2012年8月20日 星期一

Retinoblastoma is a Cancer of Retina - You Know About This Eye Cancer?


Retinoblastoma is a cancer of the retina. Retinoblastoma is the most common primary ocular malignancy of childhood. Although this disorder can occur at any age, it usually develops in young children. Most cases of retinoblastoma occur in only one eye, but both eyes can be affected. Untreated, retinoblastoma is almost always fatal, hence the importance of early diagnosis and treatment.

Retinoblastoma can occur in two forms:

An inherited form where there are often tumors in both eyes (bilateral) or sometimes only in one eye.

A non-inherited form where there is a tumor in only one eye (unilateral)

Retinoblastoma is related to chromosome 13. Retinoblastoma occurs when a cell of the growing retina develops a mutation in the RB gene (a tumor-suppressor gene). This mutation causes the cell to grow out of control and become cancerous.

Mutations in the RB1 gene are inherited in an autosomal dominant pattern, which means that one copy of the altered gene in each cell is sufficient to increase cancer risk. A person with retinoblastoma may inherit an altered copy of the gene from one parent, or the altered gene may be the result of a new mutation.

The most common way of presentation is a white reflex (leukocoria) behind the pupil. This is sometimes called the cat's eye reflex. A white glow in the eye that is often seen in photographs taken with a flash; instead of the typical "red eye" from the flash, the pupil may appear white or distorted. White spots in the pupil, crossed eyes, A red, painful eye poor vision, the iris may be a different color in each eye.

A few special tests like ultrasonography, CT scan, X-rays, MRI, blood tests, spinal tap, bone marrow biopsy etc. may be done to establish the diagnosis and to find out the extent of the disease.

Treatment options depend upon the size and location of the tumor. Small tumors may be treated by laser surgery. Radiation and chemotherapy may be needed if the tumor has spread beyond the eye. Chemotherapy is the treatment of choice for most unilateral cases.




To know more about us or other details visit at http://www.indiahealthtour.com
Or email to info@wecareindia.com





This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

沒有留言:

張貼留言