How is anterior chamber pigment deposition to return a responsibility?

summary

Anterior chamber pigmentation is mainly seen in the eyes of melanoma, generally ciliary body and choroid. It can also be seen in glaucoma secondary to cataracts in the expansion stage. It usually appears with hyphema and hyphema. It is the most common primary malignant tumor in adults. Most of the patients were 40-60 years old, with unilateral onset. 85% occurred in choroid, 9% in ciliary body and 6% in iris. How is anterior chamber pigment deposition to return a responsibility?

How is anterior chamber pigment deposition to return a responsibility?

The etiology is still unknown, which may be related to race, family and endocrine factors. In the 3706 cases of uveal melanoma followed up by shields for 17 years, 16 cases (0.4%) were pregnant women, aged about 30 years old. All of them were found to be ill in half a month of pregnancy. The relationship between the onset of uveal melanoma and pregnancy and endocrine is still uncertain. Genetic factors: Singh conducted a family survey of 4500 patients with uveal melanoma, and found that there were 27 families with 56 people suffering from the disease, and 0.6% had family history. Other factors: sunlight, some virus infection, contact with some carcinogenic chemicals may be related to the disease.

Corneal perception in the vicinity of choroidal melanoma can be decreased by anterior segment examination. The adjacent sclera and iris vessels can be dilated. Iris can be combined with iris nevus, iris neovascularization, pupil edge pigment eversion. When the tumor necrosis, it can be combined with iridocyclitis, anterior chamber empyema, anterior chamber pigmentation, hyphema and so on. The visual field defect of malignant melanoma was larger than the actual area of tumor. The defect of blue visual field was larger than that of red visual field.

The intraocular pressure is different from the location, size and complications of the tumor. The intraocular pressure can be normal, decreased or increased. Anterior choroidal melanoma extrudes the lens and iris, which can close the angle and produce secondary glaucoma. Tumor necrosis, macrophages phagocytosis of tumor cells, pigment particles or necrotic residue and other free to the anterior chamber, resulting in elevated intraocular pressure. It can also cause neovascular glaucoma due to iris neovascularization or intraocular pressure elevation due to hyphema.

matters needing attention

In general physical examination, choroidal malignant melanoma is most likely to metastasize to the liver through blood circulation. Liver ultrasound exploration and liver scintigraphy can check whether there is tumor metastasis. Similarly, chest X-ray or CT scan, choroidal malignant melanoma in general is a highly malignant tumor, early diagnosis, early enucleation is the most important treatment. There are no special precautions.