Medicine
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Case Reports
Rare dual MYH9-ROS1 fusion variants in a patient with lung adenocarcinoma: A case report.
ROS proto-oncogene 1 (ROS1) fusion is a rare but important driver mutation in non-small cell lung cancer, which usually shows significant sensitivity to small molecule tyrosine kinase inhibitors. With the widespread application of next-generation sequencing (NGS), more fusions and co-mutations of ROS1 have been discovered. Non-muscle myosin heavy chain 9 (MYH9) is a rare fusion partner of ROS1 gene as reported. Here, we report an even rare case with coexistence of short and long variants MYH9-ROS1 fusions at the RNA level accompanied by TP53 mutation, insensitively to antitumor therapy. ⋯ We must pay attention to rare dual short and long variants of the MYH9-ROS1 fusions, it may affect the efficacy of ROS1-tyrosine kinase inhibitors targeted therapy.
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Ovarian tumor torsion is a critical gynecological emergency, predominantly affecting women of reproductive age, with benign teratomas being the most common culprits. In contrast, malignant ovarian tumors, such as mucinous cystadenocarcinoma, infrequently present with torsion due to their invasive and angiogenic characteristics. The occurrence of torsion in malignant tumors complicates diagnosis and management, particularly when associated with complications like congestion, infarction, and internal bleeding. This report details a rare case of primary ovarian mucinous cystadenocarcinoma presenting with acute torsion and significant internal bleeding. Our study highlights the diagnostic challenges and the urgent need for clear treatment guidelines, addressing an important gap in the existing literature regarding the management of torsion malignant ovarian tumors. By documenting this case, we aim to contribute to the understanding of this rare condition and provide insights that may help clinicians in similar scenarios. ⋯ Currently, there are no effective preoperative diagnostic and treatment guidelines for ruptured malignant ovarian tumors with torsion. The possibility of malignancy should be considered, and frozen section biopsy should be considered during surgery. Full detorsion before tumor resection to avoid incomplete pedicle coagulation and bleeding. Specimen removal by in-bag morcellation in minimally invasive surgery to prevent complications related to residual fragments of the specimen or dissemination of an occult malignancy.
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T-helper 17 (Th17) cells significantly influence the onset and advancement of malignancies. This study endeavor focused on delineating molecular classifications and developing a prognostic signature grounded in Th17 cell differentiation-related genes (TCDRGs) using machine learning algorithms in head and neck squamous cell carcinoma (HNSCC). A consensus clustering approach was applied to The Cancer Genome Atlas-HNSCC cohort based on TCDRGs, followed by an examination of differential gene expression using the limma package. ⋯ A nomogram combining age, radiotherapy, and the T17I signature accurately predicted the prognosis of patients with HNSCC. Finally, in vitro experiments confirmed that knockdown of LAT gene expression promotes proliferation, metastasis, and invasion of HNSCC cells. In conclusion, this study successfully identified molecular subtypes and constructed a prognostic signature and nomogram based on TCDRGs in HNSCC, which may aid in personalized treatment strategies.
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Thrombus is the most common occupying lesion in the cardiac chambers, it is often distinguished from cardiac neoplastic occupations. Among them, the most common is cardiac myxoma, whose imaging manifestations are often confused with thrombus. However, the 2 types of lesions have different therapeutic strategies and are both potentially high-risk sources of embolism, so early differentiation between intracardiac thrombus and cardiac tumor is essential. In this study, we intend to investigate the value of dual-energy computed tomography (CT) in the differential diagnosis of cardiac thrombus and myxoma by retrospectively analyzing the dual-energy CT-related parameters of 2 cases of intracardiac thrombus and 1 case of cardiac myxoma. ⋯ Drawing upon existing literature, we propose combining different quantitative analysis methodologies to create a more objective foundation for distinguishing between cardiac thrombosis and myxoma.
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Case Reports
Right coronary sinus of Valsalva pseudoaneurysm after a motorcycle accident: A case report.
Traumatic pseudoaneurysm of the sinus of Valsalva (PSV) is a rare but life-threatening condition, often resulting from blunt chest trauma. Rapid progress and a high risk of rupture highlight the importance of prompt diagnosis and intervention. We present a case of a rare pseudoaneurysm linked to the right coronary sinus after blunt chest trauma. ⋯ Traumatic PSV, though rare, demands heightened clinical awareness in cases of blunt chest trauma. Noninvasive computed tomography angiography serves as a rapid and reliable diagnostic tool. Early surgical intervention remains the definitive treatment to prevent catastrophic outcomes.