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Paraneoplastic syndrome. A paraneoplastic syndrome is a syndrome (a set of signs and symptoms) that is the consequence of a tumor in the body (usually a cancerous one). [1] It is specifically due to the production of chemical signaling molecules (such as hormones or cytokines) by tumor cells or by an immune response against the tumor. [2]
Constitutional Symptoms. Unexplained pain: Pain that persists, has no clear cause, and does not respond to treatment may be a warning sign of many types of cancers. Unexplained night sweats or fever: These may be signs of an immune system cancer. Fever in children rarely points to malignancy, but may merit evaluation.
An eye neoplasm is a tumor of the eye. [1] A rare type of tumor, [2] eye neoplasms can affect all parts of the eye, and can either be benign or malignant ( cancerous ), in which case it is known as eye cancer. [3] Eye cancers can be primary (starts within the eye) or metastatic cancer (spread to the eye from another organ).
Frequency. ~20% [5] Dry eye syndrome, also known as keratoconjunctivitis sicca, is the condition of having dry eyes. [2] Symptoms include dryness in the eye, irritation, redness, discharge, blurred vision, and easily fatigued eyes. Symptoms range from mild and occasional to severe and continuous. [3]
1:30,000 to 1:50,000. Leber's hereditary optic neuropathy ( LHON) is a mitochondrially inherited (transmitted from mother to offspring) degeneration of retinal ganglion cells (RGCs) and their axons that leads to an acute or subacute loss of central vision; it predominantly affects young adult males. LHON is transmitted only through the mother ...
Signs and symptoms. Orbital cellulitis commonly presents with painful eye movement, sudden vision loss, chemosis, bulging of the infected eye, and limited eye movement. Along with these symptoms, patients typically have redness and swelling of the eyelid, pain, discharge, inability to open the eye, occasional fever and lethargy. Complications
Retinal hemorrhage (UK English: retinal haemorrhage) is a disorder of the eye in which bleeding occurs in the retina, the light sensitive tissue, located on the back wall of the eye. There are photoreceptor cells in the retina called rods and cones , which transduce light energy into nerve signals that can be processed by the brain to form ...
Papilledema. Papilledema or papilloedema is optic disc swelling that is caused by increased intracranial pressure due to any cause. [1] The swelling is usually bilateral and can occur over a period of hours to weeks. [2] Unilateral presentation is extremely rare. In intracranial hypertension, the optic disc swelling most commonly occurs ...