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R Walter

Publications and source records attributed to R Walter.

331 records · Page 19Linked to original sources
PubMedDate not supplied

Comparison of Duplex sonography and color Doppler imaging in renal allograft evaluation: a prospective study.

A prospective study compared the diagnostic capability of quantitative Duplex sonography (DS) and color Doppler imaging (CDI) in 49 consecutive patients with 50 renal allografts. Sixty five DS examinations and 65 CDI examinations were performed by two independent investigators on two different machines on the same day. The resistive index (RI) was calculated and the color flow of renal arteries was observed up to the arcuate arteries. There was good correlation of RI values obtained by DS and CDI at all vascular sites. Thirty one allografts were functioning stably and 19 were in a state of dysfunction, defined by histology (n = 17). Forty allografts presented with a RI less than 0.9 and normal color flow. All five allografts with a pathologic RI greater than or equal to 0.9 showed abnormal color flow (missing flow in arcuate and/or interlobar arteries). Five allografts had a RI less than 0.9 but abnormal color flow, possibly due to atrial fibrillation, hypertension, heart failure or a combination of these. A normal color flow pattern excludes severe vascular compromise to the allograft. In addition, CDI revealed three biopsy-related vascular lesions; two of them had been missed by DS.

Adult↗
PubMedDate not supplied

Primary pleomorphic adenoma of the external auditory canal diagnosed by fine needle aspiration cytology. A case report.

BACKGROUND: Pleomorphic adenoma (PA) arising in the external auditory canal (EAC) is a very rare neoplasm, thought to be derived from ceruminous glands. CASE: A 43-year-old male presented with a slowly growing mass in the right EAC. Clinical and radiologic examinations showed a well-circumscribed tumor limited to the EAC, without a connection to the parotid gland. Fine needle aspiration cytology (FNAC) revealed the typical cytologic findings of PA. The diagnosis was confirmed by histologic examination. CONCLUSION: This case illustrates that together with clinical and radiologic findings, primary PA of the EAC can confidently be diagnosed by FNAC.

Adenoma, Pleomorphic↗
PubMedDate not supplied

[The need for psychotherapy in school-age children].

The article reports the results of an investigation of N = 1.969 school children (aged 6 to 17) of three rural communities, who had been assessed by a German version of the Child Behavior Checklist (Achenbach u. Edelbrock 1983). It was intended to determine the prevalence of clinical maladjustment and to investigate the effectiveness of selective factors in referring to child psychiatric facilities. The case definition was based on those items (behavior disorders), which were rated as in need for counseling or treatment by experts. After a statistical comparison with a sample of referred children the criterion was set up at two or more of such critical items. 12.7% of the school children fulfilled this condition, but most of them (87.6%) had not used institutional services. The rate of children and adolescents, who need psychotherapy was estimated lower (less than 10%). The readiness to refer clinical maladjusted children to child psychiatric facilities was influenced by age and socio economic status, but not by sex and foreign nationality.

Adolescent↗