C C126598 Thyroid Gland Noninvasive Follicular Neoplasm with Papillary-Like Nuclear Features Follicular Thyroid Tumor A non-invasive neoplasm of thyroid follicular cells with a follicular growth pattern and nuclear features of papillary thyroid carcinoma that has an extremely low malignant potential. These tumors were formerly classified as non-invasive encapsulated follicular variant of papillary thyroid carcinoma or well-differentiated tumor of uncertain malignant potential. (WHO 2017) A benign or malignant thyroid tumor arising from follicular cells. C3414 Thyroid Tumor C118467 Pediatric Endocrine Terminology C C4815 Thyroid Gland Carcinoma Thyroid Carcinoma Thyroid Cancer A carcinoma arising from the thyroid gland. It includes the following main subtypes: follicular, papillary, medullary, poorly differentiated, and undifferentiated (anaplastic) carcinoma. A malignant tumor arising from the epithelial cells of the thyroid gland. C9305 Cancer C118467 Pediatric Endocrine Terminology C C121153 LH-Producing Gonadotroph Adenoma LH-producing Adenoma|Luteinizing Hormone-Producing Adenoma An adenoma of the anterior lobe of the pituitary gland that produces luteinizing hormone (LH). A non-malignant pituitary tumor that produces luteinizing hormone. C45915 Gonadotropin-Producing Adenoma C118467 Pediatric Endocrine Terminology C C121152 FSH-Producing Gonadotroph Adenoma Follicle Stimulating Hormone-Producing Adenoma FSH-producing Adenoma An adenoma of the anterior lobe of the pituitary gland that produces follicle-stimulating hormone (FSH). A non-malignant pituitary tumor that produces follicle stimulating hormone. C45915 Gonadotropin-Producing Adenoma C118467 Pediatric Endocrine Terminology C C121678 Non-Functioning Pituitary Gland Microadenoma Nonfunctional Pituitary Microadenoma A pituitary gland microadenoma not associated with a hormonal syndrome. A non-malignant pituitary tumor with diameter less than 10 millimeters that does not secrete pituitary hormone(s). C4348 Non-Functioning Pituitary Gland Adenoma C118467 Pediatric Endocrine Terminology C C121721 Non-Functioning Pituitary Gland Macroadenoma Nonfunctional Pituitary Macroadenoma A pituitary gland macroadenoma not associated with a hormonal syndrome. A non-malignant pituitary tumor with diameter 10 millimeters or greater that does not secrete pituitary hormone(s). C4348 Non-Functioning Pituitary Gland Adenoma C118467 Pediatric Endocrine Terminology C C45915 Gonadotroph Adenoma Gonadotropin-Producing Adenoma An adenoma of the anterior lobe of the pituitary gland that produces gonadotrophic hormones (FSH and/or LH) or shows evidence towards gonadotroph differentiation. The majority of cases are hormonally non-functional. Clinical manifestations include visual disturbances, hypopituitarism, headache, and acute hemorrhagic necrosis of the pituitary gland. A non-malignant pituitary tumor that produces one or more gonadotropins. C3329 Pituitary Gland Adenoma C118467 Pediatric Endocrine Terminology