An immunoperoxidase staining technique was used for detecting three major iron-binding proteins (transferrin, ferritin, and lactoferrin) in routine histological paraffin sections of human tissue. Transferrin was found mainly in hepatocytes, a variety of epithelial and myoepithelial cells, renal tubular cells, and histiocytes. Ferritin was most readily found in histiocytes and liver cells, with ...

Rosai-Dorfman disease (RDD) is a rare disorder characterized by the proliferation of histiocytes in the sinus of the affected lymph nodes, which leads to massive lymphadenopathy. RDD usually presents as an increased inflammatory response and lymph node swelling. We herein report the case of a hemodialysis patient with a fever, hypercalcemia and increased serum calcitriol level who was histologi...

A monoclonal antibody (B9) was generated by using a rat malignant fibrous histiocytoma (MFH)-derived cloned cell line (MT-8) as the immunogen. Immunohistochemically, B9 reacted specifically with a cytoplasmic antigen of MT-8 cells. Furthermore, B9 immunolabeled another MFH-derived cloned cells (MT-9) and histiocytic sarcoma cells, as well as macrophages/histiocytes in normal and diseased tissue...

By BERNARD CZERNOBILSKY, HOWARD H. FREEDMAN AND ABRAHAM M. FRUMIN F OAMY HISTIOCYTES were found in three of 47 spleens removed for chronic idiopathic thrombocytopenic purpura ( ITP) . Fat stains demonstrated the absence of lipid. These cells have never been reported in ITP except for a brief mention by Carpenter et a!.’ Somewhat similar histiocytes have been described in thalassemia2, and in an...

A 54-year-old man was admitted to the hematology department for exploration of splenomegaly. The blood count showed an isolated normochromic normocytic anemia (9.9 g/dL). Bone marrow aspiration a rich with estimated 35% plasma cell infiltration made up dystrophic cells (plasma flamed cytoplasm, centered nuclei, multinuclearity), making diagnosis multiple myeloma.

S inus histiocytosis with massive lymphadenopathy (Rosai-Dorfman disease [RDD]) is a benign, idiopathic, self-limiting lymphoproliferative disease, described by Rosai and Dorfman in 1969. Extranodal manifestations represent about 43% of cases. The disease is classically accompanied by fever, malaise, leukocytosis, increased erythrocyte sedimentation rate, and hypergammaglobulinemia. Rosai-Dorfm...

Two cases of Whipple's disease are reported in which a parallel course is confirmed between the clinical and ultrastructural findings. This is not so with light microscopy since it takes much longer for these findings to return to normal. In case 1, the presence of bacilli circulating freely in the sinusoid of a lymph node is described. Case 2 demonstrates the existence of special granulomata f...

A seven-year-old patient was admitted to our hospital with the complaints of fever, malaise, and abdominal distention. In the bone marrow aspiration smears, leishmania amastigotes were observed. The patient was diagnosed as having visceral leishmaniasis (VL) and treated with liposomal amphotericin B (L-AMB). The authors report their observation of foamy histiocytes seen in the bone marrow aspir...