Only a few cases of gastric adenocarcinoma of fundic gland type have been reported. Gastric
adenocarcinoma with chief cell differentiation (GA-CCD) has been recently reported as a …

BACKGROUND: A prospective, randomized trial proved that Helicobacter pylori eradication
significantly reduces the incidence of metachronous gastric cancer during a 3-year follow-up…

Sessile serrated adenoma (SSA), also referred to as sessile serrated polyp, has been proposed
as a precursor lesion to microsatellite unstable carcinoma. However, the mechanism of …

To further clarify the molecular features of colorectal neuroendocrine carcinomas (NECs),
we immunohistochemically examined tumor samples from 25 NECs, including 9 small cell …

Hepatoid adenocarcinoma is an extrahepatic tumor characterized by morphological similarities
to hepatocellular carcinoma. The lesions contain a tubular adenocarcinoma that seems …

BACKGROUND: Extranodal tumor deposits are involved in TNM classification. However, it
is uncertain whether a tumor deposit is a regular lymph node metastasis, and its prognostic …

CASE 1 A 56-year-old woman was referred to our institution for further investigation of her
multiple gastric polyps. On admission, serology and 13C urea breath test yielded negative …

Sessile serrated adenoma (SSA) has been proposed as a precursor to microsatellite-unstable
colorectal carcinoma. However, histological criteria dictating how to differentiate serrated …

Hepatoid or α-fetoprotein (AFP)–producing adenocarcinomas of stomach growing in a solid
pattern are highly aggressive tumors. It is difficult to detect hepatoid differentiation solely …

Objectives Early gastric cancer with ulceration (EGC-U) mimics advanced gastric cancer (AGC),
as EGC-Us and ACGs often have similar endoscopic appearance to ulceration. The …