lunedì 30 luglio 2007

Idiopathic dural dysplasia


Figure 1 and Figure 2: Axial and sagittal CT images demonstrate dural ectasia with a capacious thecal sac to the level of the sacrum.
Figure 3 and Figure 4: Sagittal T1 postcontrast and T2-weighted MR images reveal a dilated terminal thecal sac without a tethered cord. Benign subtle scalloping of the posterior margin of the lumbar and sacral vertebral bodies (Figure 4) is best visualized on the T2-weighted images.
Figure 5 and Figure 6: Axial T1 postgadolinium and axial T2-weighted MR images reveal a dilated thecal sac with root sleeve prominence.

Differential diagnosis:
- Idiopathic dural dysplasia
- Neurofibromatosis I
- Marfan syndrome
- Ehlers-Danlos syndrome
- Homocystinuria
- Achondroplasia
- Hurler syndrome (MPS IH)
- Syringomyelia
- Ankylosing spondylitis

Diagnosis: Idiopathic dural dysplasia

This case is an example of an expanded dural sac with posterior vertebral scalloping of the lumbar spine and sacrum. Findings include a capacious thecal sac with smooth scalloping of the posterior aspect of the involved vertebral bodies. Dural dysplasia most often occurs in the lumbar spine but can involve the cervical and thoracic spinal canal as well. The case described herein is mild as there is no resulting kyphoscoliosis or erosion of the pedicles which occurs in more severe cases. Making the diagnosis of dural dysplasia requires that one excludes other causes of the expansion of the canal such as syrinx, tumor or meningeal cyst. The differential diagnosis and etiology of dural dysplasia is extensive and should be distinguished from meningeal cysts. The patient in this case had no known cause for the dural dysplasia and only complained of back pain.

Meningeal cysts
- Type I meningeal cysts: are extradural cysts that do not contain nerve root fibers. Type IA cysts are extradural arachnoid cysts. Occult sacral meningoceles (OIM) are considered type IB meningeal cysts which are also extradural and do not contain nerve root fibers. OIMs present with smooth remodeling and enlargement of the sacral canal with an extradural arachnoid sacral cyst adjacent to the thecal sac.
- Type II meningeal cysts are extradural cysts that contain nerve root fibers. These include Tarlov cysts and spinal nerve root diverticula. Tarlov cysts are cystic dilatation of the sacral root pouches with associated bone erosion which may or may not be symptomatic.
- Type III meningeal cysts are true intradural arachnoid cysts.

1 commento:

  1. Most prostate cancers are adenocarcinomas, cancers that arise in glandular cells of the prostate’s epithelial tissue. Prostate cancers usually progress slowly and produce no symptoms in the initial stages. Eventually, the tumor may enlarge like mine too, the prostate gland, pressing on the urethra and causing painful or frequent urination and blood in the urine. So I was so uncomfortable with this prostate cancer diseases then I decided to do online search on how to cure cancer because I well have read a lot about herbal medicine, I came across a lot of testimony how Dr Itua cure HIV/herpes then Cancer was listed below the comment.with courage I contacted Dr Itua and he sent me his herbal medicine through Courier service then I was asked to pick it up at my post office which i quickly did. I contacted Dr Itua that I have received my herbal medicine so he instructed me on how to drink it for three weeks and that is how Dr Itua Herbal Medicine cures my prostate Cancer, The treatment takes three weeks and I was cured completely. Dr Itua is a god sent and I thank him every day of my life. Contact him now On: Whatsapp:+2348149277967.
    He listed that he can as well cure the following diseases below.... Cerebral Amides. Lung Cancer,Brain cancer,Esophageal cancer,Gallbladder cancer,Gestational trophoblastic disease,Head and neck cancer,Hodgkin lymphoma Intestinal cancer,Kidney cancer,Leukemia,Liver cancer,Melanoma,Mesothelioma,Multiple myeloma,Neuroendocrine tumors,Hodgkin lymphoma,Oral cancer,Ovarian cancer,Sinus cancer,Soft tissue sarcoma,Spinal cancer,Stomach cancer,Meniere's disease , Testicular cancer,Throat cancer,Thyroid Cancer,Uterine cancer,Vaginal cancer,Vulvar cancer. Alzheimer's disease,Autism,measles, tetanus, whooping cough, tuberculosis, polio and diphtheria Adrenocortical carcinoma. Alma, Uterine Cancer, Breast Cancer, Allergic diseases. Kidney cancer, Love Spell, Glaucoma., Cataracts,Macular degeneration,Cardiovascular disease,Lung disease.Enlarged prostate,Osteoporosis.Generalized dermatitis,Alzheimer's disease,Brain Tumor,Lupus,Endometrial Cancer, cerebrovascular diseases
    Dementia.Colo rectal cancer, Lottery Spell, Bladder Cancer, Skin Cancer,Ovarian Cancer,Pancreatic Cancer, HIV /Aids,Brain Tumor, Herpes, Non-Hodgkin lymphoma, Inflammatory bowel disease, Copd, Diabetes, Hepatitis