Publications by authors named "H Sasanuma"

Introduction: Hepatic resection (HR) and radiofrequency ablation (RFA) are curative treatments for three or fewer hepatocellular carcinomas in Japan. The laparoscopic approach in both has been used in recent years; however, its treatment outcome in combination with HR with RFA is unclear. We aimed to gain insights into this combined treatment.

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Purpose: Acoustic radiation force impulse (ARFI) elastography and contrast-enhanced ultrasonography (CEUS) are emerging techniques that are becoming common in ultrasound examinations. We previously reported that ARFI (push pulse) induced lung hemorrhage in rabbits, indicating that greater risks are associated with ARFI than with conventional ultrasound. In this study, we assessed the risk of lung hemorrhage under a combination of ARFI elastography and CEUS, considering potential exacerbation of ARFI-induced lung hemorrhage as a result of the ultrasound contrast agent (UCA) used in CEUS.

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Background: Globally, prevalence of metabolic dysfunction-associated steatotic liver disease (MASLD) is increasing, and there is an urgent need to develop innovative therapies that promote liver regeneration following hepatectomy for this disease. Surgical excision is a key therapeutic approach with curative potential for liver tumors. However, hepatic steatosis can lead to delayed liver regeneration and higher post-operative complication risk.

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A 50-year-old man was diagnosed with type 1 autoimmune pancreatitis (AIP) following endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) and a histopathological examination. After six months of untreated follow-up, the serum IgG4 level decreased, and the diffuse pancreatic enlargement improved; however, a pancreatic head mass became apparent. EUS-FNA of this mass revealed pancreatic ductal adenocarcinoma (PDAC) with IgG4-positive plasma cells.

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RNA-DNA hybrid is a part of the R-loop which is an important non-standard nucleic acid structure. RNA-DNA hybrid/R-loop causes genomic instability by inducing DNA damages or inhibiting DNA replication. It also plays biologically important roles in regulation of transcription, replication, recombination and repair.

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