• Title/Summary/Keyword: agenesis

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Hypodontia Pattern and Genetic Association in Cleft Lip and Palate Patients (구순구개열 환자의 치아 선천결손 유형과 관련 유전자에 관한 고찰)

  • Ahn, Hyo-Won;Baek, Seung-Hak
    • Korean Journal of Cleft Lip And Palate
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    • v.10 no.2
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    • pp.81-88
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    • 2007
  • Cleft lip and palate (CLP) is one of the most prevalent congenital craniofacial anomalies. It has a significantly greater incidence of dental abnormalities in number, size, shape, and eruption of the teeth. Knout-out mouse model can identify several genes which play an important role in tooth agenesis. Since disruption of these genes has been confirmed to result in tooth agenesis in humans, CLP associated with hypodontia may be the best models for isolated tooth agenesis. According to the studies of dental abnormalities in CLP, the severity of dental defect is known to be influenced by the CLP phenotype. The cumulative data obtained from mouse and human genetic studies indicated that MSX1, PAX9 and AXIN2 are considered as candidate genes in non-syndromic hypodontia, while Shh, Pitx2, Irf6, p63 and EDA pathway genes are involved in syndromic one. We expect that genetic approach of CLP can offer the basis for tooth regeneration and be a new target in hypodontia therapy.

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MRI Findings of Obstructed Hemivagina and Ipsilateral Renal Agenesis (OHVIRA syndrome) with a Blind Megaureter: Case Report

  • Cho, Yun Hee;Sung, Deuk Jae;Han, Na Yeon;Park, Beom Jin;Kim, Min Ju;Sim, Ki Choon;Cho, Sung Bum
    • Investigative Magnetic Resonance Imaging
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    • v.19 no.3
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    • pp.196-199
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    • 2015
  • Obstructed hemivagina and ipsilateral renal anomaly (OHVIRA) syndrome is an uncommon congenital abnormality of the female urogenital tract characterized by the triad of uterine didelphys, obstructed hemivagina, and ipsilateral renal agenesis. A 13-year-old female presented with acute lower abdominal pain. Magnetic resonance imaging (MRI) revealed uterine didelphys, hematometrocolpos, obstructed hemivagina, and right ipsilateral agenesis, consistent with OHVIRA syndrome. Also, a well-defined mass with fluid signal intensity, mimicking adnexal neoplasm was seen in the right lower pelvic cavity adjacent to the posterior wall of the bladder. Vaginal septotomy and drainage of hematometrocolpos were done initially, but unilateral hysterectomy was later performed to relieve the patient's symptoms. The cystic mass in the right lower pelvic cavity was also excised and confirmed as a blind megaureter.

Gallbladder Agenesis in a Miniature Pinscher : Computed Tomographic and Ultrasonographic Features (담낭 무형성을 가진 미니어쳐 핀셔에서 컴퓨터단층촬영과 초음파 특징)

  • Kim, Seung-Gon;Kang, Min-Hee;Park, Hee-Myung
    • Journal of Veterinary Clinics
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    • v.30 no.2
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    • pp.111-114
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    • 2013
  • A 4-year-old spayed female Miniature Pinscher was presented with a 3.5-year history of elevated liver enzymes level. Continuous elevation of liver enzymes was found on repeated blood examinations and the dog was referred for further evaluation. The abdominal ultrasonography revealed that the gallbladder could not be visualized in any plane. The absence of gallbladder was suspected on ultrasonography. Computed tomography (CT) confirmed gallbladder agenesis (GBA). This is the first reported case of diagnosis of GBA in Miniature Pinscher by using CT.

Prevalence of Dental Anomalies in Patients with Non-syndromic Cleft Lip with or without Cleft Palate

  • Jisu Oh;Soyeon Bak;Hyeonheon Lee
    • Journal of the korean academy of Pediatric Dentistry
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    • v.51 no.1
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    • pp.66-79
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    • 2024
  • This study aimed to assess the prevalence and distribution pattern of dental anomalies in the permanent teeth of patients with non-syndromic cleft lip with or without cleft palate. Additionally, it aimed to compare differences in dental anomalies between cleft and non-cleft areas, considering gender and cleft phenotype. Panoramic radiographs of 164 patients diagnosed with non-syndromic orofacial clefts were retrospectively analyzed by a single examiner to confirm dental anomalies. The dental anomalies investigated included tooth agenesis, supernumerary teeth, microdontia, rotation, ectopic eruption, and enamel hypoplasia. Cleft phenotypes were categorized into 7 types based on medical and dental records. A significantly higher prevalence of supernumerary teeth was observed in males than females within non-cleft areas (p = 0.017), with no significant differences in other dental anomalies. In non-cleft area, patients with cleft palate exhibited a high prevalence of tooth agenesis (p < 0.0001) and microdontia (p = 0.012) compared to other cleft phenotypes. Maxillary incisor rotation was closely associated with adjacent tooth agenesis in unilateral cleft lip and palate cases (p = 0.034). This study suggests that the additional subphenotype based on dental anomalies in patients with orofacial cleft may serve as applicable clinical markers.

