Eye melanoma early symptom picture?

summary

Ocular melanoma 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. The clinical symptoms may include visual field defect, decreased visual acuity, pain or inflammation. Eye melanoma early symptom picture? Let's talk about it.

Eye melanoma early symptom picture?

1. B-ultrasound: hypoechoic mass on choroid. The display ability of small lesions (less than 3 mm) is better than that of CT and MRI, but it is not good for lesions located in ciliary body.

2. CT findings: high density protuberance in the inner side of eye ring, smooth and sharp edge, mild to moderate enhancement. When accompanied with subretinal exudation or hemorrhagic dissection, the relative low density on both sides of the mass was seen, and there was no enhanced crescent shadow.

3. MR findings: T1 signal of tumor was higher than that of vitreous body, T2 weighted image signal was lower than that of vitreous body (short T1 and short T2, which was related to the content of paramagnetic substance melanin). T1 and T2 showed high signal area, which was better than CT, but it was not easy to distinguish from tumor. Scleral invasion showed low signal on T1 weighted image and high signal area in sclera.

matters needing attention

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