Publications by authors named "C Takagi"
Spontaneous pneumomediastinum is conventionally defined as a disease that does not result from trauma or underlying disease. In recent years, many patients have had some kind of triggering factor, such as sports or a strong cough. Herein, we report a case of mediastinal emphysema with a parapharyngeal tumor at the time of initial examination.
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- Parasitic leiomyoma (PL) are uterine fibroids that grow outside the uterus in areas like the peritoneum, often complicating diagnosis due to varied imaging results, especially after procedures like laparoscopic myomectomies.
- A 29-year-old woman, who previously underwent laparoscopic myomectomy, was diagnosed with a mesenteric tumor through imaging that initially suggested it could be schwannoma, highlighting the ambiguity of PL identification in such cases.
- The case concludes that PL should be considered in mesenteric tumor diagnoses following laparoscopic myomectomy, regardless of whether typical imaging features of uterine fibroids are present, due to its potential to mimic other tumors like schwannomas.
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- Well-differentiated neuroendocrine tumors (NETs) and poorly differentiated neuroendocrine carcinomas (NECs) are biologically distinct, but cases with mixed features can complicate diagnosis.
- A 70-year-old man with chronic hepatitis B had surgery for liver masses, which were found to contain both neuroendocrine neoplasm and hepatocellular carcinoma.
- The mixed characteristics of the tumor raise questions about its aggressiveness, suggesting that even with NEC features, it may not behave as aggressively as typical NECs.
The creation of polymer composite materials by compositing fillers into polymer materials is an effective method of improving the properties of polymer materials, and the development of new fillers and their novel composite methods is expected to lead to the creation of new polymer composite materials. In this study, we develop a new filler material made of low-molecular-weight gelators by applying a gelation process that simultaneously performs the swelling (gelation) of crosslinked polymer materials and the self-assembly of low-molecular-weight gelators into low-dimensional crystals in organic solvents within polymer materials. The gelation process of crosslinking rubber-based polymers using alkylhydrazides/toluene as the low-molecular-weight gelator allowed us to composite self-assembled sheet-like crystals of alkylhydrazides as fillers in polymeric materials, as suggested by various microscopic observations, including infrared absorption measurements, small-angle X-ray diffraction measurements and thermal analysis, microscopy, and infrared absorption measurements.
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- - This study examined how oral ferric citrate hydrate (FCH) affects iron absorption in hemodialysis patients and looked at the role of hepcidin-25, a hormone that regulates iron metabolism, in this process.
- - Over six months, 268 participants were treated with FCH, and researchers tracked changes in serum iron levels to assess absorption, finding that lower hepcidin-25 levels correlated with better iron absorption.
- - Results indicated that as erythropoiesis (red blood cell production) was limited, patients experienced higher hepcidin-25 levels, leading to lower iron absorption from the intestine despite ongoing treatment with FCH.