What Is Increased Pulmonary Permeability? Increased pulmonary permeability is a mucosal defect in the lung characterized by alteration of the normally tight epithelial blood-air barrier in the lung apparently caused by inflammation. Q: What is the blood-air barrier in the ...
Read More »Abscess Formation Causing Lung Cavities
What Is Abscess Formation Causing Lung Cavities? Abscess formation and subsequent lung cavities that develop from necrosis (death) of affected lung tissue constitute severe life-threatening respiratory disease of the lung. Q: What is the difference between lung abscess and lung ...
Read More »Penicillin V Impaired Absorption in Children
What Is Penicillin V Impaired Absorption In Children? Penicillin V impaired absorption in children is characterized by lack of ability to absorb the oral antibiotic medicine, penicillin V, from the small intestine. Q: What is penicillin V? A: Penicillin V ...
Read More »Osteopenia In Childhood
What Is Osteopenia In Childhood? Osteopenia is a metabolic bone disorder characterized by diminished bone mass with the retention of normal cell appearance and high bone turnover. That is, bone production does not keep up with bone loss. Bones looks ...
Read More »Osteonecrosis
What Is Osteonecrosis? Osteonecrosis is a bone disorder resulting from insufficient blood flow to a part of the skeleton and is characterized by resulting death of bone cells (necrosis). After a while the bone can collapse. If this condition is ...
Read More »Osteomalacia
What Is Osteomalacia? Osteomalacia is a metabolic bone disorder that causes abnormal skeletal changes characterized by generalized reduction in bone density (bone softening) in adults and pseudofractures (apparant on x-ray) with muscular weakness and bone tenderness. Bones have the normal amount of ...
Read More »Osteitis Fibrosa Cystica
What Is Osteitis Fibrosa Cystica? Osteitis fibrosa cystica is a metabolic bone disease characterized by decalcification and softening of bones with bone cyst formation and bone tumors developing from effects of chronic vitamin D deficiency causing hyperparathyroidism and parathyroid adenoma ...
Read More »Bone Pain
What Is Bone Pain? Bone pain is pain or tenderness in bone tissue. Bone pain intensity and location depend on the causative disorder. Q: What are causative disorders of bone pain? A: Bone pain is a feature of various disorders ...
Read More »Pneumococcal Septicemia
What Is Pneumoccocal Septicemia? Pneumococcal septicemia (sepsis) is a life-threatening syndrome characterized by a cascade of systemic (body-wide) inflammatory responses to lung infection caused by bacterial infection spread to the bloodstream. It is fatal in about 40% of cases, showing ...
Read More »Brain Atrophy
What Is Brain Atrophy? Brain atrophy is a degenerative condition of the brain characterized by loss of brain tissue, causing the brain to shrink. Q: How does loss of brain tissue affect the body? A: Loss of brain tissue will ...
Read More »Hyposplenism
What Is Hyposplenism? Hyposplenism is the condition resulting from having lost spleen tissue, called atrophy of the spleen. Spleen atrophy impairs splenic functions or activities because there are insufficient tissues to do the work required. Q: What splenic functions are ...
Read More »Lymphadenopathy
What Is Lymphadenopathy? Lymphadenopathy is an alteration of lymph nodes that is characterized by enlargement of lymph nodes greater than 1.5 cm caused by proliferation (increased production) of lymphocytes within the node. Q: What are lymph nodes? A: Lymph nodes ...
Read More »Lymphomas, Extraintestinal
What Are Extraintestinal Lymphomas? Extraintestinal lymphomas (non-Hodgkin’s) are malignancies that arise in peripheral lymphatic tissue outside the intestinal tract from B-cell and T-cell lymphocytes. Q: What is peripheral lymphatic tissue? A: Peripheral lymphatic tissue includes lymph vessels, lymph, lymph nodes, and ...
Read More »Celiac Disease, Refractory
What Is Refractory Celiac Disease? Refractory celiac disease, formerly called refractory sprue, is a severe complication characterized by persistence of symptoms and intestinal inflammation despite gluten free diet after 12 months.1 Refractory celiac disease appears in two forms, ulcerative jejunitis (RCD ...
Read More »Lymphoma, B-Cell Non-Hodgkin’s
What Is B-Cell Non-Hodgkin’s Lymphoma? Bcell non-Hodgkin’s lymphoma is a malignant, monoclonal (arising from a single cell) proliferation of lymphocytes that is preceded by lymphadenopathy and characterized by varying, less predictable spread than Hodgkin’s disease. Lymphadenopathy is enlargement of lymph ...
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