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34 results on '"YAMAMOTO, Yasuhisa"'

2. Significance of Microcalcifications on Mammography in the Surgical Treatment of Breast Cancer Patients with a Preoperative Diagnosis of Ductal Carcinoma in Situ by Core Needle Biopsy

Author

Isozaki, Hiroshi, Yamamoto, Yasuhisa, Murakami, Shigeki, Matsumoto, Sasau, and Takama, Takehiro

Subjects
Adult, Aged, 80 and over, underestimation, Calcinosis, microcalcifications on mammography, Breast Neoplasms, core needle biopsy, Middle Aged, Carcinoma, Intraductal, Noninfiltrating, ductal carcinoma in situ, Humans, Female, Neoplasm Invasiveness, Biopsy, Large-Core Needle, positive margins, Aged, Mammography, Retrospective Studies
Abstract

To clarify the surgical outcomes of breast cancer patients with a preoperative diagnosis of ductal carcinoma in situ (DCIS) by core needle biopsy (CNB) (abbreviated as CNBDCIS), we retrospectively analyzed the cases of 131 patients with CNBDCIS who underwent surgery at Oomoto Hospital (32 total mastectomies, 99 conservative mastectomies). Our analysis of underestimation and predictors of invasive breast cancer of CNBDCIS revealed that the underestimation rate of CNBDCIS was 40.5% (53/131). A logistic regression analysis revealed that palpable tumors (yes to no, odds ratio [OR] 3.25), mammography (MMG) category group (category 4 or 5 to categories 1 , 2, or 3, OR 4.69) and MMG microcalcifications (no to yes, OR 0.24) were significant predictive factors for CNBDCIS invasion. In our analysis of the predictors of positive margins during CNBDCIS surgery, 36 (27.5%) of the 131 patients had positive margins after postoperative pathological examination. A logistic regression analysis revealed that the operative procedure (conservative surgery to total mastectomy, OR 21.4) and MMG microcalcifications (yes to no, OR 3.35) were significant factors related to positive margins during CNBDCIS surgery. Thus, MMG microcalcifications are a negative predictor of upgrading of CNBDCIS and a positive predictor of positive surgical margins for CNBDCIS.

Published
2019

3. A Case of Giant Epiphrenic Esophageal Diverticulum

Author

Majima, Toshimitsu, Yamamoto, Yasuhisa, Yamamoto, Yutaka, Oka, Yasuo, Hayashi, Jiro, Urakami, Atsushi, Yamashita, Kazuki, Iwamoto, Sueharu, Kimoto, Masatoshi, and Tsunoda, Tsukasa

Published
2000

17. A Cystic Lymphangioma of the Colon Seen in a Patient with Early Gastric Cancer

Author

KIMOTO, Masatoshi, KASAI, Yutaka, SHIMIZU, Hirohide, MURE, Tsutomu, IWAMOTO, Sueharu, HAYASHI, Hidenobu, YAMAMOTO, Yasuhisa, SANO, Kaiso, HOSHIKA, Kazunori, UCHIDA, Junichi, KIHARA, Tsuyoshi, MORIYA, Takuya, and NAKAGAWA, Sadaaki

Subjects
body regions, Cystic, Lymphangioma, Colon, digestive system diseases
Published
1985

18. A Case of Renal Angiomyolipoma

Author

Hoshika, Kazunori, Kayashima, Eizo, Kozuka, Kazushi, Nagasaki, Sadaomi, Fujimura, Yoshinori, Miyashima, Norio, Shimazui, Tadayoshi, Uchica, Junichi, Kihara, Tsuyoshi, Hara, Takumo, Kimoto, Masatoshi, Yamamoto, Yasuhisa, and Sano, Kaiso

Published
1986

24. A Case of Congenital Choledochal Cyst in Adult

Author

Kimoto, Masatoshi, Sai, Tetsujun, Hirano, Kazuhiro, Imai, Hiroyuki, Nagano, Hideki, Shimizu, Hirohide, Seo, Yasuo, Iwamoto, Sueharu, Sasaki, Yoshihito, Yamamoto, Yasuhisa, Sano, Kaiso, Hino, Kazunari, Fukushima, Keisuke, and Yamamoto, Shinichiro

Published
1983

26. Incisional Hernia : A Retrospective Study of 29 Cases

Author

Imai, Hiroyuki, Kimoto, Masatoshi, Nagano, Hideki, Sasaki, Yoshihito, Shimizu, Hirohide, Seo, Yasuo, Iwamoto, Sueharu, Hayashi, Hidenobu, Mure, Tsutomu, Yamamoto, Takashi, Yamamoto, Yasuhisa, and Sano, Kaiso

