Dr. Nabili received his undergraduate degree from the University of California, San Diego (UCSD), majoring in chemistry and biochemistry. He then completed his graduate degree at the University of California, Los Angeles (UCLA). His graduate training included a specialized fellowship in public health where his research focused on environmental health and health-care delivery and management.
Melissa Conrad Stöppler, MD, is a U.S. board-certified Anatomic Pathologist with subspecialty training in the fields of Experimental and Molecular Pathology. Dr. Stöppler's educational background includes a BA with Highest Distinction from the University of Virginia and an MD from the University of North Carolina. She completed residency training in Anatomic Pathology at Georgetown University followed by subspecialty fellowship training in molecular diagnostics and experimental pathology.
Lymph nodes are important part of the immune system.
Lymph nodes are located throughout the body, but visible and palpable only when they are enlarged or swollen.
Lymph nodes are regional, and each group of them corresponds to a particular region of the body and reflects abnormalities in that region.
In general, infections are the most common causes of lymph node enlargement. Other common causes include inflammation and cancers.
Not all swollen lymph nodes are abnormal.
What are lymph nodes?
Lymph nodes are an important component of the body's immune system and help in fighting infections.
They are small, soft, round or oval structures that are found throughout the body and are connected to each other in chain-like (lymphatic chains) fashion by
channels similar to blood vessels. Each individual lymph node is covered by a capsule made up of connective tissue.
Within the capsule, lymph nodes contain certain kinds of immune cells. These cells are mainly lymphocytes, which produce proteins that capture and fight viruses and other microbes, and macrophages, which destroy and remove the captured material.
Where are the lymph nodes located in the body?
Lymph nodes are located throughout the body. Some are directly under the skin
while others are deep inside the body. Even the most superficial (close to the
skin) lymph nodes are usually not visible or palpable (felt by touching), unless
they are swollen or enlarged for some reason.
They are connected to each other by loosely bound lymphatic vessels. Lymph
nodes generally coalesce in different regions in the body where they are
responsible for filtering the blood and performing their immunologic function
for that particular area of the body. Fluid from the lymphatic vessels
eventually feeds into the venous system (veins) in the body.
Having a sore throat can be a symptom of many conditions, and many people
wonder if their own sore throat might be a sign of something more serious than
the common cold. Specifically, infectious mononucleosis ("mono") and infection
with Streptococcus bacteria ("strep throat") are two conditions that both
produce an extremely painful sore throat.
Like the common cold, infectious mononucleosis is caused by a viral
infection. The virus responsible for mono is called the Epstein-Barr virus,
abbreviated EBV. EBV is a very common virus worldwide, and studies show that up
to 95% of the U.S. population has been infected with EBV at some point in their