mixed lacrimal gland tumor
Introduction
Introduction to lacrimal adenocarcinoma Lacrimal gland tumors have the highest incidence in primary tumors of the sputum, and lacrimal adenocarcinoma is the most common one, both benign and malignant. Benign lacrimal gland mixed tumors are more common in middle-aged people. They have a long course of disease and are derived from lacrimal gland ducts or acinus. They can also originate from the lacrimal gland and congenital embryonic tissue residues (laryngeal primordium). The malignant lacrimal gland mixed tumor lacks or has no intact capsule. The lumps and the gingival margins are adhered, and the adhesions of the adhesions are tender. The tumor tissue has a structure of cancerous tissue in addition to the structure of benign lacrimal gland mixed tumors. The tumor tissue infiltrates into the sputum, destroys the bone, and can cause systemic metastasis. In severe cases, it is transferred to the brain and endangers life. basic knowledge The proportion of illness: 0.003% Susceptible people: more common in middle-aged people Mode of infection: non-infectious Complications: lacrimal cystic adenocarcinoma
Cause
Lacrimal gland mixed tumor etiology
In most cases, glandular tissue is seen in the mucous parenchyma. It is composed of two layers of epithelial tissue. The inner layer of the epithelium secretes mucus material, which can cause squamous metaplasia of the squamous epithelium. , fibrous or cartilage-like metaplasia, adenoma from the acinus of the lacrimal gland or epithelial cells of the duct, which can cause various changes in the interstitial, presenting complex tissue changes.
Prevention
Lacrimal gland mixed tumor prevention
1. Understand the risk factors of tumors, and formulate corresponding prevention and treatment strategies to reduce the risk of cancer. We are currently facing the focus of cancer prevention and treatment.
2, should first focus on and improve those factors closely related to our lives, such as smoking cessation, reasonable diet, regular exercise and weight loss.
3, appropriate exercise, enhance physical fitness, improve their disease resistance. Anyone who follows these simple and reasonable lifestyles can reduce their chances of developing cancer.
Complication
Lacrimal gland mixed tumor complications Complications of lacrimal cystic adenocarcinoma
Be aware that cancer may occur. A very important cause of carcinogenesis is due to mutations in the genome of the cell, followed by abnormalities in cell growth and division, and the transmission of defective genetic material until the appearance of cancerous tissue. Carcinogenesis does not occur immediately, but gradually evolves due to dysplasia of normal cells in the lesion.
Symptom
Symptoms of lacrimal gland mixed tumors Common symptoms Visually impaired eyeballs, ptosis, ptosis, retinoscopy
1. Eyeball protrusion and eye movement disorder: the lacrimal gland mixed tumor originating from the lacrimal gland of the ankle, invading the subepithelial and the conjunctiva of the iliac crest, the mass is easy to be found early and sputum, and can cause the ptosis of the sac, the lacrimal gland mixed tumor of the ankle, early no Symptoms, as the tumor grows, it can be hard and irregular in the upper part of the eyelid margin. It has mobility, generally no adhesion to the skin and the gingival margin, and then the eyeball is displaced to the front and the inside and below, and has outward , upward movement obstacles.
2, visual impairment: early visual acuity has no obvious changes, may have double vision, with the development of the course of the disease, there may be vision loss, the reason may be tumor oppression caused by the eye caused by obvious astigmatism, or exposed keratitis, may also be optic nerve involvement .
Examine
Examination of lacrimal adenocarcinoma
1, fundus examination: sometimes visible papilledema, venous filling and retinal folds.
2, bone changes: X-ray film, CT examination, generally see the local expansion of the lacrimal gland, bone absorption or full eyelid enlargement, bone wall thinning, but no bone destruction.
Diagnosis
Diagnosis and differentiation of lacrimal adenocarcinoma
Common lacrimal gland diseases are common benign lacrimal adenocarcinomas in the tumor. The malignant is lacrimal adenocarcinoma. The former accounts for about half of the lacrimal gland tumors. The clinical manifestations of the lacrimal gland can touch the mass. The eyeballs protrude and are pushed to the lower part of the nose. In addition to the above performance, the X-ray film shows bone destruction, the lesion develops rapidly, and the nodular mass can be touched in the lacrimal gland. It should be surgically removed and pathologically examined as soon as possible. If it is malignant, it must be considered. Excavation, parallel radiation therapy.
