carcinomatous myopathy
Noun: A specific neuromuscular disorder, classified as a paraneoplastic syndrome, that occurs as a remote effect of cancer, most commonly lung cancer. It is characterized by progressive muscle weakness, particularly in the proximal muscles of the hips and thighs, and is often accompanied by back pain. The underlying cause is the body's production of antibodies that mistakenly attack the neuromuscular junctions.
This is a highly specialized medical term used primarily in clinical, neurological, and oncological contexts to describe a specific complication associated with malignancy. - It functions as a singular noun (e.g., carcinomatous myopathy). - It is typically used to specify the type of myopathy (muscle disease) a patient has developed.
- The patient's increasing fatigue and difficulty climbing stairs led the neurologist to suspect carcinomatous myopathy.
- A diagnosis of carcinomatous myopathy often prompts a search for an underlying occult carcinoma.
- The symptoms of carcinomatous myopathy can sometimes appear before the cancer itself is detected.
- The term is often discussed in the context of paraneoplastic syndromes, which are disorders triggered by an immune response to a neoplasm.
- It is sometimes used interchangeably with or considered a subset of Lambert-Eaton myasthenic syndrome (LEMS), although LEMS has a more specific electrophysiological and antibody profile.
- Myopathy (n): A general term for any disease of the muscle tissue.
- Paraneoplastic syndrome (n): A group of disorders that are consequences of cancer but are not caused by the local presence of tumor cells.
- Proximal myopathy (n): A myopathy affecting the muscles closest to the body's trunk (shoulders, hips).
- Paraneoplastic myopathy (n): A more general synonym emphasizing the cause.
- Cancer-associated myopathy (n): A descriptive synonym.
This term has a single, precise medical meaning. It does not have idiomatic or phrasal verb uses due to its technical nature. Its definition is strictly tied to its pathological cause (cancer) and its clinical presentation (specific muscle weakness and fatigue).
- a disease seen in patients with lung cancer and characterized by weakness and fatigue of hip and thigh muscles and an aching back; caused by antibodies directed against the neuromuscular junctions