Publications by authors named "Yueh-Chin Cheng"

Objective: Anophthalmia is an extreme form on the spectrum of anophthalmia-microphthalmia (A/M) syndrome. Most articles define fetal microphthalmia by an ocular diameter (OD) less than fifth percentile. Diagnosis of fetal microphthalmia using only orbital measurements such as interocular distance (IOD), and OD may neglect the presence or morphology of the fetal lens, hence failing to identify abnormalities of the fetal globe.

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Article Synopsis
  • A case of fetal congenital mesoblastic nephroma (CMN) was identified via ultrasound at 32 weeks of gestation, leading to the neonate undergoing a left radical nephrectomy postpartum, which confirmed the diagnosis.
  • Multiple imaging techniques, including ultrasound, CT, and MRI, were utilized to better understand the tumor’s origin and its relationship to the kidney.
  • This is reportedly the first documented case of fetal CMN diagnosed in the third trimester, resulting in the live birth of a baby in Taiwan.
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Objective: McKusick-Kaufman syndrome (MKS) is a rare autosomal recessive syndrome characterized by hydrometrocolpos (HMC) and postaxial polydactyly (PAP). It is very difficult to diagnose MKS prenatally because of overlapping manifestations and associated anomalies with other syndromes. Herein, we present a case of MKS with prenatal ultrasound illustrating a fetal abdominal cystic mass.

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Objective: To determine the absent side of a single umbilical artery (SUA) and to evaluate whether associated anomalies are related to the side of the missing artery in a Taiwanese population.

Materials And Methods: We retrospectively studied SUA fetuses from our computer database of fetal ultrasound in a tertiary medical center in Southern Taiwan. All cases were diagnosed as SUA prenatally using conventional scanners of two- and three-dimensional (2D and 3D, respectively) ultrasound, as well as color, power, and high-definition Doppler.

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Unlabelled: An omphalocele, a fetal abdominal defect, is a very important congenital anomaly. Prenatal diagnosis of fetal omphalocele is crucial to clinical management.

Objective: To investigate the accuracy of prenatal diagnosis for fetal omphalocele, we undertook a retrospective and consecutive analysis of our ultrasound database between January 1994 and December 2011.

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Objective: In order to compare the trends and improvements of prenatal diagnosis of gastroschisis, we herein retrospectively reviewed our cases of fetal gastroschisis detected by three-dimensional ultrasound (3D US) between the two centuries.

Materials And Methods: We reviewed our computer database of prenatal diagnosis on gastroschisis in National Cheng Kung University Hospital from October 1994 to November 2011. All the fetuses were initially scanned by two-dimensional (2D) US to locate the region of interest (ROI).

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Objective: Congenital cystic adenomatoid malformation of the lung (CCAML) is one of the most common lung lesions diagnosed prenatally. In order to compare the trends and improvements of prenatal diagnosis of CCAML, we herein retrospectively reviewed our cases of fetal CCAML detected by three-dimensional ultrasound (3-D US) between two centuries.

Materials And Methods: We reviewed our computer database of prenatal diagnosis of CCAML in National Cheng Kung University Hospital from October 1994 to November 2011.

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Objectives: The accuracy of ultrasound (US) measurements is operator dependent. In order to decrease the operator-dependent errors in estimated fetal weight (EFW), a model selection analysis was undertaken to select significant compensation weighting factors on ultrasonographic parameters to support artificial neural network (ANN), and thus to enhance the accuracy of fetal weight estimation.

Materials And Methods: In total, 2127 singletons were examined by prenatal US within 3 days before delivery for ANN development, and another 100 cases were selected from new operators for evaluation.

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Objective: To demonstrate the usefulness of three-dimensional (3D) ultrasound in prenatal diagnosis of fetal multicystic dysplastic kidney (MCDK) disease.

Methods: In our previous study, we demonstrated that using 3D ultrasound in conjunction with traditional two-dimensional (2D) ultrasound can facilitate the diagnosis of MCDK. In this study, we followed all the MCDK cases diagnosed in our center in the recent decade (from 2002 to 2011) and compared the results with the data collected in the prior decade (from 1995 to 2002).

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Objectives: A novel analysis was undertaken to select a significant ultrasonographic parameter (USP) for classifying fetuses to support artificial neural network (ANN), and thus to enhance the accuracy of fetal weight estimation.

Methods: In total, 2127 singletons were examined by prenatal ultrasound within 3 days before delivery. First, correlation analysis was used to determine a significant USP for fetal grouping.

