In some cases, myopathies can be caused by a malfunctioning endocrine gland that produces either too much or too little of the chemical messengers called hormones.
Thymus gland-An endocrine gland located in the upper chest just below the neck that functions as part of the lymphatic system.
Thyroid gland-An endocrine gland in the neck overlying the windpipe (trachea) that regulates the speed of metabolic processes by producing a hormone, thyroxin.
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