Publications by authors named "Harald Mau"

7 Publications

  • Page 1 of 1

Visualization of the focus in congenital hyperinsulinism by intraoperative sonography.

Semin Pediatr Surg 2011 Feb;20(1):28-31

Pediatric Radiology, O. v. Guericke University, Magdeburg, Germany.

In surgery for focal congenital hyperinsulinism (CHI), the identification and complete resection of the focus without collateral damage is of utmost importance. In a pilot study we applied intra-abdominal high-frequency sonography during surgery for focal CHI in 2 infants. The focus could be identified, its relation to the pancreatic and common bile duct could be shown, and the typical octopus-like tentacles could be demonstrated. In one case the resection was successful; in the other it was not. These preliminary results suggest that intraoperative sonography could be a valuable tool in the surgical therapy of focal CHI and warrants further evaluation in a clinical study.
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February 2011

[Comorbidity and psychosocial need in children and adolescents with anorectal malformations].

Prax Kinderpsychol Kinderpsychiatr 2010 ;59(1):38-51

Charité Universitätsmedizin Berlin, Klinik für Psychiatrie, Psychosomatik und Psychotherapie des Kindes und Jugendalters, Berlin.

Anorectal malformations (ARM) are not externally visible and have an uncertain medical course. Only about half of the patients with ARM have satisfactory bowel functions. Studies of ARM have reported reduced quality of life and psychosocial problems in up to 73% of the patients. The aim of the current study was to document the psychiatric comorbidity and the psychosocial need of patients with ARM in a multidimensional diagnostic for the first time. The screening sample (N = 30) included 23 male and 7 female patients aged 4-17 years. The introduced Comprehensive Grading System with a sophisticated perspective of continence and associated problems showed 23 patients suffering severe burden. 70 % of the families confirmed increased psychosocial need. In the diagnostic one third of the patients had psychiatric diagnoses, one third had mild problems and one third had no difficulties. Therefore, a group program should be offered to all patients. To the patients with severe forms of ARM or with increased psychosocial need, the multidimensional diagnostic program including advices and recommendations should be offered. Psychosocial assistance is important to reinforce acceptance and integration of coping with the illness in one's life. Early intervention can prevent psychiatric disorders later in life.
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April 2010

Evaluation of [18F]fluoro-L-DOPA positron emission tomography-computed tomography for surgery in focal congenital hyperinsulinism.

J Clin Endocrinol Metab 2008 Mar 11;93(3):869-75. Epub 2007 Dec 11.

Clinic for Pediatric Surgery, Institute for Pathology, Charité University Medicine Berlin, Campus Virchow Klinikum, Augustenburger Platz 1, Mittelallee 8, D-13353 Berlin, Germany.

Context: In congenital hyperinsulinism (CHI), the identification and precise localization of a focal lesion is essential for successful surgery.

Objective: Our objective was to evaluate the predictive value and accuracy of integrated [18F]fluoro-L-DOPA ([18F]FDOPA) positron emission tomography (PET)-computed tomography (CT) for the surgical therapy of CHI.

Design: This was an observational study.

Setting: The study was performed in the Department of Pediatric Surgery at a university hospital.

Patients: From February 2005 to September 2007, 10 children with the clinical signs of CHI and an increased radiotracer uptake in a circumscribed area of the pancreas in the [18F]FDOPA PET-CT were evaluated.

Interventions: Guided by the [18F]FDOPA PET-CT report, all children underwent partial pancreatic resection, in two cases twice.

Main Outcome Measures: Correlation of the anatomical findings at surgery with the report of the [18F]FDOPA PET-CT, and the results of surgery and clinical outcome were determined.

Results: In nine children the intraoperative situation corresponded exactly to the description of the [18F]FDOPA PET-CT. A limited resection of the pancreas was curative in eight cases at the first surgery, in one case at the second intervention. We observed no diabetes mellitus or exocrine insufficiency in the follow up so far. In one child, hypoglycemia persisted even after two partial resections of the pancreatic head. Histological analysis finally revealed an atypical intermediate form of CHI.

Conclusions: The integrated [18F]FDOPA PET-CT is accurate to localize the lesion in focal CHI and is a valuable tool to guide the surgeon in limited pancreatic resection.
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March 2008

Duplication and exstrophy of the bladder with clitoris and vagina duplex as well as uterus bicornis.

Urology 2007 Sep;70(3):591.e1-2

Department of Surgical Pediatrics, Children's Hospital, Inselspital, University of Bern, Bern, Switzerland.

The variants of bladder exstrophy with duplication of the bladder are extremely rare and associated with further malformations of the genitourinary system. Initially, the clinical appearance is that of a classic exstrophy. In this case a second, regularly configured bladder with a normal supravesical urinary tract was found covered by an omphalocele like a cutaneous bag. At the same time, there was a duplication of the vagina and a bicornuate uterus. The surgical treatment, aiming at anatomic reconstruction of the genitourinary system and closure of the symphysis, was successfully performed without any complication.
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September 2007

Isolated left-sided congenital diaphragmatic hernia: cardiac axis and displacement before fetal viability has no role in predicting postnatal outcome.

