Intravascular Large B-cell Lymphoma: A Report of Two Cases.

One of the rare variants of extranodal large B-cell lymphoma is intravascular large B-cell lymphoma (IVLBCL). Characteristics of IVLBCL include intraluminal selective proliferation of atypical lymphoid cells in small to medium-sized vessels. The etiologic of IVLBCL is unknown, but due to the growth pattern of this tumor, it is speculated that IVLBCL is caused by a defect in homing receptor of tumor cells.

Disseminated TB in an Immunocompetent Patient: A Case Report.

Tuberculosis considered as a chronic infectious disease caused by Mycobacterium tuberculosis, may invade all organs but mainly affects the lungs. Overall, disseminated TB is rare in immunocompetent patients and its association with seborrheic keratosis has never been reported. ; Case Presentation: We reported a 54-year-old man with a complaint prolonged fever, abdominal pain, weight loss and lymphadenopathy without any immunosuppression who was eventually treated based on the diagnosis of diffuse tuberculosis.