What is plexiform neurofibroma?
(PLEK-sih-form NOOR-oh-fy-BROH-muh) A tumor that forms in the tissue that covers and protects the nerves. Plexiform neurofibromas can occur anywhere in the body outside of the brain and spinal cord. They can occur on the face (including around the eye), neck, arms, legs, back, chest, abdomen, and internal organs.
Can neurofibromatosis affect your eyes?
The eyes can be affected in multiple ways in neurofibromatosis. If neurofibromas form on the eyelids, the eyelid can droop and block vision in an eye resulting in amblyopia. Inside the eyes, neurofibromatosis can result in tumors in the back of the eyes called astrocytic hamartomas.
What does a plexiform neurofibroma look like?
These tumors look like lumps under the skin. The skin over the lump may feel thicker and appear darker than the skin around it. The lump itself may feel like a bundle of thick cords or knots. Plexiform neurofibromas have a type of cell that releases histamine, a chemical in the body that can cause itching.
Is plexiform neurofibroma curable?
How are plexiform neurofibromas treated? Until recently, the only known effective treatment for plexiform neurofibromas has been surgery. Approximately 75% of patients who undergo a complete removal of the tumor without causing significant neurologic impairment or dysfunction are cured.
What does a plexiform feel like?
Plexiform neurofibromas often feel like a bunch of cords or knots beneath the skin and may have a variation in texture or darker pigmentation on top of the skin.
What causes plexiform neurofibroma?
Causes. People who get plexiform neurofibromas are usually born with a rare genetic disease called neurofibromatosis type 1 (NF1), or von Recklinghausen’s disease. Around 30% to 50% of people who have NF1 will get one or more throughout their life.
Can you go blind with NF1?
Abstract: Neurofibromatosis type 1 is a common autosomal dominant condition that affects about 1 in 5000 people. We describe a 75-year-old man who, in addition to many classic developmental changes of the disease in his skin, eyes and nervous system, had blindness in his right eye as a complication.
How fast do plexiform neurofibromas grow?
The median rate of growth of the individual tumours expressed as a percentage of the volume measured on the first exam was 2.8% per year, with a range of −35.9% to 3667% per year.
Are plexiform neurofibromas painful?
Abstract. Plexiform neurofibromas (PNs) are common and potentially debilitating complications of neurofibromatosis 1 (NF1). These benign nerve-sheath tumors are associated with significant pain and morbidity because they compress vital structures.
What are plexiform lesions?
Plexiform lesions are glomus-like structures that emerge at right angles from a muscular artery and bulge into a plexus of channels whose walls consist of fibrous tissue covered by endothelial cells.
What is the average life expectancy of someone with NF1?
Mean and median ages at death for persons with NF1 were 54.4 and 59 years, respectively, compared with 70.1 and 74 years in the general population.
Does neurofibromatosis worsen with age?
Neurofibromas may increase in number with age. Bone deformities. Abnormal bone development and a deficiency in bone mineral density can cause bone deformities such as a curved spine (scoliosis) or a bowed lower leg. Tumor on the optic nerve (optic glioma).