Medical Terminology Chapter 14

endocrine

to secrete within

endocrinology

the study of the endocrine system

pituitary gland

hypophys/o, pituitar/o

gland

aden/o

lobe

lob/o

hypothalamus

under thalamus

thyroid gland

thyr/o, thyroid/o

calcium

calc/o

parathyroid gland

parathyroid/o

adrenal gland

adren/o

suprarenal

pertaining to above the kidney

cortex

cortic/o

medulla

medull/o

pancreas

pancreat/o

exocrine

to secrete outward

glucose, sugar

gluc/o, glyc/o

ketone

ket/o, keton/o

thymus gland

thym/o

anorexia

lack of appetite

exophthalmia

protrusion of eyeballs from their orbits

glucosuria

presence of glucose in the urine

goiter

enlargement of the thyroid gland

hirsutism

abnormal hairiness, especially in women

hypocalcemia

condition of deficient calcium in the blood

hyopglycemia

condition of deficient sugar in the blood

hypokalemia

condition of deficient potassium in the blood

hyponatremia

condition of deficient sodium in the blood

ketoacidosis

excessive number of ketone acids in the bloodstream

ketonuria

presence of ketones in urine

paresthesia

abnormal sensation, such as prickling

polydipsia

condition of excessive thirst

polyphagia

condition of excessive appetite

polyuria

condition of excessive urination

tetany

continuous muscle spasms

acromegaly

hypersecretion of somatotropin from the adenohypophysis during adulthood; leads to enlargement of the extremities, jaw, nose, and forehead

diabetes insipidus

deficiency of ADH, which causes the patient to excrete large quantities of urine and exhibit excessive thirst

gigantism

hypersecretion of somatotropin from adenohypophysis during childhood, leading to excessive growth

growth hormone deficiency

somatotropin deficiency due to dysfunction of adenohypophysis during childhood results in dwarfism

panhypopituitarism

deficiency or lack of all pituitary hormones causing hypotension, weight loss, weakness and loss of libido

syndrome of inappropriate antidiuretic hormone (SIADH)

oversecretion of ADH from the neurohypophysis leading to severe hyponatremia and the inability to excrete diluted urine

Hyperthyroidism

excessive thyroid hormone production; also called thyrotoxicosis

hyopthyroidism

deficient thyroid hormone production

hyperparathyroidism

overproduction of PTH; symptoms include polyuria, hypercalcemia, hypertension and kidney stones

hypoparathyroidism

deficient PTH production results in tetany; hypocalcemia, irritability and muscle cramps

Addision disease

insufficient secretion of adrenal cortisol from the adrenal cortex is manifested by gastric complaints, hypotension, fatigue and hyperpigmentation of skin and mucous membranes

Cushing disease

Excessive secretion of cortisol by the adrenal cortex causes symptoms of obesity, leukocytosis, hirsutism, hypokalemia, hyperglycemia and muscle wasting

diabetes mellitus

DM is a group of metabolic disorders characterized by high glucose levels that result from inadequate amounts of insulin, resistance to insulin or a combination of both

type 1 diabetes

lack of insulin production

type 2 diabetes

deficient insulin production with symptoms similar to type 1 diabetes

hyperinsulinism

oversecretion of insulin

gestational diabetes

insulin resistance acquired during pregnancy

prediabetes

a condition in which an individual's blood glucose level is higher than normal, but not high enough for a diagnosis of type 2 diabetes

pheochormocytoma

usually benign tumor of the adrenal medulla

prolactinoma

most common type of pituitary tumor

thymoma

noncancerous tumor of epithelial origin that is often associated with myasthenia gravis

islet cell carcinoma

also called pancreatic cancer

malignant thymoma

rare cancer of the thymus gland

thyroid carcinoma

the most common type of thyroid carcinoma are follicular and papillary

A1c

measure of average blood glucose during a 3-month time span. Used to monitor response to diabetes treatment

fasting plasma glucose (FPG)

After a period of fasting, blood is drawn. The amount of glucose present is used to measure the body's ability to breakdown and use glucose

glucometer

an instrument for measurement of blood sugar

hormone tests

measure the amount of ADH, cortisol, GH or PTH in the blood

oral glucose tolerance test (ORTT)

blood test to measure the body's response to a concentrated glucose solution. May be used to diagnose DM or gestational diabetes

radioimmunoassay (RIA) studies

nuclear medicine tests used to tag and detect hormones in the blood through the use of radionuclides

thyroid function tests (TFT)

Blood tests done to assess T3, T4 and calcitonin

total calcium

measures the amount of calcium in the blood

urinalysis (UA)

physical, chemical and microscopic examination of urine

urine glucose

used as a screen for or to monitor DM

urine ketones

test to detect presence of ketones in a urine specimen; may indicate DM or hyperthyroidism

CT scan

may be used to test for bone density in hypoparathyroidism and the size of the adrenal glands in Addison disease

MRI

may be used to examine changes in the size of soft tissues

radioactive iodine uptake (RAIU) scan

may be used to test thyroid function by measuring the gland's ability to concentrate and retain idodine

radiography

x-rays are done to examine suspected endocrine changes that affect the density or thickness of bone

sonography

aside from visualizing the pancreas, sonography may be used to guide biopsies of the thyroid gland to discern the differences between solid and fluid-filled cysts

adrenalectomy

bilateral removal of the adrenal glands to reduce excess hormone secretion

hypophysectomy

excision of the pituitary gland, usually done to remove a pituitary tumor

pancreatectomy

excision of all or part of the pancreas to remove a tumor or to treat the intractable inflammation of the pancreas

pancreatoduodenectomy

excision of the head of the pancreas together with the duodenum; used to treat pancreatic cancer

parathyroidectomy

removal of the parathyroid gland, usually to treat hyperparathyroidism

throidectomy

removal of part or all of the thyroid gland to treat goiter, tumor or hyperthyroidism that does not respond to medication