argue that apart from aortic valve stenosis, some other conditions that feature high shear stress might also increase the risk of bleeding from angiodysplasia. Diagnosis
Fecal occult blood testing is positive when bleeding is active. If bleeding is intermittent the test may be negative at times.Diagnosis of angiodysplasia is often accomplished with endoscopy, either colonoscopy or esophagogastroduodenoscopy (EGD). Although the lesions can be notoriously hard to find, the patient usually is diagnosed by endoscopy. A new technique, pill enteroscopy, has been a major advance in diagnosis, especially in the small bowel which is difficult to reach with traditional endoscopy. With this technique a pill that contains a video camera and radio transmitter is swallowed, and pictures of the small intestine are sent to a receiver worn by the patient. Recently, multiphase CT angiography (without positive oral contrast) has been shown to play a promising role in the diagnoses of small and large bowel angiodysplasia, especially when associated with active hemorrhage.Angiodysplasiae in the small bowel can also be diagnosed and treated with double-balloon enteroscopy, a technique involving a long endoscopic camera and overtube, both fitted with balloons, that allow the bowel to be accordioned over the camera.In cases with negative endoscopic findings and high clinical suspicion, selective angiography of the mesenteric arteries is sometimes necessary, but this allows for interventions at time of the procedure.
Exposure is common for people working in tunneling, quarrying, construction, sandblasting, roadway repair, mining, and foundry work. Silo-fillers disease
Silo-fillers disease (not to be confused with farmers lung associated with inhalation of biologic dusts) results from inhalation of nitrogen dioxide (NO2) gas from fresh silage. The presentation is variable depending on level of exposure. Often the gas penetrates throughout the lung and if severe can manifest as a form of acute respiratory distress syndrome, such as significant pulmonary edema, hyalinized alveolar membranes, congestion and other respiratory illnesses. Tobacco smoke
Tobacco smoke is a known carcinogen. Workers in the hospitality industry may be exposed to tobacco smoke in the workplace, especially in environments like casinos and bars/restaurants. Infectious exposure
Influenza
Health care professionals are at risk of occupational influenza exposure; during a pandemic influenza, anyone in a close environment is at risk, including those in an office environment. Tuberculosis
Tuberculosis is a lung disease endemic in many parts of the world. Health care professionals and prison guards are at high risk for occupational exposure to tuberculosis, since they work with populations with high rates of the disease. Others
World Trade Center lung
World Trade Center lung is a cluster of diseases caused by exposure to fallout at Ground Zero of the September 11 attacks in 2001. These diseases include asthma, asthmatic bronchitis, terminal airways disease, sarcoidosis, and acute eosinophilic pneumonia. Examples
Pneumoconiosis
Asbestosis
Baritosis
Bauxite fibrosis
Berylliosis
Caplans syndrome
Chalicosis
Coalworkers pneumoconiosis (black lung)
Siderosis
Silicosis
Byssinosis
Hypersensitivity pneumonitis
Bagassosis
Bird fanciers lung
Farmers lung


== References ==