CD34 (CD34 molecule)

SCD34FT is a novel entity with consistent CD34 expression and recurrent PRDM10 rearrangements and shows indolent behaviour. A high index of suspicion for SCD34FT should be warranted in a superficially located tumour with striking nuclear pleomorphism but an unexpectedly low mitotic index. Molecular studies demonstrating PRDM10 rearrangement may be helpful in atypical cases.

In this preclinical study, we demonstrate that the MI ziftomenib, in combination with the XPO1 inhibitor selinexor, synergistically inhibited the growth of multiple KMT2A- r and NPM1 -m AML cell lines (CI<1). In vivo , combination therapy improved survival in both MV4;11 and OCI-AML3 cell line and primary patient-derived KMT2A - r and NPM1 -m AML xenograft models in NSG mice, effective even at reduced drug doses. These preclinical findings demonstrate that simultaneous inhibition of the menin-KMT2A interaction and XPO1 can be a more effective translational strategy for treating KMT2A- r and NPM1 -m AML than MI monotherapy to deepen responses and delay/prevent relapses.

These findings support the hypothesis that iron overload, reflected by elevated ferritin as surrogate parameter, may contribute to and/or increase genetic instability in MDS patients with ineffective hematopoiesis. Notably, correlations were observed at ferritin levels below current thresholds for initiating iron chelation therapy, indicating clinical relevance early in the disease course.

Extensive sampling, careful morphological observation, immunohistochemical staining and molecular detection of NAB2::STAT6 fusion are helpful for the diagnosis. It appears to have aggressive biological behaviors.

Early-stage FOP exhibits distinct histological features, with congenital hallux deformity serving as a crucial diagnostic clue. Molecular testing for ACVR1 mutations facilitates early disease diagnosis.

Moreover, we speculate that these lesions are likely underrecognized in busy routine gastrointestinal biopsy service, as most are probably dismissed as benign mesenchymal polyps/submucosal proliferations after exclusion of GIST or are misdiagnosed as inflammatory fibroid polyp in the case of CD34 positivity. However, the case presented demonstrates that, in light of the apparently typical occurrence in mid-aged females with endoscopic impression of benign polyp of the body, general pathologists of routine biopsy services should also have a high degree of suspicion and maybe add a perineural marker to their panel.

The adverse events of CS-101 were generally consistent with those of busulfan myeloablative conditioning and autologous haematopoietic stem and progenitor cell transplantation. No deaths or cancer occurrences were reported. In summary, CS-101 can lead to rapid and sustained increases in both total haemoglobin and HbF levels, which resulted in early and enduring transfusion independence.

A comprehensive immunohistochemical panel is essential for the accurate diagnosis of AFX. The absence of PRAME expression, together with block-type CD10 positivity, supports the distinction of AFX from malignant melanoma and other histological mimics, facilitating appropriate clinical management.

Therapeutically, a DLK1-directed antibody-drug conjugate (DLK1-ADC) induced selective cytotoxicity, abrogated colony formation, and significantly prolonged survival in refractory ML-DS PDX models, achieving durable remissions at higher doses. These findings establish DLK1 as a leukemia-specific vulnerability and provide preclinical proof-of-concept for DLK1-targeted therapies in ML-DS and other leukemias with fetal-like expression programs.

Surgical margins were negative, and one-year follow-up showed that the patient remained disease-free. This case highlights the importance of immunohistochemistry and molecular testing for accurate diagnosis and appropriate management.

Primary leiomyoma of the anterior mediastinum is extremely rare. Because primary mediastinal leiomyomas have nonspecific imaging features, distinguishing them from other anterior mediastinal tumors is challenging; thus, surgical resection is required for both diagnosis and treatment. Compared with the conventional look-up method, the confronting upside-down VATS technique utilizes higher intercostal access to provide a comprehensive thoracic view while minimizing diaphragmatic interference. The 180-degree rotated assistant monitor allows both surgeon and assistant to share a thoracotomy-like visual field, enhancing intraoperative coordination. In this case, it facilitated a stable operative field and phrenic nerve preservation despite the tumor's proximity without diaphragmatic interference. The confronting upside-down VATS technique may be particularly advantageous for anterior mediastinal tumors located along the phrenic nerve and in close proximity to the diaphragm.

Prompt biopsy and radical surgical excision remain essential, although the overall prognosis is poor. Prevention through effective lymphedema management, clinician vigilance, and long-term follow-up is critical to decrease this devastating complication.