Spherical cysts visible in the vitreous

Introduction In patients with vitreous cysticercosis, the vitreous is turbid to varying degrees, and translucent light gray or light blue spherical capsules are visible in the vitreous, and the center often has a grayish white or yellowish white round spot, which is the head of the cystic sac, sometimes It can be seen that cysticercosis creeps in the vitreous.

Cause

The path of the disease is caused by the patient ingesting the pork containing the unkilled aphid eggs. The outer shell of the aphid eggs is digested by the duodenal juice, and the six hookworms are drilled into the intestinal wall and spread throughout the body with the blood circulation. And form cysticercosis.

The cysticercosis continues to develop in the human intestines. First, the head section with small hooks and suction cups is turned out of the capsule, and the hooks and suction cups are hooked on the wall of the human small intestine to absorb nutrients. After 2 to 3 months, it can develop into an adult. The cysticercosis of pork aphids can be parasitic in the muscles of the pigs, brains, eyeballs, etc., causing cysticercosis.

an examination

Related inspection

Eye and sacral area CT examination eye function examination

1. History: A history of raw pork with food infected with cercaria.

2. Vision: Early consciously, the black shadow fluttered in the front, and the visual acuity decreased in the later stage.

3. Vitreous examination: the vitreous is turbid to varying degrees, and the translucent light gray or light blue spherical capsule can be seen in the vitreous. The center often has a grayish white or yellowish white round spot, which is the head of the cysticercus, sometimes showing cysticerci Creep in the vitreous.

4. Laboratory examination: positive for intradermal test and complement fixation test.

5. Fundus examination: visible yellow-white translucent round vesicles in the vitreous, about 2 ~ 6PD. There is a golden yellow reflective circle around it, and a bright white spotted head is visible in the vesicle. When the light is illuminated, it can cause the head to telescopically move, and sometimes the suction cup can be seen in the telescopic head.

Due to the vitreous opacity, it is not easy to see the typical morphology of cysticercosis, and complications such as retinal detachment may occur. Sometimes cysticercosis can penetrate into the retina and parasitize.

Differential diagnosis

Clinical attention should be paid to the identification of vitreous porcine cysticercosis and vitreous degeneration and vitreous opacity.

Vitreous degeneration and vitreous opacity are mainly manifested by vitreous liquefaction, posterior detachment, and atrophy leading to turbidity. The normal vitreous is a transparent gel, which tends to degenerate with age, mainly showing condensing and liquefaction, which is the result of deagglomeration of mucopolysaccharides. The simple vitreous liquefaction has no obvious symptoms except for the occasional "flying mosquitoes" in front of the eyes.

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