Mantle cell lymphoma lacking the t(11;14) translocation: a case report and brief review of the literature

Mantle cell lymphoma negative for t(11,14) involving the kidneys: a case report

Background

Mantle cell lymphoma is the rarest subtype of non-Hodgkin’s lymphoma. It can exhibit diverse extranodal manifestations. However, renal involvement is uncommon, and if it occurs, it usually only gets detected postmortem. There are several mechanisms by which mantle cell lymphoma can damage the kidneys. Renal failure is a potential complication, and prompt evaluation and diagnosis are critical steps to prevent long-term complications.

Case presentation

We present the case of a 75-year-old non-Hispanic White male with past medical history significant for hypertension and dyslipidemia, presenting with fever, weight loss, and night sweats. Work-up showed markedly elevated white blood cells, multiple enlarged lymph nodes, and a kidney mass. The patient was diagnosed with mantle cell lymphoma with kidney involvement confirmed with a kidney biopsy. His disease was positive for cyclin D1 overexpression despite t(11; 14) absence. The patient received six cycles of alternating vincristine, rituximab, cyclophosphamide, doxorubicin, and prednisone then dexamethasone, high-dose cytarabine, and oxaliplatin, after which he was maintained on ibrutinib and rituximab, with resolution of symptoms and disease regression.

Conclusion

We present a case of a rare presentation of Mantle cell lymphoma while describing the clinical presentation and diagnostic and treatment approaches. This case report can assist physicians in the clinical work-up and treatment of patients with similar diagnosis or presentation.

Puerarin induced in mantle cell lymphoma apoptosis and its possible mechanisms involving multi-signaling pathway

This research designed to explore the antitumor activity of puerarin against human mantle cell lymphoma (MCL). Cell proliferation and apoptosis were assessed by MTS and flow cytometry. Caspase-3, -8, and -9 activities were assessed with the colorimetric caspase protease assay. Apoptotic proteins like PARP, cyclin D1, Bcl-2 family, XIAP, and cIAP I were researched by western blot. The PI3K inhibitor LY294002 was used to investigate the possible mechanism relating the PI3K/Akt signaling pathway. Puerarin in vitro inhibited proliferation and induced apoptosis of Z138 cells. Expressions of PI3K and p-Akt were downregulated by puerarin. Puerarin negatively regulated NF-κB activity by inhibiting NF-κB phosphorylation with nuclear translocation inhibition. This kind of effects was correlated with the suppression of expression of cyclin D1, BAX, Bcl-2, XIAP etc. This function was modulated by the PI3K inhibitor. Our results demonstrated that puerarin can induce growth arrest and apoptosis in MCL cells and that the mechanism may involve the NF-κB signaling pathway. Puerarin may have therapeutic applications in the treatment of MCL.

Nodal and leukemic small B-cell neoplasms

The small B-cell neoplasms represent some of the most frequently encountered lymphoproliferative disorders in routine surgical pathology practice. This report reviews the current diagnostic criteria for classifying small B-cell neoplasms and distinguishing them from newly recognized precursor conditions that do not appear to represent overt lymphomas. Newly available immunohistochemical stains and molecular studies that may assist in the diagnosis and classification of these neoplasms are also discussed.

Solitary primary gastric mantle cell lymphoma

Mantle cell lymphoma (MCL) is a relatively rare subgroup of non-Hodgkin's lymphoma that is characterized by an aggressive and severe disease course with frequent involvement of regional lymph nodes and/or early metastasis. Because most cases of MCL are diagnosed in the advanced stages, clinical data on extranodal or early stage MCL is lacking, and MCL that is both extranodal and diagnosed during the early stages is even more rare. There have been several case reports on primary gastric MCL, which comprise a type of extranodal MCLs. However, to our knowledge, there have been no reports on solitary primary gastric MCL without regional lymph node involvement or distant metastasis. Recently, the authors experienced an uncommon case of MCL with the aforementioned characteristics that was managed with chemotherapy followed by allogenic stem cell transplantation.