Computed Tomographic Features of Gallbladder Agenesis in a Golden Retriever

  • Yujung Lee;Dongjun Kim;Jeongin Choi;Youngwon Lee;Hojung Choi
    • Journal of Veterinary Clinics
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    • v.41 no.1
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    • pp.43-48
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    • 2024
  • A two-year-old, intact female Golden Retriever had previously been diagnosed with a portosystemic shunt (PSS) during an ultrasonographic examination at a local animal hospital. The serum biochemistry revealed elevated liver enzymes and bile acid levels. The abdominal radiographic examination revealed mild serosal detail loss and microhepatica, while abdominal ultrasonography revealed mild ascites and high-velocity flow to the caudal vena cava (CVC) suspected as a PSS. The gallbladder was not observed within the hepatic parenchyma during ultrasonography. Computed tomography (CT) revealed an absent gallbladder and dilation of the common bile duct (CBD). Dilations of the gastroduodenal, splenic, colic and renal veins were also observed. A dilated left phrenico-abdominal vein that entered the CVC was previously misinterpreted as a PSS on the ultrasound examination. Based on the imaging examinations, the dog was diagnosed with congenital gallbladder agenesis associated CBD dilation.

Rehabilitation of a patient with non-syndromic partial oligodontia

  • Kang, Hyeon-Goo;Huh, Yoon-Hyuk;Park, Chan-Jin;Cho, Lee-Ra
    • The Journal of Advanced Prosthodontics
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    • v.8 no.3
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    • pp.241-250
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    • 2016
  • Oligodontia is defined as a congenital tooth agenesis with the absence of six or more permanent teeth. This clinical report describes a patient with non-syndromic partial oligodontia, with retained deciduous teeth and the absence of 16 permanent teeth. Anterior esthetic problems were caused by interarch tooth size discrepancy, interdental space, aberrant tooth dimensions, and the absence of centric contacts of the anterior teeth. Prosthetic restoration after orthodontic and implant treatment was performed with a multi-disciplinary team approach. Favorable functional and esthetic results were obtained using a definitive prosthesis.

Herlyn-Werner-Wunderlich Syndrome: A Mini-review

  • Lee, Jiwon M.
    • Childhood Kidney Diseases
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    • v.22 no.1
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    • pp.12-16
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    • 2018
  • Herlyn-Werner-Wunderlich (HWW) syndrome is a rare congenital malformation syndrome that is characterized by a triad of uterine didelphys, blind hemivagina, and ipsilateral renal agenesis. There is a wide variety of phenotypic presentation which is recognized as a spectrum of disease rather than a separate entity. The exact incidence and pathogenesis of HWW syndrome are yet to be investigated. While this disease typically involves adolescent girls who present with abdominal pain or a pelvic mass that is secondary to hematocolpos, nowadays, a majority of potential patients with HWW are being prenatally screened for renal anomalies. Therefore, it is recommended to search for uterovaginal anomalies whenever a multicystic dysplastic kidney or the absence of a kidney is noted in a newborn female, and the role of pediatric nephrologists has become ever more important for early recognition of the disease.

A Case of 4q Deletion with Partial Agenesis of Corpus Callosum (뇌량의 부분 발육부전을 동반한 4q Deletion 1례)

  • Kang, Mi Na;Lim, In Suk;Kim, Byeong Eui;Chey, Myoung Jae;Kim, Sang Woo
    • Clinical and Experimental Pediatrics
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    • v.45 no.2
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    • pp.273-277
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    • 2002
  • Syndrome of 4q deletion is characterized by an abnormal shape of the skull, craniofacial dysmorphism, cardiovascular malformations, genitourinary defects, limb and digital anomalies, and developmental delay. We experienced a case of 4q interstitial deletion in a 2 day-old female neonate who showed short extremities, partial agenesis of corpus callosum and congenital heart defects. We report the case with a brief review of the literature.

Unilateral segmental odontomaxillary hypoplasia: an unusual case report

  • Pandey, Sushma;Pai, Keerthilatha M.;Nayak, Ajay G.;Vineetha, Ravindranath
    • Imaging Science in Dentistry
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    • v.41 no.1
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    • pp.39-42
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    • 2011
  • Facial asymmetry is not an uncommon occurrence in day to day dental practice. It can be caused by various etiologic factors ranging from facial trauma to serious hereditary conditions. Here, we report a rare case of non-syndromic facial asymmetry in a young female, who was born with this condition but was not aware of the progression of asymmetry. No relevant family history was recognized. She was also deficient in both deciduous and permanent teeth in the corresponding region of maxilla. Hence, the cause of this asymmetry was believed to be a segmental odontomaxillary hypoplasia of left maxilla accompanied by agenesis of left maxillary premolars and molars and disuse atrophy of corresponding facial musculature. This report briefly discussed the comparative features of segmental odontomaxillary hypoplasia, hemimaxillofacial dysplasia, and segmental odontomaxillary dysplasia and justified the differences between segmental odontomaxillary hypoplasia and the other two conditions.