“…Russell bodies are eosinophilic inclusions of plasma cells in the cytoplasm, and occasionally in extracellular matrix. 2 Russell bodies, first described in 1890 by Russell are referred to as immunoglobulin-containing inclusions, made by abnormal secretion of plasma cells, characterized by distended rough endoplasmic reticulum. The unusual pattern of inflammation has been reported at other sites also due to prolonged antigenic stimulation, as in gastric mucosa, Barret's esopahgus, chronic lymphocytic thyroiditis, rheumatoid arthritis, and ulcerative colitis.…”