MedGen

A rare ophthalmic disorder characterized by idiopathic orbital inflammation in which the specific target tissue is the optic nerve sheath. Patients typically present with ocular pain, pain on eye movement, visual symptoms with loss of vision progressing over several weeks, dyschromatopsia, and variable visual field defects. Orbital signs and symptoms may be present and include ptosis, ophthalmoplegia, and exophthalmos. Optic disc edema is observed in most cases. The condition is usually unilateral. [from ORDO]

A neoplasm characterized by the proliferation of neoplastic mesothelial cells. It usually arises from the pleura or peritoneum. This category includes malignant mesothelioma, adenomatoid tumor (benign mesothelioma), well differentiated papillary mesothelial tumor, and multicystic mesothelioma. [from NCI]

Malignant mesothelioma that arises from the pleura. It is characterized by the presence of spindle cells. Anaplastic morphologic features and multinucleated malignant cells may also be seen. [from NCI]

Malignant mesothelioma that arises from the pleura. It is characterized by the presence of cells with epithelioid morphology. The epithelioid cells usually have eosinophilic cytoplasm, bland nuclei, and form tubulopapillary, microglandular, or sheet-like patterns. [from NCI]

A malignant mesothelioma originating from cells of the pleura (the thin layer of mesothelium lining the lungs). Pleural mesothelioma is the most common form of mesothelioma. [from HPO]

A malignant neoplasm arising from mesothelial cells. It is characterized by the presence of cells with epithelioid morphology. The epithelioid cells usually have eosinophilic cytoplasm, bland nuclei, and form tubulopapillary, microglandular, or sheet-like patterns. [from NCI]

Malignant mesothelioma is an aggressive neoplasm of the serosal lining of the chest etiologically linked to asbestos. It is diagnosed in approximately 2,000 to 3,000 individuals annually in the United States, most of whom die within 2 years of diagnosis (summary by Bott et al., 2011). See also 614327 for a tumor predisposition syndrome that may contribute to the development of malignant mesothelioma upon asbestos exposure and is caused by germline mutation in the BAP1 gene (603089) on chromosome 3p21. [from OMIM]

A benign or malignant neoplasm that involves the serous membrane that lines the lungs and thoracic cavity. Most pleural neoplasms are metastatic. Diffuse malignant mesothelioma is the most common primary malignant neoplasm of the pleura. [from NCI]

A benign or malignant, primary or metastatic neoplasm involving the tissues of the thorax. [from NCI]

A tumor (abnormal growth of tissue) of the respiratory system. [from HPO]

A non-neoplastic or neoplastic disorder that affects the pleura. Representative examples include pleural infection, pleural mesothelioma, and pleural solitary fibrous tumor. [from NCI]

A usually malignant and aggressive neoplasm of the mesothelium which is often associated with exposure to asbestos. [from MONDO]

Tumor of the lung. [from HPO]

A neoplasm arising from the epithelium. It may be encapsulated or non-encapsulated but non-invasive. The neoplastic epithelial cells may or may not display cellular atypia or dysplasia. In the gastrointestinal tract, when dysplasia becomes severe it is sometimes called carcinoma in situ. Representative examples are pituitary gland adenoma, follicular adenoma of the thyroid gland, and adenomas (or adenomatous polyps) of the gastrointestinal tract. [from NCI]