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Biomedical subjects

B Desprechins

Publications and source records attributed to B Desprechins.

At least 19 recordsLinked to original sources
PubMed2003

[Tietze's syndrome in a 2-year old boy].

A 2-year-old boy was seen with a painful swelling of the left costochondral junction. Laboratory examination revealed no signs of infection. Echography and CT-scan revealed swelling of the 4th and 5th costochondral junction and the pectoral muscle. Tietze's syndrome was suspected and a wait-and-see policy was decided on. During follow-up, the symptoms gradually decreased. Ten weeks after the onset of symptoms there was only a slight, painless swelling with normal ultrasound findings. Tietze's syndrome is defined as a benign, painful, non-suppurative and localised swelling of the costosternal, costochondral or sternoclavicular joints with spontaneous regression of symptoms. It is typically described in adults but appears in children and infants as well. Recognition of this syndrome and knowledge of its favourable outcome can prevent invasive diagnostic procedures.

Child, Preschool↗
PubMed1999

Popliteal cysts in children: prevalence, appearance and associated findings at MR imaging.

OBJECTIVE: The purpose of this study was to determine the prevalence of Baker's cysts on MR images in a paediatric orthopaedic population, to investigate the association of Baker's cyst with joint fluid and joint disorders in children, and to compare the MR appearance of Baker's cysts in children with that previously reported in adults. MATERIALS AND METHODS: Reports from 393 MR studies of the knee performed in children aged from 1 to 17 years were retrospectively reviewed for the presence of a Baker's cyst, joint effusion, meniscal tear, anterior cruciate ligament tear, or any other joint disorder. RESULTS: A Baker's cyst was identified in 6.3 % (25/393) of patients. The MR images and clinical charts of patients with a Baker's cyst were reviewed. None of the 25 patients with a Baker's cyst had an associated anterior cruciate ligament tear or meniscal tear. Two patients had osteochondritis dissecans and two others had synovial disease (infection and juvenile rheumatoid arthritis). Joint fluid was demonstrated in 16 % (4/25) of patients with a Baker's cyst. There was no statistically significant association between presence of a Baker's cyst and presence of joint fluid. CONCLUSIONS: Baker's cyst is less prevalent in a paediatric orthopaedic population than in an adult population. In children, it seems that Baker's cyst is seldom associated with joint fluid, meniscal tear, or anterior cruciate ligament tear. On MR images, a communication between the Baker's cyst and the joint was not demonstrated in any of the patients. In addition, the presence of debris and cyst leakage was not observed.

Adolescent↗
PubMed1999

Use of diffusion-weighted MR imaging in differential diagnosis between intracerebral necrotic tumors and cerebral abscesses.

The differential diagnosis between intracerebral necrotic tumors and cerebral abscesses is frequently impossible with conventional MR imaging. We report two cases of cerebral abscesses that showed high signal on diffusion-weighted echo planar imaging and a strongly reduced apparent diffusion coefficient. This appearance was not present in our cases of necrotic/cystic gliomas (eight cases) and necrotic metastases (two cases). We believe that diffusion-weighted MR imaging may be a diagnostic clue in cases of cerebral "ring-enhancing" masses.

Aged↗
PubMed1998

Subcutaneous granuloma annulare: MR imaging findings.

We present a case of subcutaneous granuloma annulare evaluated with MR imaging. The mass was poorly defined and showed thickened interconnecting strands with low signal intensity on T1- and T2-weighted MR images. When a poorly defined subcutaneous mass with low signal intensity on both T1- and T2-weighted MR images is observed in an otherwise healthy child, subcutaneous granuloma annulare should receive serious consideration. Subcutaneous granuloma annulare should be added to the list of tumors with short T2.

Buttocks↗
PubMed1998

Technetium-99m-dimercaptosuccinic acid renal scintigraphy in children over 5 years.

We retrospectively evaluated the frequency of renal scintigraphic abnormalities in children over 5 years admitted with a first symptomatic urinary tract infection (UTI). Among 261 children investigated, we found only 23 over 5 years having had technetium-99m-dimercaptosuccinic acid scintigraphy during the acute phase of a first UTI. Obvious scintigraphic abnormalities were detected in 14 children (15 kidneys): 12 kidneys showed focal cortical defects and 3 were small and deformed. Ultrasound was normal in 7 of the 15 kidneys with abnormal scintigraphy and in all the kidneys with normal scintigraphy. Among the 12 kidneys with focal cortical lesions, 8 kidneys returned to normal or improved considerably 2-12 months after initial work-up. In conclusion, in children over 5 years admitted with a first symptomatic UTI, the frequency of scintigraphic abnormalities is high and a strategy based only on ultrasound data would miss about 50% of the abnormal kidneys.

Acute Disease↗
PubMed1998

The use of the anti-malaria drug Fansidar (pyrimethamine and sulphadoxine) in the treatment of a patient with autoimmune lymphoproliferative syndrome and Fas deficiency.

