Inflammatory pseudotumor-like extranodal classic Hodgkin lymphoma manifesting as bowel perforation in acquired immunodeficiency syndrome patient with disseminated leishmaniasis: a case report and approach to differential diagnosis.

Background: Classic Hodgkin lymphoma (CHL) is an extremely common non-acquired immunodeficiency syndrome (AIDS) defining malignancy and its incidence is rising. CHL is usually present in the lymph node and extranodal involvement is rare. Primary CHL of the gastrointestinal (GI) tract is exceedingly rare.

Genomic and Clinicopathological Characterization of CRLF2-Rearranged Mixed Phenotype Acute Leukemia.

Rearrangements of cytokine receptor-like factor 2 gene (CRLF2) are present in ∼50% of B-lymphoblastic leukemia/lymphoma (B-ALL) with BCR::ABL1-like features. Herein, we report three patients with CRLF2-rearranged mixed phenotype acute leukemia (MPAL). All three cases were B/myeloid MPAL in young patients harboring P2RY8::CRLF2 or IGH::CRLF2 with additional genomic alterations in signaling (JAK and RAS) and cell cycle (CDKN2A/B) pathways, a genomic profile similar to that in BCR::ABL1-like B-ALL.

The Role of Breast Cancer Stem Cells in Chemoresistance and Metastasis in Triple-Negative Breast Cancer.

Triple negative breast cancer (TNBC) remains an aggressive disease due to the lack of targeted therapies and low rate of response to chemotherapy that is currently the main treatment modality for TNBC. Breast cancer stem cells (BCSCs) are a small subpopulation of breast tumors and recognized as drivers of tumorigenesis. TNBC tumors are characterized as being enriched for BCSCs.

Lenalidomide-Associated Secondary B-Lymphoblastic Leukemia/Lymphoma-A Unique Entity.

Objectives: Autologous stem cell transplant with lenalidomide maintenance therapy has greatly improved the relapse-free and overall survival rates of patients with multiple myeloma but also has been associated with an increased risk of secondary B-lymphoblastic leukemia/lymphoma (B-ALL).

Methods: We report a comprehensive review of the clinicopathologic features of 2 patients with multiple myeloma who developed secondary B-ALL during lenalidomide maintenance.

Results: Our observations showed that the disease may initially present with subtle clinical, morphologic, and flow-cytometric findings.

Smart Glasses as a Surgical Pathology Grossing Tool.

Context.—: Smart glasses are a wearable technology that enable hands-free data acquisition and entry.

Objective.