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1.
AJNR Am J Neuroradiol ; 37(3): 565-71, 2016 Mar.
Article in English | MEDLINE | ID: mdl-26611990

ABSTRACT

BACKGROUND AND PURPOSE: A key angiographic sign observed in patients with spinal vascular malformations is the absence of a normal venous phase. While this finding alone is often believed to rule out a lesion impacting the perimedullary venous drainage, the observation of a venous phase in several patients with vascular malformations led us to reconsider the validity of that sign. MATERIALS AND METHODS: Eighty-one patients with 6 spinal arteriovenous malformations, 16 perimedullary arteriovenous fistulas, 61 spinal epidural or dural AVFs, and 1 paravertebral AVF (2 patients had multiple lesions) were reviewed. The venous phase was defined as normal, absent, or indeterminate. The venous phase timing was analyzed in patients with spinal dural or epidural AVFs. RESULTS: The existence of a venous phase could not be determined for technical reasons in 23 patients. A venous phase was documented in 25 of 58 patients (43%), including 16 of 49 vascular malformations (40.0%) with perimedullary venous drainage. Twelve of the 30 patients (40.0%) with dural or epidural AVFs had a normal venous phase, appearing, on average, 10.1 seconds and best visualized 15.0 seconds after opacification of the artery of Adamkiewicz. CONCLUSIONS: A normal venous phase was observed in 43% of patients with spinal vascular malformations, and within an acceptable delay (<18 seconds) in 40% of slow-flow AVFs. While it remains an important angiographic sign, the observation of a normal venous phase cannot be used to exclude the presence of a vascular malformation or justify interrupting a diagnostic spinal angiogram.


Subject(s)
Central Nervous System Vascular Malformations/diagnostic imaging , Spinal Cord/diagnostic imaging , Adolescent , Adult , Aged , Angiography , Female , Humans , Incidence , Male , Middle Aged , Spinal Cord/pathology , Young Adult
2.
Przegl Epidemiol ; 46(3): 269-72, 1992.
Article in Polish | MEDLINE | ID: mdl-1296253

ABSTRACT

The examination included 1594 children at the age of 3 to 6 from the city Rzeszów (834) and from villages in the Rzeszów district chosen at random (760). There were 865 boys (54.3%) and 729 girls (45.7%) in the group. The size of thyroid gland was measured according to the modified classification of WHO from 1974. All the examined children were in the clinical euthyroid state. Enlarged thyroid gland was found in 369 children (23.1%). Goiter OB was diagnosed in 271 children, I degree in 85, II degrees in 11, III degrees in 2. Enlargement of thyroid gland occurred significantly more often in rural areas (36.8%) than in towns (14.8%). The lowest percentage of goiter was found in 3-year-olds. These results point out that the province is an endemic area of mild goiter. Emphasis was put on the necessity to increase goiter prevention in the Rzeszów district.


Subject(s)
Goiter, Endemic/epidemiology , Child , Child, Preschool , Female , Goiter, Endemic/prevention & control , Humans , Incidence , Male , Poland/epidemiology
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