cutaneous cysticercosis
Introduction
Introduction to skin cysticercosis Cysticercosiscutis is a skin disease caused by the larvae of the genus Taeniasolium (the cysticercosis) living in the subcutaneous tissue. The pig is a natural intermediate host and the human can also be an intermediate host. basic knowledge Sickness ratio: 0.05% Susceptible people: no special people. Mode of transmission: insect vector transmission Complications: Pericardial cysts Hepatic hydatid cysts
Cause
Causes of skin cysticercosis
Dietary factors (85%):
People who eat uncooked cysticercosis parasites or raw water or food contaminated with eggs, vegetables, hatch in the gastrointestinal tract into six hooks, spread through the lymph or blood to the body, develop into cysticercosis, the disease When the cyst occurs in the subcutaneous tissue, it is mainly characterized by nodules, which occur in deep tissues and muscles of the extremities, which may cause the affected limb to appear as a skin-like enlargement.
Environmental factors (15%):
Indirect or indirect contact with the patient's excrement containing eggs is not promptly cleaned and disinfected, causing the cysticercosis to enter the day and infect the disease.
Prevention
Skin cysticercosis prevention
Strictly implement the meat inspection system and food hygiene, strengthen the education of meat processing personnel and animal husbandry personnel, pay attention to pest control and disinfection work.
Complication
Complications of skin cysticercosis Complications Pericardial cysts Hepatic hydatid cysts
Eyes, brain and heart, liver, lungs and other internal organs can be involved.
Symptom
Skin cysticercosis symptoms common symptoms cyst nodules calcification tension
When the cyst occurs in the subcutaneous tissue, it mainly manifests as nodules. It can have peas to chestnuts or larger, round or oval, smooth and elastic surface, can swim, no symptoms, no inflammation and pigment. Changes, which occur in deep tissues and muscles of the extremities, can cause the affected limb to appear as a skin-like enlargement, and can also invade the limbs, neck, breasts and genitals, eyes, brain and heart, liver, lungs and other internal organs. Being involved.
After cystic sac death, it can be calcified. It can be confirmed by radiographic development that the palpation of the cyst is fluctuating. When the puncture is taken out, the transparent white milky liquid is taken out. The number of cysts can vary from several to several hundred. After slow, gradually increase with age. Increase the increase, the position is uncertain, more common in the trunk, upper limbs, can also invade the limbs flexion, neck, breast and genitals, eyes, brain and heart, liver, lungs and other internal organs can be involved, causing the corresponding symptoms.
Examine
Examination of skin cysticercosis
Eosinophil counts are often significantly increased; sterile fresh cysts (1:1000) 2ml intradermal injection, a few hours after the injection site erythema or vesicles are positive, if the result is negative, can increase the concentration and then test; complement binding The reaction and precipitation reaction also contribute to the diagnosis.
Histopathology: It can be seen that the wall of the capsule is composed of multiple layers of connective tissue membrane. The inner layer is a parenchyma membrane with clarified liquid and larvae. If the worm is dead, it can be calcified.
Diagnosis
Diagnosis and differentiation of skin cysticercosis
diagnosis
The diagnosis of this disease mainly depends on biopsy, a history of intestinal mites, or the presence of mites in the feces or the gestational age.
Differential diagnosis
1. The powder tumor is isolated, soft in nature, free from fluctuations, and contains solid matter.
2. The sweat cyst tumor is formed from a single layer of connective tissue membrane containing a light yellow liquid, which is caused by sweat retention, and the biopsy is easy to distinguish.
3. Neurofibroma is soft, with thin stems attached to the nerves, often accompanied by pigmented mother spots, local pigmentation and freckles, and no cysts or larvae.
