Prostate tuberculosis mimicking malignancy on 18F-FDG PET/CT in a patient with diffuse large B-cell lymphoma: A case report.

BACKGROUND: Prostate tuberculosis (TB) is a rare and often underdiagnosed condition due to its nonspecific symptoms and imaging features, which can mimic malignancies on 18F-fluorodeoxyglucose positron emission tomography (PET) scans. This resemblance poses a challenge in differentiating TB from prostate cancer, especially in patients with preexisting tumors such as diffuse large B-cell lymphoma. The purpose of this study is to highlight the importance of considering TB in the differential diagnosis of patients with atypical imaging findings, even in the presence of known malignancies. CASE: We present a case of a 60-year-old man with diffuse large B-cell lymphoma who was initially misdiagnosed with a prostate tumor based on 18F-fluorodeoxyglucose PET/computed tomography scans. The subsequent ultrasound-guided prostate biopsy confirmed the presence of prostate TB, not malignancy. CONCLUSIONS: This case report underscores the critical role of considering TB as a potential diagnosis in patients with hematological tumors and atypical imaging results. It serves as a reminder for clinicians to exercise caution when interpreting PET/computed tomography scans and to incorporate TB into their differential diagnoses, thereby avoiding misdiagnosis and inappropriate treatment.

Meta-analysis on the efficacy of allogeneic hematopoietic stem cell transplantation to treat malignant lymphoma.

The goal of the study involved the comparison of clinical efficacy of allogeneic hematopoietic stem cell transplantation (allo-HSCT) and autologous hematopoietic stem cell transplantation (auto-HSCT) in the treatment of malignant lymphoma (ML). The effectiveness of allo-HSCT versus auto-HSCT in the treatment of ML was compared by searching EMBASE, PubMed, Web of Science, and the Cochrane Library for relevant studies. The confidence intervals (CI) and odds ratio (OR) of the article's outcomes were described by a forest plot. Finally, 972 patients in seven articles were included. Overall survival (OS) did not differ significantly between allo-HSCT and auto-HSCT groups (OR = 0.87, 95% CI: 0.66-1.14, P = 0.31). Furthermore, there was no significant difference in adverse reactions (AR) between the two groups (OR = 1.35, 95% CI: 0.81-2.24, P = 0.25). We observed a significant difference in progression-free survival (PFS) between the two groups (OR = 4.14, 95% CI: 2.93-5.35, P < 0.01). There was no evidence of publication bias in this meta-analysis. The incidence of OS and AR differ significantly between allo-HSCT and auto-HSCT, but the PFS was longer in ML patients who received allo-HSCT.

From spear to trident: Upgrading arsenal of CAR-T cells in the treatment of multiple myeloma.

Multiple myeloma (MM), marked by abnormal proliferation of plasma cells and production of monoclonal immunoglobulin heavy or light chains in the majority of patients, has traditionally been associated with poor survival, despite improvements achieved in median survival in all age groups since the introduction of novel agents. Survival has significantly improved with the development of new drugs and new treatment options, such as chimeric antigen receptor T-cell therapy (CAR-T), which have shown promise and given new hope in MM therapy. CARs are now classified as first-, second-, and third-generation CARs based on the number of monovalent to trivalent co-stimulatory molecules incorporated into their design. The scope of this review was relatively narrow because it was mainly about a comparison of the literature on the clinical application of CAR-T therapy in MM. Thus, our goal is to provide an overview of the new advances of CAR-T cells in the cure of MM, so in this review we looked at the progress of the clinical use of CAR-T cells in MM to try to provide a reference for their clinical use when managing MM.

Meta-analysis of the results of haploidentical transplantation in the treatment of aplastic anemia.

