A craniofacial duplication or diprosopus is an unusual variant of conjoined twinning. The reported incidence is one in 180,000-15 million births and 35 cases have been reported till date. The phenotype is wide, with the partial duplication of a few facial structures to complete dicephalus. A complete duplication is associated with a high incidence of anomalies in the central nervous system, cardiovascular system, gastrointestinal system and the respiratory system, whereas no major anomalies are found in the infants with a partial duplication. A term baby with the features of a craniofacial duplication has been described, with the proposed theories on embryogenesis and a brief review of the literature.
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http://dx.doi.org/10.7860/JCDR/2013/5658.3395 | DOI Listing |
Clin Oral Investig
January 2025
Periodontology Unit, Centre for Host Microbiome Interactions, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK.
Objective: To evaluate the possible additional clinical benefit from autologous platelet concentrate (APC) treatment adjunct to non-surgical periodontal therapy (NSPT).
Methods: Electronic (MEDLINE/Embase/Cochrane/MedNar/CORE) and hand searches were conducted. Following studies selection, evidence tables were formed, and meta-analyses were performed for the following outcomes: probing pocket depth (PPD) reduction, clinical attachment level (CAL) gain, and bleeding on probing (BoP) reduction.
BMC Pregnancy Childbirth
January 2025
Department of Obstetric and Gynecological Ultrasound, The Second Affiliated Hospital of Dalian Medical University, Dalian, China.
Background: Diprosopus is one of the rarest anomalies. It typically manifests as bilateral alterations and often involves anomalies within the cranial structures. In this report, we present a case of a fetus with diprosopus diagnosed prenatally.
View Article and Find Full Text PDFJ Dent Res
December 2024
Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.
Both the upper and lower jaws develop from cranial neural crest cells (CNCCs) populating the first pharyngeal arch in all gnathostomes. Previous studies showed that the Edn1/Ednra-Dlx5/Dlx6-Hand2 signaling pathway is necessary for lower jaw formation and that ectopic expression of or throughout the CNCCs partly transformed the upper jaw to lower jaw structures, but the molecular mechanisms regulating upper jaw development remain unclear. Here we show that the basic helix-loop-helix transcription factor Twist1 is required for upper jaw development.
View Article and Find Full Text PDFInt J Pediatr Otorhinolaryngol
December 2024
Auricular Plastic and Reconstructive Surgery Center, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100144, China. Electronic address:
Background: Microtia is a prevalent congenital malformation, the precise etiology and pathogenesis of which remain elusive. Mutations in the non-coding region of the HMX1 gene have been implicated in isolated cases of microtia, emerging as a significant focus of contemporary research. Several pathogenic copy number variations (CNVs) proximal to the HMX1 gene have been documented in wild animal populations, whereas only a single large segmental duplication in this region has been identified in humans.
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