Prenat Diagn 2007 Apr;27(4):322-6

Department of Obstetrics and Gynecology, Charité University Hospital, Berlin, Germany.

Objectives: The purpose of this retrospective study was to determine whether objective assessment of cardiac shifting on two-dimensional ultrasonography can predict postnatal outcome in fetuses with isolated left-sided congenital diaphragmatic hernia (CDH).

Materials And Methods: Still images at the level of the four-chamber view were obtained in 23 fetuses with left-sided CDH. A group of 12 fetuses (3 non-survivors and 9 survivors) were examined at two periods, between 20 and 30 weeks and between 31 and 40 weeks. A further 11 fetuses (2 non-survivors and 9 survivors) were examined between 31 and 40 weeks. Fetal heart axis and position were determined manually and associated with postnatal outcome.

Results: The cardiac axis remained constant in the 9 survivors (15.5 +/- 3.2 versus 17.2 +/- 3.3, p = 0.71) and 3 non-survivors (19.0 +/- 11.5 versus 18.5 +/- 11.8, p = 0.97). There was no statistical difference between the 9 survivors and 3 non-survivors at the two periods. Cardiac displacement remained constant in the 9 survivors (0.2 +/- 0.02 versus 0.2 +/- 0.02, p = 0.32) but increased significantly in the 3 non-survivors (0.2 +/- 0.04 versus 0.4 +/- 0.02, p = 0.015). The difference between survivors and non-survivors was statistically significant between the18 survivors and 5 non-survivors examined between 31 and 40 weeks of gestation (0.2 +/- 0.02 versus 0.4 +/- 0.02, p = 0.037).

Conclusion: This study does not support the hypothesis that objective assessment of mediastinal shift in fetuses with left-sided CDH has a role in predicting postnatal outcome before fetal viability, which is when it would be more useful for counseling patients regarding whether to continue with the pregnancy or to opt for termination.
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April 2007

Rhabdomyomatous dysplasia of the newborn lung associated with multiple congenital malformations of the heart and great vessels.

Pediatr Pulmonol 2002 Sep;34(3):222-5

Department of Neonatology, University Children's Hospital Charité, Humboldt University, Berlin, Germany.

Interstitial proliferation of striated muscle in the lung is extremely rare. Most cases are associated with other congenital malformations, such as lung sequestration, diaphragmatic hernia, or cardiac malformations. We describe a newborn with rhabdomyomatous dysplasia of the lung associated with multiple congenital malformations of the heart and great vessels. The female neonate was born at 37 weeks of gestation as the second child to a 31-year-old woman without relevant previous medical or family history. In week 26 of gestation, a complex heart malformation and polyhydramnion were diagnosed by ultrasound. Postnatally, right lung hypoplasia, a bilobar right and left lung, anomalous drainage of the pulmonary veins, atrial and ventricular septal defects, and double-outlet right-ventricle and multiple aortopulmonary collaterals were described. Histological examination of a biopsy of the right lung demonstrated the presence of numerous bundles of striated muscle fibers arranged randomly in the pulmonary interstitium. Unilateral resection of the right lung was not a therapeutic option, because the left lung had developed bronchopulmonary dysplasia with severe reduction in gas exchange as a consequence of long-term mechanical ventilation. Symptomatic relief and palliative cardiac surgery were offered. At age 5 months, the infant died of a pulmonary hemorrhage following cardiac surgery.
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September 2002

Myoid differentiation in mesoblastic nephroma: clinicopathologic and cytogenetic findings of a rare case.

J Pediatr Surg 2002 Aug;37(8):E22

Abteilung für Paidopathologie und Plazentologie, Institut für Humangenetik, Molekulare Zytogenetik, Klinik für Neonatologie, Charité, Campus-Virchow Klinikum, Humboldt-Universität zu Berlin, Berlin, Germany.

The authors report the case of a benign renal mesenchymal tumor in a baby boy detected by ultrasound scanning during prenatal diagnosis. Histologically, the tumor was diagnosed as a congenital mesoblastic nephroma (CMN) with myoid differentiation. The tumor normally is characterized by a fascicular proliferation of bland, spindle-shaped cells. CMN is the most common renal tumor in the neonatal period and presumedly results from a neoplastic transformation affecting the pluripotent mesodermal nephric blastema. In embryonic life, tumorigenic influences acting on the nephric blastema might result in selective overgrowth of its mesoblastic derivates. CMN must be differentiated from other spindle-shaped tumors, like Wilms' tumor, rhabdoid tumor of the kidney, clear cell sarcoma, nephrogenic adenofibroma, fibroma and fibrosarcoma, leiomyoma, metanephric stromal tumor, and, in this case especially, from tumors with myoid differentiation like infantile myofibromatosis. Numerical molecular abnormalities are observed frequently in renal mesenchymal tumors, especially in chromosome 11. Cytogenetic findings in our tumor after comparative genomic hybridization (CGH) showed full trisomies of chromosomes 20 and 22q, partial trisomies for the distal part of 11q and 1p, and an approximately full monosomy of chromosome 4 (4qter-4p15). The chromosomal imbalances of the tumor can be described as: rev ish enh(1p31pter,11q23qter,20,22), dim(4)(p15qter).
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August 2002