Dr. Mary Lisa Landwehr MD

Recommended Articles

• Mesenteric Adenitis: Symptoms, Causes, and Treatment

  Introduction Mesenteric adenitis is the inflammation of the lymph nodes present in the mesentery, which is the membrane that attaches the small intestine to the abdominal cavity wall. It usually causes abdominal pain, especially in children and teenagers. Lymph nodes contain lymphocytes, which are...

• What's the Difference Between Salt and Sodium?

  IntroductionWhen people say salt, they usually mean the common table salt. Salt is a mineral that is mainly composed of sodium chloride (NaCl). To distinguish table salt from a class of chemical compounds called salts, the terms rock salt or the mineral name halite is used. Sodium is also...

• What Is Olecranon Bursitis?

  Whenever a bursa is inflamed and becomes swollen, it causes a lot of pain around the affected area. The condition is called bursitis. The inflammation and swelling of the bursa are the causes of pain. The bursa is a sac filled with fluid, which is always located between the muscles, tendons, bones,...

• Anemia: Get the Facts

  Our body has three types of blood cells: white blood cells, red blood cells, and platelets. White blood cells (WBCs) or leukocytes are the type of cells that fights off infections in our body. The platelets work by helping our blood clot, and the red blood cells (RBCs) are the ones responsible for...

• Conjunctivitis: When to See an Ophthalmologist and What to Expect

  Our eyes are our windows to the world, and we each get only a single pair in our lifetime. Life without our sense of sight can spell great difficulty. Imagine being born and living with good vision for decades, only to have it impaired by some disease we could have prevented or gotten treatment for....

• When to See Your Doctor About Back Pain

  One of the most common reasons why people visit their doctor is their back pain. According to the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), 8 out of 10 people have some type of back pain. The pain originates in the spine and can manifest in multiple forms. The...