Published
1984

28. Lymphangioma of the Small Intestine : A Case Report

Author

KIMOTO, Masatoshi, NAGANO, Hideki, IWAMOTO, Sueharu, MURE, Tsutomu, SHIMIZU, Hirohide, SEO, Yasuo, YAMAMOTO, Yasuhisa, NOBUTO, Hiroshi, SANO, Kaiso, HOSHIKA, Kazunori, KIHARA, Tsuyoshi, MORIYA, Takuya, HIROKAWA, Mitsuyoshi, and NAKAGAWA, Sadaaki

Subjects
body regions, digestive, oral, and skin physiology, jejunum, digestive system, lymphangioma
Published
1987

30. Peritoneal Exploration on Laparotomy : Findings and Analysis

Author

Kimoto, Masatoshi, Nagano, Hideki, Iwamoto, Sueharu, Mure, Tsutomu, Kasai, Yutaka, Hayashi, Hidenobu, Imai, Hiroyuki, Shimizu, Hirohide, Nobuto, Hiroshi, Seo, Yasuo, Yamamoto, Yasuhisa, and Sano, Kaiso

Subjects
Laparotomy, Peritoneal exploration
Published
1988

32. Antibody formation for malignant tumor. Ⅲ. Antigenicity of peptide of ribosomal digest in Ehrlich ascites tumor

Author

Yamamoto, Yasuhisa, Jituiki, Dairoku, and Yabuki, Yasuo

Abstract

Antigenicity of the peptide of ribosomal digest in Ehrlich ascites tumor was studied. The peptide was purified by DEAE Sephadex A-50 column chromatography. The peptide was electrophoretically basic, single, and 1.32 S20w sedimentation coefficient with poor content of tyrosine and phenylalanine. The maximum absorbancy was at 267 mμ. Mice and rabbits were immunized with the mixture of the purified peptide with Freund's complete adjuvant. The inhibitory effect of immune γ-globulin on the tumor growth was demonstrated in vitro cultured JTC-11 cells. A single precipitin line was observed between rabbit antiserum and tumor cell extract of Ehrlich ascites cells in ouchterlony double diffusion chamber and immunoelectrophoresis. The sedimentation coefficient of the effective fraction in immune-serum was 17 S20w. The precipitin line was observed at β2-γ region in immunoelectrophoresis.

Published
1970

33. Chemical analysis of soluble fractions from normal and autolysed rabbit liver by column chromatography

Author

Yamamoto, Saburo, Aizawa, Tadashi, Yoshikawa, Satoshi, Matsuura, Yasushi, and Yamamoto, Yasuhisa

Subjects
Electrophoresis, Chromatography, Liver, Animals, Phosphorus Isotopes, Proteins, Blood Proteins, Rabbits
Abstract

Chromatography on Sephadex G-200 was performed with the soluble fraction of homogenated rabbit liver, which was extracted with 0.1 M phosphate buffer containing 0.1 M NaCl. and the influences of autolysis on the soluble fraction of liver were also examined. The soluble fraction of liver was different from serum in molecular weight, in electrophoretic character and in components with sedimentation coefficients. The soluble fraction of liver was stable under the influence of Mg and K ions, and rather unstable in the presence of Na ions. Serum was fractionated in three main peaks. The soluble fraction of liver was fractionated in a similar pattern as of serum, but the first peak contained nucleic acid and lipoprotein. The second contained albumin. 32p radioactivity peaks of the stored sample appeared with change in patterns by autolysis from the original, and were observed wide based and continuous figures in retarded peaks. The correlations with the first peak and retarded peaks were represented by the analysis of phosphorus compounds and electrophoresis. In lipid analysis, both diglyceride and monoglyceride gradually decreased, and phospholipid pattern was observed to increase in retarded peaks by autolysis. Lipoprotein or lipid-albumin complex was gradually converted to smaller molecular weight compounds, and appeared in retarded peaks.

Published
1966

34. Antibody formation for malignant tumor. II. Antigenicity of Ehrlich ascites tumor lipoprotein

Author

Yamamoto, Yasuhisa, Tadatomo, Yasuo, and Okamura, Shinsuke

Subjects
Immune Sera, Lipoproteins, Immunoglobulins, Electrophoresis, Disc, Lipids, Cell Line, Mice, Cholesterol, Antigens, Neoplasm, Antibody Formation, Animals, lipids (amino acids, peptides, and proteins), Antigens, Carcinoma, Ehrlich Tumor, Ultracentrifugation, Neoplasm Transplantation, Phospholipids
Abstract

A unique low density lipoprotein was obtained from the tumor transplanted with a cultured cell line of Ehrlich ascites tumor, JTC-ll cell. The tumor low density lipoprotein electrophoretically migrated as a single band, and the mobility was different from that of other organs. The chemical composition of lipid, cholesterol and phospholipids in tumor low density lipoprotein were characteristic. The flotation rate was Sf 5.9, and thus the molecular weight was estimated to be about 130 x 104. The inhibitory effect on tumor growth of the immune serum was most elevated at 25th day after the intraperitoneal administration of tumor low density lipoprotein. The main fraction effective for inhibition of tumor growth existed in γ-globulin.

Published
1970

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