I believe they mean that the random variables have a common support. For example, if X ~ Unif[0,2] and Y ~ Unif[1,3], then their respective PDF's overlap in the interval [1,2], meaning the only interval where both X and Y can have common values is [1,2]. To illustrate, below is a representation of the supports of X and Y, below which is a representation of the real line.
1 Thyroid cancer is a malignant tumor of the thyroid gland. 2  Symptoms of thyroid cancer include swelling in the neck (goiter), neck pain, hoarseness, swallowing and breathing problem, swollen lymph gland in the neck.
Overview. The thyroid, located at the front of your neck, is a small butterfly shaped gland that is part of the bodyâs endocrine system. A swollen thyroid, or goiter, occurs when the gland swells to larger than normal.Large goiters, seen or felt at the base of the neck, may cause tightness in the throat, hoarseness, and difficulty breathing or swallowing.A swollen thyroid can increase or decrease the production of thyroid hormone and can present additional symptoms.arge goiters, seen or felt at the base of the neck, may cause tightness in the throat, hoarseness, and difficulty breathing or swallowing. A swollen thyroid can increase or decrease the production of thyroid hormone and can present additional symptoms.