Webster's New World Medical Dictionary

hematuria
See 
blood in the urine.
hematuria, gross
Blood in the urine that can be
seen with the naked eye. Hematuria may or may not
be accompanied by pain, but it is always abnormal
and should be further investigated.
hemidiaphragm
Half of the diaphragm, the
muscle that separates the chest cavity from the
abdomen and that serves as the main muscle of res-
piration. The right hemidiaphragm is protected by
the liver and is stronger than the left. The left
hemidiaphragm is more often subject to rupture
and hernia than the right. See also 
diaphragm;
diaphragmatic hernia.
hemiparesis
Weakness on one side of the body.
hemiplegia
Paralysis on one side of the body.
hemithorax
Half of the thorax or, more simply,
one side of the chest.
hemizygous
Having only a single copy of a gene
instead of the customary two copies. All the genes
on the single X chromosome in the male are
hemizygous.
hemochromatosis
An inherited disorder char-
acterized by abnormally high absorption of iron by
the intestinal tract, resulting in excessive storage of
iron, particularly in the liver, skin, pancreas, heart,
joints, and testes. Common early symptoms include
abdominal pain, weakness, lethargy, and weight
loss. The onset of symptoms is usually between 30
to 50 years of age in males and after menopause in
females. The excess iron gives the skin a bronze
color and damages the liver, causing liver scarring
(fibrosis) or cirrhosis, usually after age 40.
Diabetes also occurs due to damage to the pan-
creas. Other findings include congestive heart fail-
ure or arrhythmias, arthritis, and hypogonadism.
Treatment is removal of excess iron by periodic
phlebotomy (removal of blood) to deplete the body
iron. Early diagnosis and treatment before symp-
toms develop prevents all the complications of the
disease. Hemochromatosis is inherited in an auto-
somal recessive manner. Also known as bronze dia-
betes and hereditary hemochromatosis.