cheerleader wrote:Found some interesting research on condylar differences in 50 normals, as shown on CT scan. It seems that in normals, there is asymetry or ageneis in the condylar veins, but not these giant veins like you're seeing in pwMS, and the occipital bone showed differences which affected the veins...In all cases, the anterior condylar veins connected the anterior condylar confluence to the marginal sinus; however, a number of cases with asymmetry and agenesis in the posterior and lateral condylar veins were seen. The posterior condylar vein connected the suboccipital cavernous sinus to the sigmoid sinus or anterior condylar confluence. The posterior condylar canal in the occipital bone showed some differences, which were accompanied by variations in the posterior condylar veins. In conclusion, there are some anatomical variations in the venous structures of the craniocervical junction; knowledge of these differences is important for the diagnosis and treatment of skull base diseases. Contrast-enhanced CT using a multidetector scanner is useful for evaluating venous structures in the craniocervical junction.
http://bjr.birjournals.org/cgi/content/ ... 83/994/831
Dr. Z found that the condylar system became one of the main collateral pathways activated in CCSVI. In fact, that's exactly what my hubby had. No jugulars, but big, squirrely condylars. Once he had jugular veins open and flowing, the condylars disappeared. Since his blockage was high, into transverse sinus, maybe that's why the condylars became developed? Maybe it has to do with the location of stenotic lesion and availability of collateral drainage at that location....the old freeway detour analogy?The main collateral pathways activated in the course of CCSVI are the condylar venous system, the pterygoid plexus and the thyroid veins.2,6 Additionally, the suboccipital cavernous sinus and the hemiazygous-lumbar venous anastomosis with the left renal vein may also become prominent substitute circles. Collateral circulation prevents brain oedema and intracranial hypertension,2,4 and ensures a correct but slower, and thus insufficient, venous drainage.12,14
anyway, just read that you may still be on vacation...in which case, nevermind, and we'll all catch up with you later....
David1949 wrote:Dr. Sclafani it is reported that about 20% of people in the general population do not have valves in the jugular veins. Could you estimate what that percentage would be among the people you've treated for CCSVI?
bluesky63 wrote:The doctor I saw today said that it's common to use sclerotherapy to "seal off" tortuous veins like this in the pelvis. This made me wonder, what happens to people who have this done? Is there an impact on the rest of the venous system in the nearby anatomy? On potential neuro symptoms?
Thank you very much for any information.
Description: The pelvic circulation for the sigmoid colon and rectum is derived by the inferior mesenteric a. from the aorta, and the remaining viscera derive blood flow via the common iliac a., except for the ovarian a. which are from the abdominal aorta. The external iliac a. separates from the internal iliac a. just above the pelvic inlet, and courses anteriorly into the lower extremity by passing beneath the inguinal ligament. At the level of division of the external a., the internal iliac a. has three branches, the iliolumbar a., the lateral sacral a., and the large superior gluteal a. , the latter exiting above the piriformis m. Distally, at the lower margin of the piriformis m., seven major branches are visible anteriorly in the pelvis: the obturator a., superior vesical a., the uterine a., the inferior vesical a., the middle rectal a., the internal pudendal a., and the inferior gluteal a. Posteriorly, the inferior rectal a. branches from the internal pudendal a. supply the anal canal. The venous collecting system in the visceral pelvis, in contrast to most other regions, begins from plexuses about the bladder, ovary, uterus and cervix, and the anorectal region. These tributaries coalesce into identifiable, although variable veins. As with the a., the ovarian vein courses laterally through the suspensory ligamant of the ovary, draining directly into the vena cava on the right, and into the renal v. in the left. Distally, the larger of the venous plexus are the inferior mesenteric v., draining to the portal v., and the middle and inferior rectal v. These drain to the internal pudendal v. which courses cephalad, connecting with the inferior gluteal v. and the lateral sacral v. to form the internal iliac v. This v. joins the external iliac v. at the pelvic inlet forming the common iliac v.. In the perineum, the internal pudendal v. collects blood from the bulbospongiosis m., the bulb of the vestibule and greater vestibular gland, the superficial transverse perineal m., the levator ani m., and the external anal sphincter. During pregnancy, the normally tortuous uterine vessels become elongated and enlarged to meet the new metabolic demands.
It is thought that permanent disruption of the valves using balloons alone is not possible at present and that over aggressive high pressure ballooning may risk venous damage.
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