[Myeloid sarcoma of the small bowel with inversion of chromosome 16: a description of 3 clinical cases].

Myeloid sarcoma (MS) is a rare malignant solid tumor presented with myeloid blast cells showing varying degrees of maturation. MS may have an extramedullary site, precede, or develop simultaneously with the clinical manifestations of acute myeloid leukemia (AML); it may also occur as an AML relapse. Besides AML, MS may be a manifestation of chronic myeloid leukemia or other chronic myeloproliferative diseases.

[Successful treatment of a patient with two hematologic tumors: double-hit lymphoma and acute myelomonoblastic leukemia].

Double-hit (DH) lymphoma, an extremely aggressive variant of B-cell lymphoma, is accompanied by chromosomal abnormalities leading to the activation of a few oncogenes, one of which is the c-MYC gene in conjunction with BCL2 or BCL6 gene rearrangements. There are most common cases of MYC/8q24 and BCL2/18q21 gene rearrangements (MYC/BCL-2 DH lymphoma). The tumor is characterized by an aggressive clinical course and a poor response to chemotherapy (CT).

[Experience with high-dose chemotherapy in patients with testicular diffuse large B-cell lymphoma].

Aim: To evaluate the efficiency of high-dose therapy according to the DLBL-CNS-2007 protocol in patients with testicular diffuse large B-cell lymphoma (DLBL).

Subjects And Methods: Out of 408 male patients with non-Hodgkin lymphoma, 8 patients aged 50 to 69 years (median age 55.5 years) with primary testicular (n=3) or with generalized-stage testicular DLBL (n=5) were included in the study.

[Primary mediastinal large B-cell lymphoma in pregnant women].

Aim: To elaborate a management tactic for pregnant women with primary mediastinal large B-cell lymphoma (PMLBL) and to assess the toxicity of its treatment to the mother and fetus.

Subjects And Methods: In 2004 to 2014, the Hematology Research Center, Ministry of Health of Russia, treated 94 patients with mediastinal large B-cell lymphoma, 7 (7.4%) of them developed the disease during pregnancy.

[Eight-year experience in treating aggressive mediastinal large B-cell lymphomas].

Aim: To make a differential diagnosis of diffuse large B-cell lymphoma (DLBCL) with primary involvement of the mediastinal lymph nodes (LN) and primary mediastinal large B-cell lymphoma (PMLBCL); to evaluate the efficiency of a modified NHL-BFM-90 (M-NHL-BFM-90) program in the treatment of the above nosological entities.

Subjects And Methods: The investigation enrolled 60 patients with large B-cell lymphoma (LBCL) with primary involvement of mediastinal LN who had been treated at the Hematology Research Center, Ministry of Health of Russia, in 2004 to 2012. The diagnosis of PMLBCL and DLBCL with primary involvement of mediastinal LN was based on histological findings, the phenotype of tumor cells, and molecular evidence.