24 research outputs found
The Prognostic Significance of Subserosal and Serosal Extent of Cancer Invasion in Gastric Cancer
In order to determine the prognostic significance of subserosal and serosal extent of cancer invasion in gastric cancer, 78 patients were reexamined histologically. In these patients curative resection was performed and cancer invaded the subserosal layer with growth pattern of infiltrating type i.e."*"(30 patients), or exposed outside the serosal surface i.e. "*" (48 patients). The significantly favourable prognosis was seen only in patients with ssr cancer being less than 1 cm in extent with a five-year survival rate of 92.3%, and in patients with small amount of cancer cells in the subserosal layer, having a five-year survival rate of 81.8%. In patients with se cancer the five-year survival rate was less favorable
Application of double stapling technique after anterior resection for rectal cancer
Double stapling technique (DST) were applied in 22 cases who underwent low and high anterior resection of the rectum. Postoperative complications were encounted in six, three were mild strictures and the other three were minor leakages. All were not severe, demonstrating no correlation to the conditions of the anastomosis and subsided by conservative therapy in a short period. Anastomotic leakage occurred in three but these were based on technical problems and it is possible to avoid with careful surgical management. In conclusion, DST is of great benefit for the treatment of carcinoma of the rectum to reduce the consuming operation time and to lessen the risk of bacteriological and oncological contaminations
Surgery for postoperative recurrence of gastric cancer
The six patients who underwent reoperation for recurrence of gastric cancer following surgery were clinically analysed, of whom one had lung metastasis and the other five local recurrences. The conditions of resectability are that carcinoma infiltration should be limited, the disease-free interval-after the first operation should be long and there are no blood-borne metastases into the lung and the liver. The surgical outcome for lung metastasis was pessimistic. It is emphasized that multidisciplinary therapy and early detection are indispensable for improving the surgical outcome in the treatment of recurrence of gastric cancer
Early Gastric Cancer Presenting Pyloric or Prepyloric Stenosis
Out of 390 patients with early gastric cancer (EGC) who underwent gastric resection between Jan. 1968 and Jul. 1987, four patients developed pyloric stenosis and one patient developed prepyloric stenosis. Macroscopic types of EGC were II c in three cases and II c + III in two cases. Histologic types were tubular adenocarcinoma in four patients, and poorly differentiated adenocarcinoma in one patient. Cancer existed just right on or immediately adjacent to the pyloric ring in all patients; and extended transversely to the gastric axis in four patients, and longitudinally in one patient. An associated open ulcer and/or ulcer scar in the cancer lesion was seen in four patients, and submucosal fibrosis in three patients to a variety of degree, both of which were thought to be greatly attributed to pyloric or prepyloric stenosis. A duodenal ulcer was not present in any patients
Wide-range thermal conductivity modulation based on protonated nickelate perovskite oxides
Li H.B., Bian Z., Yoshimura M., et al. Applied Physics Letters. 124, 191901 (2024) https://doi.org/10.1063/5.0201268.The perovskite oxides ReNiO₃ (Re = rare-earth elements) are promising functional materials due to their strongly correlated electrons. Except for the well-known intrinsic metal-insulating transition in these materials, recent progresses have proved that protonation of ReNiO₃ can bring about interesting Mott transition in this series. To date, in these protonated species (H-ReNiO₃), huge resistance switching, fast ionic diffusion, and their applications as an iontronic transistor, memristor, and fuel cell are reported. In this work, the thermal conductivities of H-ReNiO₃ (Re = La, Nd, Sm, and Eu) epitaxial thin films are investigated. The protonation-induced Mott transition can effectively modulate the electronic thermal conductivity while the lattice thermal conductance is less affected. Hence, at room temperature, the metallic LaNiO₃ and NdNiO₃ exhibit reversible wide thermal conductivity modulation, in ranges of 2.6–12.0 and 1.6–8.0 W m−1 K−1, respectively. These values are much larger than other thermal regulation materials based on transition metal oxides. Thus, our work reveals the great potential of ReNiO₃ being applied as a thermal-regulating material. The fast ionic diffusion in H-ReNiO₃ also guarantees that a fast response and wide-range thermal transistor can be realized by H-LaNiO₃ and H-NdNiO₃ in the future