OBJECTIVETo study the clinicopathological features of primary splenic histiocytic sarcoma.

METHODSClinicopathological characterstics were analyzed in a case of primary splenic histiocytic sarcoma and related literatures were reviewed.

RESULTSA 69-year old woman had unexplained debility and palpitation after exertion for a month. CT showed splenomegaly with multiple occupancy. The resected spleen measured 28 cm × 18 cm × 10 cm. Histopathological examination demonstrated that the neoplastic cells diffusely infiltrated splenic sinus. The neoplastic cells were characterized by well-defined cell contour, large pleomorphic nuclei, prominent nucleoli, and abundant eosinophilic cytoplasm. Tumor cells with cytoplasmic vacuoles and intense hemophagocytosis were observed. These cells strongly expressed histiocytic markers CD68 and CD163. Immunostaining for LCA, Vim was positive, but negative for CD1a, S-100, CD30, CK, CD20, CD3, CD21.

CONCLUSIONSImmunohistochemistry plays a key role in the diagnosis of primary splenic histiocytic sarcoma.

No abstract available.
Bone Marrow* ; Histiocytic Sarcoma*

No abstract available.
Granuloma, Plasma Cell* ; Histiocytic Sarcoma*

Two cases of malignant histiocytosis, in which skin involvement was a prominent finding at initial clinical presentation, are reported. 1nteresting histopathologic findings, including Langerhans granule in one case and numerous eosinophils in another, were observed. In one case remission was achieved with BACOP chemotherapy (Bleomycin, Adriamycin, Cyclophosphamide, Vincristine, and Prednisone). In the other case, the patient died nine months after the onset of the disease without any treatment.
Cyclophosphamide ; Doxorubicin ; Drug Therapy ; Eosinophils ; Histiocytic Sarcoma* ; Humans ; Skin ; Vincristine

Child, Preschool ; Histiocytic Sarcoma ; pathology ; therapy ; Humans ; Lymphatic Metastasis ; Male

Histiocytic Sarcoma ; diagnosis ; pathology ; therapy ; Humans ; Infant, Newborn ; Male

Adult ; Hepatitis, Viral, Human ; complications ; Histiocytic Sarcoma ; complications ; Humans ; Male

Head and neck sarcomas account for about 1% of malignant head and neck tumors, and histiocytic sarcomas (HSs) account for less than 1% of all hematolymphoid neoplasms. These rare hematopoietic neoplasms are the result of a malignant proliferation of cells. They have morphological and immunophenotypic features of mature tissue histiocytes, which play a major role in processing and presenting antigens to T or B lymphocytes. The mesenchymal differentiation of HSs has not been reported. We describe a case of HS with rhabdoid differentiation in a 55-year-old man who presented with a 3×2.5×2 cm mass in the left supraclavicular area. To the best of our knowledge, this is the first report worldwide of a primary HS with rhabdoid differentiation.
B-Lymphocytes ; Head* ; Hematologic Neoplasms ; Histiocytes ; Histiocytic Sarcoma* ; Humans ; Middle Aged ; Neck* ; Sarcoma

Anaplastic large cell lymphoma(ALCL) is a recently recognized large cell lymphoma characterized by large pleomorphic cells, with prominent nucleoli, expressing the CD3O(Ki-1) antigen. It is often misdiagnosed as metasfatic carcinoma, malignant histiocytosis or Hodgkin's disease. Primary pulmonary ALCL is extremely rare although it frequently involves extranodal sites, e.g. skin, bone, gastrointestinal tract, soft tissue and lung. We report a case of ALCL suspected as primarily involving lung.
Gastrointestinal Tract ; Histiocytic Sarcoma ; Hodgkin Disease ; Lung ; Lymphoma ; Lymphoma, Large-Cell, Anaplastic* ; Skin ; Tuberculosis, Pulmonary*

True histiocytic sarcoma is an extremely rare tumor. Its clinicopathological features are not clearly understood. Here, we report the first Korean case of primary splenic histiocytic sarcoma. A 64-year-old female having refractory thrombocytopenia, anemia and splenic mass was admitted to the hospital, and received splenectomy. Grossly, spleen was enlarged up to 18 x 13 x 8 cm and occupied with multinodular masses. Microscopically, the masses were composed of atyical large cells with abudant cytoplasm and vesicular nuclei with prominent hemophagocytosis. The tumor cells were CD68 (+), S-100 protein (-), CD21 (-), CD1a (-). After splenectomy, thrombocytopenia and anemia were corrected. However two months later the symptoms recurred, and the patient died 15 months after splenectomy. This case shared the common clinicopathologic features with the several previously reported cases in other countries, represented by splenic mass formation and prominent hemophagocytosis associated with thrombocytopenia and anemia, often leading to poor outcome.
Anemia ; Cytoplasm ; Female ; Histiocytic Sarcoma* ; Humans ; Middle Aged ; S100 Proteins ; Spleen* ; Splenectomy ; Thrombocytopenia