se]

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