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33 results on '"Degryse, Hendrik R."'

1. Miscellaneous

Author

Vanhoenacker, Filip M., Van Hoyweghen, Astrid, Degryse, Hendrik R., Snoeckx, Annemiek, Vanhoenacker, Filip M., editor, Parizel, Paul M., editor, and Gielen, Jan L., editor

Published
2017
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2. Tumors of Uncertain Differentiation

Author

Sprengel, Simon David, Weber, Marc-André, Degryse, Hendrik R., Vanhoenacker, Filip M., Vanhoenacker, Filip M., editor, Parizel, Paul M., editor, and Gielen, Jan L., editor

Published
2017
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7. Douleur osseuze chez une jeune femme

Author

Verwimp, Wim, Degryse, Hendrik R., Vanhoenacker, Filip, de Schepper, Arthur, and Parizel, Paul M.

Subjects
Human medicine
Abstract

Dans cet article de la rubrique «Cas clinique de radiologie», nous analysons le cas dune jeune femme présentant un chondrosarcome du fémur. Bien que la combinaison des constatations cliniques, de limagerie (radiographie standard et IRM) et de lexamen histopathologique soit la pierre angulaire du diagnostic et du traitement corrects de cette lésion en général, limagerie permet en soi un diagnostic orienté vers les tissus en cas denchondrome-chondrosarcome de bas grade.

Published
2009

8. Botpijn bij een jonge vrouw

Author

Verwimp, Wim, Degryse, Hendrik R., Vanhoenacker, Filip, de Schepper, Arthur, and Parizel, Paul M.

Subjects
Human medicine
Abstract

In dit artikel van de rubriek beelden en beweging bespreken we een jonge vrouw met een chondrosarcoma van het dijbeen. Alhoewel de combinatie van de klinische bevindingen, beeldvorming (standaardradiografie en MRI) en histopathologisch onderzoek de hoeksteen vormt voor de correcte diagnose en behandeling van dit letsel in het algemeen, maakt de beeldvorming op zich een weefselgerichte diagnose mogelijk in geval van enchondroma-laaggradig chondrosarcoma.

Published
2009

21. Statistical analysis of MRI parameters predicting malignancy in 141 soft-tissue masses

Author

de Schepper, Arthur, Ramon, F.A., and Degryse, Hendrik R.

Subjects
Computer. Automation
Abstract

Since well-known grading parameters such as cellularity, mitotic rate, matrix and presence of necrosis all influence MRI signal intensity, the value of MRI in predicting malignancy is potentially high. To assess this value we studied retrospectively the findings in 141 soft tissue tumours (84 benign, 57 malignant) and evaluated a wide variety of MRI features (size, margins, signal homogeneity, shape, signal intensity, neurovascular and bone involvement, degree and pattern of enhancement and evidence of necrosis after injection of Gd-DTPA). Statistical analysis was carried out to determine accuracy of parameters individually and in combination, for predicting malignancy. Highest sensitivity was obtained for "absence of low signal intensity on T2" (100%), "mean diameter > 33 mm" (90 %), and "inhomogeneous signal on T1" (88 %). Highest specificity was obtained for "evidence of necrosis" (98 %), "bone or neurovascular involvement or metastases" (94 %), and "mean diameter > 66 mm" (87 %). Association of best sensitivity and specificity was seen for "absence of low signal intensity on T2", "signal inhomogeneity on T1", and "mean diameter of the lesion > 33 mm" (81 and 81 %).

Published
1992

29. Herpes Simplex Virus Type 1 Colitis: An Unusual Cause of Diarrhea.

Author

Colemont, Luc J., Pen, Jan H., Pelckmans, Paul A., Degryse, Hendrik R., Pattyn, Stefaan R., and Van Maercke, Yvan M.

Subjects
DIARRHEA in old age, HERPES simplex virus, GASTROINTESTINAL diseases, COLONOSCOPY, HISTOLOGY, LOPERAMIDE, TREATMENT of diseases in older people
Abstract

Herpetic infections of the gastrointestinal tract are a well-recognized entity. Involvement of the colon seems to be very rare. A 78-yr-old woman developed bloody diarrhea and abdominal discomfort 2 months after surgical treatment for adenocarcinoma of the transverse colon. Colonoscopy revealed diffuse hemorrhagic, erosive, aphtoid, and ulcerative lesions. Histology showed nonspecific inflammatory changes. Herpes simplex virus type 1 (HSV-1) was isolated from endoscopic biopsy and stool specimens. The patient responded rapidly to symptomatic treatment with loperamide. This case demonstrates the potential for HSV-1 to induce infectious colitis; failure to obtain microbiologic evaluations and the rapid response to empiric, symptomatic treatment may be responsible for the rarity of diagnosis of this infection. The implications of this diagnosis are probably more relevant in immunosuppressed individuals, and may be important in the elderly population. [ABSTRACT FROM AUTHOR]

Published
1990

31. GadoliniumDOTA Enhanced MR Imaging of Intracranial Lesions

Author

Parizel, Paul M., Degryse, Hendrik R., Gheuens, Jan, Martin, Jean-Jacques, Vyve, Michel Van, De La Porte, Christian, Selosse, Paul, Heyning, Paul Van de, and Schepper, Arthur M. De

Abstract

Gadolinium 1,4,7,10-tetraazacyclododecane-N,N′,N′,N′′-tetraacetic acid (Gd-DOTA) is the first of a new class of macrocyclic paramagnetic magnetic resonance (MR) contrast agents (gadolinium cryptelates) to be used in clinical practice. Gadolinium-DOTA possesses relaxation properties similar to those of gadolinium diethylene triamine pentaacetic acid (Gd-DTPA). We report our initial clinical experience in 38 patients with intracranial lesions studied with MR before and after injection of Gd-DOTA. Diseases included primary and metastatic brain tumor, cerebral infarct, vascular malformation, meningioma, hemangiopericytoma, schwannoma, and pituitary macroadenoma. Gadolinium-DOTA was administered intravenously in a dosage of 0.1 mmol/kg body weight. All studies were performed on a superconductive 0.5 T system. As compared to noncontrast T1− and T2-weighted images (WI), Gd-DOTA enhanced T1 WI were useful in defining the anatomy of malignant intraaxial tumors (high-grade glioma, metastasis) and in tumor versus edema differentiation. Low-grade gliomas did not enhance; in these cases the precontrast T2-weighted sequence was found to be more informative. In postoperative patients, Gd-DOTA allowed us to demonstrate residual tumor or tumor recurrence. Extraaxial tumors (meningioma, hemangiopericytoma, neuroma) enhanced markedly, presumably reflecting tumor vascularity. In our experience, the use of Gd-DOTA improves the anatomic definition of cerebral lesions and in some cases increases both MR sensitivity and specificity. We found Gd-DOTA to be a well tolerated and effective paramagnetic contrast agent. Gadolinium-DOTA can be considered as an alternative water-soluble MR contrast agent to Gd-DTPA.

Published
1989

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