This meta-analysis was to evaluate the outcome of haploidentical hematopoietic stem cell transplantation (Haplo-HSCT) for aplastic anemia (AA) compared with matched related donor (MRD)-HSCT, matched unrelated donor (MUD)-HSCT, and immunosuppressive therapy (IST). Pubmed, Embase, Cochrane Library, Web of Science, CNKI, WanFang, and VIP databases were searched for relevant studies from inception to 22 June 2022. Relative risk (RR) was used to indicate the effect indicator, with a 95% confidence interval (CI) being applied to express the effect size. A subgroup analysis based on the literature quality (low, fair, and high) was applied. Totally, 25 studies were included in this study, comprising 2252 patients. Our findings demonstrated no difference between Haplo-HSCT and MRD-HSCT in 1-, 2-, and 3-year overall survival (OS), failure-free survival (FFS), and engraftment. However, Haplo-HSCT had higher incidences of II-IV acute graft-versus-host disease (aGVHD), chronic GVHD (cGVHD), and cytomegalovirus infection. There were no differences in 3- and 5-year OS, 3-year FFS, platelet engraftment, graft failure (GF), II-IV grade of aGVHD, and complication between Haplo-HSCT and MUD-HSCT; however, Haplo-HSCT had a lower incidence of cGVHD. Compared with IST, Haplo-HSCT had a higher 3-year FFS and 3- and 6-month response rate. However, there were no differences in 3- and 5-year OS, and 12-month response rate between Haplo-HSCT and IST. This study suggests that Haplo-HSCT may be a realistic therapeutic option for AA, which may provide a reference for decision-making.

PET/CT Evaluation of the Effect of Allogeneic Hematopoietic Stem Cell Transplantation in the Treatment of T-Cell Lymphoblastic Lymphoma.

The aim of this study was to investigate the clinical value of positron emission tomography/computerized tomography scanning (PET/CT) in the evaluation of the effect of allogeneic hematopoietic stem cell transplantation in the treatment of T lymphoblastic lymphoma. 12 relevant research articles were collected through layer-by-layer screening in large databases such as Pubmed, Baidu Scholar, and China How Net, and analyzed and summarized using indicators such as progression-free survival (PFS), overall survival (OS), hazard ratio (HR), maximum standardized uptake value (SUV max), total metabolic tumor volume (TMTV), total lesion glycolysis (TLG), elevated lactate dehydrogenase (LDH), and ß2-microglobulin (ß2-MG). The results showed that before treatment, 18F-FDG PET/CT baseline diagnosis could accurately stage the patients; during treatment, 18F-FDG PET/CT detection could provide effective treatment information; and after treatment, complications were found during 18F-FDG PET/CT detection. In summary, 18F-FDG PET/CT can monitor and evaluate treatment prognosis at baseline, middle, and late stages, and 18F-FDG PET/CT has become an indispensable and important examination technique in clinical work.

Prophylactic administration of mecapegfilgrastim after chemotherapy in patients with lymphoma.

BACKGROUND: Neutropenia is a common and serious complication encountered during chemotherapy treatment of cancer patients. The incidence of neutropenia increases the risk of infection and can influence the chemotherapy treatment in terms of drug dosage and treatment duration. Mecapegfilgrastim is a novel, long-acting pegylated recombinant human granulocyte-colony stimulating factor (PEG-rhG-CSF) designed to prevent the incidence of neutropenia. The study aims to observe the effectiveness and safety of mecapegfilgrastim as prophylaxis for chemotherapy-induced neutropenia in patients with lymphoma. METHODS: Ninety-one patients with lymphoma were enrolled and received mecapegfilgrastim as either primary or secondary prophylaxis. The incidence of grade III/IV neutropenia, the duration of grade III/IV neutropenia in the overall population, and the differences between the primary and secondary prophylaxis groups were investigated. Adverse events were also recorded. RESULTS: During the first chemotherapy cycle, the incidence of grade III and grade IV neutropenia was 5% and 7%, respectively. Of the 71 patients who received mecapegfilgrastim as primary prophylaxis, the incidence of grade III and grade IV neutropenia was 4% and 1%, respectively. Of the 20 patients who received mecapegfilgrastim as secondary prophylaxis, the incidence of grade III and grade IV neutropenia was 10% and 25%, respectively. The mean duration of grade III neutropenia was 0.85 days. The mean duration of grade III neutropenia in patients who received mecapegfilgrastim as primary prophylaxis was one day less than patients who received mecapegfilgrastim as secondary prophylaxis. Fever and bone/muscle pain were the most frequently observed adverse events. CONCLUSIONS: Mecapegfilgrastim is more effective in reducing the incidence of grade III/IV neutropenia and the mean duration of febrile neutropenia (FN) when used as primary prophylaxis rather than secondary prophylaxis in patients with lymphoma. The toxicity of mecapegfilgrastim was tolerable.