 Good morning, everyone. I'm Dr. Apoora Riddhidhawar from MediCity Institute of Medical Sciences, Mitchell. I'm going to present a rare case of lateral numbar meningo seal in a patient with neurofibromatosis. The objective is to present a rare case of lateral numbar meningo seal and establish imaging features. Introduction. Meningo seal is a secular protrusion of meninges through the intervertebral foramina or eroded vertebrae. Numbar meningo seals are part of the complex manifestation of neurofibromatosis. Although Osh's abnormalities are one of the seven diagnostic criteria for NF1, neurofibromatosis type 1 consists of most prevalent phycomatosis, which are neurocutaneous syndromes of neural crest origin with low emphasis on Osh's abnormalities. Meningeal protrusions most commonly occur in the thoracic region, but they can also develop in cervical lumbar or sacral regions. In this case, a lateral lumbar meningo seal was discovered, which is rare in the literature. Case history. It was a 45-year-old female who presented with chronic lower back pain. The pain was not associated with postural alteration of the truncus. Neurological examination revealed no deficit. Ladder and bowel functions were normal. On clinical examination, there was widespread cafeolate spots, cutaneous neurofibromas and reddish-brown spots on the iris. They were noted consistent with diagnosis of neurofibromatosis. Here we can see widely spread cafeolate spots, maging features. On abdominal ultrasound, a large cyst was noted in the retroperitonium that was interpreted as the right para-renal cyst. CECT confirmed the presence of retroperitonium cystic lesion, displacing the right kidney superiorly. The lesion was extending into the right neural foramina of L3 and L4 vertebrae into the spinal canal. Diagnosis of lateral lumbar meningo seal was made. MRA confirmed the above findings and the lesion was described as a well-defined large, lobulated CSF intense areas extending from the spinal canal at L3 and L4 level through the foraminal region into the right paravertebral region, causing scalloping of vertebral bodies. Few traversing nerve roots were noted inside the lesion. Hence, diagnosis of the lateral lumbar meningo seal was confirmed. These are the images of CECT plane arterial phase and venous phase showing a retroperitonium cystic lesion, displacing the right kidney superiorly. The lesion was extending into the right neural foramina of L3 and L4 vertebrae into the spinal canal. This is a MRI spine scout. Here we can see the meningo seal. This is a T1 weighted MRI image which was described as a well-defined, large, lobulated lesion. This is a spinal sagittal T2 weighted MRI image. Here we can see the meningo seal. These are the sagittal T2 stir image and sagittal T2 MR myelography, which is discussion. Neurofibromatosis is a congenital and hereditary dysplasia that is inherited as an autosomal dominant trait It involves mesodermal and neuroectodermal tissues with manifestations in the central nervous system and musculoskeletal system. Skeletal manifestations include vertebral dysplasia with kyphoscoleosis, spinal cord lesions, extradiural masses, erosions of intervertebral foramina due to the dumbbell neurofibromas, neural ectasia and lateral meningo seals. Meningo seals manifestations in neurofibromatosis are commonly associated with neural ectasia and herniation of the tica sacs through a defect in the lateral aspect of the vertebrae or through the wide intervertebral foramina. And when present are usually intrathoracic. The rarity of this reported case is due to the location and size of the meningo seal. Conclusion in this particular case we report the emerging features of uncommon spinal manifestations of neurofibromatosis and also including the widening of intervertebral foramina due to lateral meningo seal. These are the references. Thank you.