ABSTRACT
Neurofibromatosis [NF] is divided into two types, NF type 1 and NF type 2. Optic nerve gliomas have a high degree of association with NF type 1. NF 2, less commonly seen, is a complex of cutaneous and deep neural tumors. It is an autosomal dominant familial disorder in which CNS is affected in about 15% of the cases. Bilateral acoustic neuromas are pathognomonic of NF type 2 which may be associated with meningiomas or ependymomas. Typical clinical manifestations of neurofibromatosis are cafe-au-lait spots and multiple cutaneous tumors. There is bone involvement as scoliosis, pseudoarthrosis of long bones, scalloping of vertebral bodies, abnormal rib tubulation and defective ossification of the skull. Extraskeletal manifestations of neurofibromatosis include optic nerve gliomas, pheochromocytoma, aneurysms of cerebral and renal arteries, acoustic neurilemmoma and superficial skin nodular neurofibromas. Here, we intend to present images of several cases of neurofibromatosis with different patterns of body involvement
ABSTRACT
Background: there is no information on renal size and its relation to age, sex and height in the area of Isfahan. The aim of this study was to define sonographically measured absolute renal lengths and their relations to height in normal Isfahani adults
Methods: 400 healthy Isfahani subjects aged 20 to 69 years with normal blood pressure, no history of renal disease in them or their first degree relatives and with normal sonographic appearance were chosen in 2002-2003. The study was cross-sectional. With real-time sonography, absolute renal length was measured
Results: four hundred healthy adults [230 men and 170 women] aged 20 to 69 years [39.6 +/- 13.6 year] were evaluated. The length of left kidney was longer than the right one [111 +/- 9.8 mm vs. 109 +/- 8.4 mm in right kidney; P < 0.01]. Renal length was significantly greater in males compared to females [P < 0.01]. Renal length decreased with age and the rate of decrease was accelerated at the age of 60 years and older. There was a significant correlation between kidney length and the subject's height [P < 0.01]
Conclusion: the result of this study shows the normal values for renal length in Iranian males and females, which may be helpful in assessing the size of patients' kidneys in different clinical settings
ABSTRACT
Background: the aim of this study is to determine sensitivity and specificity of 3D- Time-Of-Flight and Phase Contrast Magnetic resonance angiography [MRA] in comparison with intra-arterial digital subtraction angiography [IA- DSA] in detection of intracranial aneurysms
Methods: 54 patients with 22 aneurysms underwent MRA and then IA-DSA prospectively from October 2002 till December 2003
Results: MRA detected 20 aneurysm where as IA- DSA scored 22 [90.9%]. false positive in MRA was 18.1% [4 cases] and no false positive was in IA- DSA. So sensitivity of MRA in detection of intracranial aneurysms is 90.9%, and specificity is 88.8%. Positive predictive value of 83.3% and negative predictive value of 94.1% is also calculated
Conclusion: MRA is a valuable non- invasive technique in the detection of intracranial aneurysms that can be a proper screening test for this purpose
Subject(s)
Humans , Male , Female , Ultrasonography, Doppler, Color , Ischemic Attack, Transient/diagnosis , Vertebral ArteryABSTRACT
Regarding the prevalence of deep vein thrombosis [DVT] and it's serious complications and side effects finding a noninvasive, sensitive and quick diagnostic method seems to be necessary. To compare the results of color doppler sonography and venography as a primary diagnostic method for DVT so as to give a practical guideline to screen the patients. Through an interventional study a total number of 45 patients suspected to DVT were assessed with color doppler sonography and then contrast venography was done and finally findings were compared by Chi square test [1996-1997]. The diagnostic sensitivity and specifity of color doppler sonography for femoral and popliteal thrombosis is comparable with venography [100%] while in calf DVT, color doppler sonography has less sensitivity [23%] compared with venography [100%]. Ruptured baker cyst and calf muscle hematomas can not be diagnosed by venography, but color doppler sonography has very high sensitivity and specifity. The findings indicate that color doppler sonography can be a primary noninvasive and quick diagnostic method and can replace venography on DVT diagnosis