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Objective: Fetal osteogenesis imperfecta (OI) is a heterogeneous group of collagen disorders characterized by bone fragility, blue sclerae, deafness, and dentinogenesis imperfecta. Ultrasonography is acknowledged as a reliable diagnostic modality for the prenatal diagnosis of OI, especially type II. In the past, two-dimensional (2D) ultrasound (US) has been applied as the mainstay of prenatal diagnosis of OI.

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Objective: Glucosamine (GlcN) is a popular nutritional supplement used to treat osteoarthritis in postmenopausal women. Postmenopausal women are at higher risk of type 2 diabetes mellitus and metabolic syndrome because of ovarian hormone deficiency. We used ovariectomized (OVX) rats as the model to investigate whether GlcN would induce insulin resistance (IR) in OVX rats and the underlying mechanisms.

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Purpose: Fetal thanatophoric dysplasia (TD) is a lethal skeletal dysplasia. Therefore, antenatal diagnosis of TD is mandatory in routine obstetrical care. However, because TD is relatively rare, prenatal detection is not an easy task.

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This report presents the case of a 7-year-old girl with gonadotrophin-independent precocious puberty treated with cetrorelix [gonadotrophin-releasing hormone (GnRH) antagonist] after poor response to GnRH agonist therapy was observed in the endocrinology outpatient clinic. Uterine and ovarian morphology returned to within the normal prepubertal range after GnRH antagonist was injected subcutaneously. Vaginal bleeding stopped completely.

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Fetal acrania is uniformly lethal and termination is suggested whenever the diagnosis is made. Traditionally, the diagnostic tool was 2-D ultrasound (US). In this series, we report our work of detecting acrania using 3-D US.

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Study Objective: To assess changes in serum hormone levels and ovarian stromal blood flow after laparoscopic ovarian drilling (LOD) in young adult women with polycystic ovary syndrome (PCOS).

Design: Prospective, nonrandomized study (Canadian Task Force classification II-1).

Setting: Tertiary care, major teaching hospitals.

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Objective: This was a prospective comparative clinical study to test the hypothesis that the decreased ovarian sensitivity to gonadotropins observed in women embarking on an in vitro fertilization (IVF) treatment may be due to changes in ovarian stromal blood flow.

Study Design: Three-dimensional (3D) power Doppler ultrasonographic indexes were used to quantify ovarian stromal blood flow and vascularization in poor responders. Forty patients undergoing an IVF cycle were collected and divided into two groups, a poor responder group (n=17) (estradiol <600 pg/mL or < or =3 oocytes retrieved) and normal responder group (n=23), based on their response to a standard down-regulation protocol for controlled ovarian stimulation.

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To test the hypothesis that the increased ovarian sensitivity to gonadotropins observed in women embarking on an in vitro fertilization (IVF) treatment may be due to changes in ovarian stromal blood flow, we undertook this prospective comparative clinical study using three-dimensional (3-D) power Doppler ultrasound (US). The 3-D power Doppler ultrasonographic indexes were used to quantify ovarian stromal blood flow and vascularization in hyperresponders. A total of 58 patients undergoing an IVF cycle were recruited and divided into two groups, a hyperresponder group (n = 23) (peak estradiol > 3000 pg/mL or >/= 15 oocytes retrieved) and normal responders (n = 35), based on their response to a standard down-regulation protocol for controlled ovarian stimulation.

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Objective: To investigate the effect of continuous-combined hormone replacement therapy (HRT) on ovarian circulation, we used three-dimensional power Doppler ultrasound to assess ovarian stromal blood flow in postmenopausal women.

Design: Forty healthy, postmenopausal women were enrolled in this prospective, controlled study. They were divided into two groups: the control group (20 patients with no HRT treatment) and the HRT group [initially 20 patients, but later 15 patients who completed the study, using continuous-combined conjugated equine estrogen (0.

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Fetal multicystic dysplastic kidney (MCDK) may have grave prognosis and prenatal diagnosis of MCDK by ultrasound (US) is very important. Traditionally, MCDK is diagnosed by 2-D US. Recently, 3-D US has emerged, and may overcome the weakness of 2-D US.

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Prenatal diagnosis of fetal cystic hygroma is very important in clinical medicine. In this series, we report our work of detecting cystic hygroma using three-dimensional (3-D) ultrasound (US). We reviewed our computer database of prenatal diagnosis on cystic hygroma in National Cheng Kung University Hospital from May 1995 to June 2000.

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