Fas is a protein that plays a major role in the apoptotic mechanism of several cell types, including white blood cells (WBC). Mutations of the Fas gene in humans are known to lead to autoimmune lymphoproliferative syndrome (ALPS). Glucocorticoids or cytostatic drugs are sometimes used to treat the lymphoproliferation in these patients. When treated with the anti-malaria drug Fansidar, a patient with ALPS showed a marked shrinkage of the lymph node masses, decrease in peripheral blood lymphocytes (PBL) and an increase in neutrophil numbers. In addition, an increased Fas expression was seen on all types of leucocytes.

Antimalarials↗
PubMed1997

Prevalence of sinusitis signs on MRI in a non-ENT paediatric population.

In a population of 100 children with suspected intracranial neurological disease, the overall prevalence of sinusitis signs on magnetic resonance images (MRI) is 45%. This figure exceeds the adult prevalence of 39%, while the nature of the lesions is more severe in children. Furthermore, paediatric sinuses seem to be affected according to a different pattern: adults have mainly maxillary and anterior ethmoidal lesions, whereas in children the sphenoidal and posterior ethmoidal sinuses are frequently involved too. Among children, the overall prevalence increases in the presence of a history of nasal obstruction (prevalence: 50%) and recent upper respiratory tract infection (prevalence: 81%) as well as when bilateral mucosal swelling (prevalence: 80%) or purulent secretions (prevalence: 100%) are seen on anterior rhinoscopy.

Adolescent↗
PubMed1995

A vein of Galen aneurysm with an abnormal drain system: MRI findings.

The case of a premature girl with a vein of Galen aneurysm is reported. The lesion was detected by ultrasonography. MRI provided complete anatomical information, obviating the need for initial angiography for preoperative evaluation of the malformation. Venous drainage through a persistent embryonic falcine sinus and associated atresia of the straight sinus could be identified, while venous thrombosis and parenchymal damage could be excluded.

Carotid Arteries↗
PubMed1995

Bilateral striatal necrosis with a novel point mutation in the mitochondrial ATPase 6 gene.

A 2.5-year-old boy with bilateral striatal lesions is reported. Using polymerase chain reaction-single-strand conformation polymorphism analysis and direct DNA sequencing, a novel point mutation (T to C) at nucleotide 8851 of the mitochondrial DNA (mtDNA) was identified. This mutation changes a highly conserved tryptophan to arginine in subunit 6 of the mtATPase gene. The mutation was nearly homoplasmic and maternally inherited. This is the first published report of a mutation in the mtDNA in bilateral striatal degeneration. It is possible that other cases of bilateral striatal degeneration have been caused by mutations in the mtATPase 6 gene or genes encoding other subunits of the mtATPase; and therefore the mtATPase genes should be examined in children with this condition.

Adenosine Triphosphatases↗
PubMed1995

Retroperitoneal teratoma as first sign of Klinefelter's syndrome.

A 5 month old boy with a retroperitoneal teratoma was found to have a 47 XXY karyotype indicating Klinefelter's syndrome. This observation suggests that patients with the syndrome may be at risk of germinal tumours in sites other than those usually reported (mediastinum, brain, and testes).

Humans↗
PubMed1995

A rare cause of rickets in a young child.

We present a case of nutritional rickets in a young child due to a macrobiotic diet. The child presented with important thoracic deformation and breathing difficulties. Plain radiographs appeared to be an excellent method for the diagnosis and follow-up of the bony lesions in this disorder. We describe the typical bony abnormalities related to this relative rare disease.

Calcium, Dietary↗
PubMed1994

How good is technetium-99m mercaptoacetyltriglycine indirect cystography?

The aim of the present study was to estimate the sensitivity of indirect radionuclide cystography (IRC) performed with technetium-99m mercaptoacetyl-triglycine (MAG3), in comparison with the micturition cystourethrography (MCUG) and direct radionuclide cystography (DRC), for the diagnosis of vesicoureteric reflux. Two groups of patients were selected: group I comprised 40 children who underwent IRC during the acute phase of urinary tract infection and an MCUG 6 weeks later; group II comprised 42 (other) children with known reflux, who underwent IRC and DRC during follow-up. Taking as the reference the total number of refluxing kidneys detected by means of any cystographic technique, 99mTc-MAG3 ICR missed two-thirds of the refluxing kidneys. Most of the small refluxes were missed, but so too were 50% of the major refluxes. Taking as the reference 99mTc dimercaptosuccinic acid (DMSA) scintigraphy, MCUG detected 91% of the patients with DMSA abnormalities on at least one kidney, DRC detected 95%, and IRC detected 46% and 43% respectively, in groups I and II. The use of 99mTc-MAG3 IRC as the sole technique for the detection of vesicoureteric reflux gives rise to an unacceptable number of false-negative results.

Adolescent↗