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Biomedical subjects

R Pöhnl

Publications and source records attributed to R Pöhnl.

2 recordsLinked to original sources

Docetaxel extravasation.

We report on an accidental extravasation of docetaxel given intravenously as chemotherapy in a cancer patient. The extravasate was immediately diluted subcutaneously with saline, in addition to which hypothermia (ice-packs) was implemented and topical dimethylsulfoxide (DMSO) was applied three times every 45 min. Corticosteroids and diclofenac were also administered. Dermatitis developed immediately but had disappeared within 24 h. Notably, dermatopathological changes were absent on days 2-4, minimal on day 5, and increased thereafter. Dermatitis developed as a late symptom, resulting in brown discoloration and skin hyperplasia. No plastic surgical intervention was necessary. We propose that isotonic saline, topical DMSO and local hypothermia may have restricted the inflammation and tissue necrosis induced by the extravasation of docetaxel. Repetitive topical application of DMSO beyond the day of extravasation had no additional benefit.

Aged↗

Usefulness of chromogranin A as a marker for detection of relapses of carcinoid tumours.

It is well known that peptide-producing endocrine tumours cosecrete immunoreactive chromogranin A with their characteristic hormones. Into this study 187 patients with the diagnosis malignant carcinoids or other malignancies were entered. Using chromogranin A at a cut-off level of 30.3 U/ml it was possible to discriminate between patients in remission and patients suffering a relapse with a sensitivity of 91.7% and a specificity of 96.4%, which may be of important diagnostic value. In our study that lasted over one year we could clearly show that the measurement of chromogranin A is impressively superior to 5-hydroxyindoleacetic-acid for detecting a relapse of carcinoids.

Biomarkers, Tumor↗