Showing papers by "Hidefumi Higashi published in 2012"

An unusual enteropathy-associated T-cell lymphoma with MYC translocation arising in a Japanese patient: a case report.

Abstract: Enteropathy-associated T-cell lymphoma (EATL) is a rare peripheral T-cell lymphoma classified into 2 types, with or without celiac disease, based on histology. Type 2 EATL is less commonly associated with celiac disease, in which cells are characterized by being monomorphic and small- to medium-sized. Cells are characterized by CD8 and CD56 expression and c-MYC oncogene locus gain. We present an atypical case of type 2 EATL in the jejunum, with human T-lymphotropic virus-1 that was CD4- CD8+ CD56- CD30- CD25- TIA-1+ and granzyme B+ on immunohistological staining. It also displayed translocation of chromosome 8p24 (c-MYC), as determined by fluorescent in situ hybridization. Mucosal spreading and intraepithelial invasion by lymphoma with villous atrophy were detected adjacent to the mucosal layer. The lymphoma may be derived from intraepithelial CD8+ T cells, similar to celiac disease.

Assessment of delayed gastric emptying after major hepatectomy using a 13C-acetic acid breath test

Abstract: Delayed gastric emptying (DGE) after hepatectomy affects the quality of life of patients, although the causes and related conditions have not been investigated. This study evaluated the relationship between hepatectomy and DGE by the objective assessment of gastric emptying (GE). Nineteen patients who underwent major hepatectomy were prospectively enrolled in the study. Their GE was studied using the 13C-acetic acid breath test before and after hepatectomy. The results of the GE analysis were correlated with the postoperative course after hepatectomy. Clinically evident DGE, which was defined as the inability to take in an appropriate amount of solid food orally by postoperative day 14, was not found in these patients, but the gastric half-emptying times before and after hepatectomy were 20.2 ± 9.7 and 28.6 ± 12.2 min, respectively (P = 0.01). The GE time was significantly delayed in patients aged ≥41 years, or who underwent right hemihepatectomy. Gastric emptying was significantly inhibited in patients who underwent major hepatectomy, and aging and a right-sided hemihepatectomy may be related to the development of DGE.