Benign granuloma

Metalhc stents can induce granuloma formation, which might be excessive, particularly in benign strictures. A complication of uncovered stents is tumor growth through the open mesh. In addition, function of covered stents can be impaired by tumor overgrowth at the proximal and distal margins. 

Findings of low importance are considered benign and unlikely to require further medical treatment or additional work-up. Examples include vascular calcifications, granulomas, diverticu-losis, simple solid organ cysts, small to mediumsized hiatal hernias, and abdominal wall hernias containing fat. 

Most soft-tissue masses of the foot are benign non-neoplastic conditions, including ganglion cysts, bursitis, foreign body granuloma, plantar fibromatosis. 

Traditionally, many kinds of particulate matter have not been considered to produce significant structural changes in the respiratory tract and, hence, were traditionally called nuisance dusts. The relative lack of response to particnlate matter was viewed as contrasting with the responses to materials that prodnced a clear adverse effect in the form of granulomas or fibrosis. The pulmonary reaction to these dusts has occasionally been termed a benign pneumoconiosis to distinguish a mild reaction from the very severe pulmonary reaction to a fibro-genic material, such as silica. 

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