Successful Left Trisectionectomy for Intrahepatic Cholangiocarcinoma in a Patient with a Right-Sided Round Ligament: A Case Report.

Introduction: A right-sided round ligament (RSRL) is a rare congenital anomaly characterized by the umbilical vein being connected to the right paramedian trunk. As it is associated with intrahepatic vascular anomalies, it poses special difficulties in hepatic resection, and an accurate understanding of those anomalies is indispensable.

Case Presentation: An 80-year-old man visited a health clinic with the chief complaint of jaundice.

A Rare Case of Pleural Epithelioid Mesothelioma With a Prominent Myxoid Stroma Reported With Morphology, Fluorescent In Situ Hybridization, and Ultrastructural Findings.

Herein, we report a rare case of pleural epithelioid malignant mesothelioma with a prominent myxoid stroma. To date, detailed morphological or molecular pathological findings have not been reported for this type of tumor. Hence, we aimed to describe the cytological, histological, immuno-cytohistological, electron-microscopic, and molecular pathological findings using fluorescence in situ hybridization (FISH) in such a case.

A case of dumbbell-shaped accessory scrotum with concomitant lipoma.

Background: Accessory scrotum is a congenital scrotal anomaly that is usually located anterior to the anus and frequently presents with a lipoma in a bead-like shape. Herein, we present an unusual case of an accessory scrotum with a lipoma connected by a narrow stalk and located posterior to the anus.

Case Presentation: A 1-month-old boy was referred to our hospital for a perineal mass present at birth.

Synchronous Double Primary Combined Hepatocellular-cholangiocarcinoma and Cholangiolocarcinoma in a Cirrhotic Liver.

Both combined hepatocellular-cholangiocarcinoma (cHCC-CCA) and cholangiolocarcinoma are rare primary liver cancers. cHCC-CCA is believed to originate from transformed hepatocellular carcinoma or liver stem/progenitor cells. Cholangiolocarcinoma is characterized by ductular reaction-like anastomosing cords and glands resembling cholangioles or canals containing hepatocellular carcinoma components and adenocarcinoma cells.

Diffuse large B-cell lymphoma in the course of systemic sarcoidosis: A case report and review of 30 Japanese patients with sarcoidosis-lymphoma syndrome.

We report a patient with sarcoidosis who developed diffuse large B-cell lymphoma. A 71-year-old woman with persistent cough was diagnosed pathologically with sarcoidosis by resection of the right upper lung lobe with a nodule after an unsuccessful attempt of transbronchial needle aspiration for mediastinal lymphadenopathy. She was referred for an eye examination and found to have spotty retinal degeneration on the lower fundi of both eyes, together with residual macular edema and vitreous opacity in the left eye.

Clinicopathologic analysis of gastric mucosa-associated lymphoid tissue lymphoma with or without c-Met expression.

Extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT) lymphoma of the stomach is mainly associated with Helicobacter pylori infection, and H. pylori eradication therapy is often effective. However, 20-30% of the cases of MALT lymphoma are resistant to the eradication therapy, and translocation of the API2-MALT1 gene is often found in these cases.

Overexpression of folate receptor alpha is an independent prognostic factor for outcomes of pancreatic cancer patients.

Pancreatic cancer has a poor prognosis; hence, novel prognostic markers and effective therapeutic targets should be identified. We aimed to evaluate folate receptor alpha (FR-α) expression in pancreatic cancer and examine its association with clinicopathological features. We utilized tissue samples from 100 primary pancreatic cancer patients who underwent surgery.

Gastric neuroendocrine tumor arising from heterotopic pancreas.

There are few English reports on secondary tumors from heterotopic pancreas. Here, we describe a case of gastric neuroendocrine tumor (NET) arising from heterotopic pancreas. A 72-year-old woman underwent esophagogastroduodenoscopy as part of a general health check-up.

Diffuse Intestinal Ganglioneuromatosis Showing Multiple Large Bowel Ulcers in a Patient with Neurofibromatosis Type 1.

A 67-year-old Japanese man with neurofibromatosis type 1 underwent right hemicolectomy owing to abscess formation around the cecum. A pathological analysis revealed diffuse intestinal ganglioneuromatosis in the cecum and colon. Colonoscopy performed eight months after hemicolectomy revealed multiple ulcers throughout the colon and rectum.

A possible new morphological variant of mantle cell lymphoma with plasma-cell type Castleman disease-like features.

Mantle cell lymphoma (MCL) is an aggressive B-cell lymphoma characterized by overexpression of cyclin D1 resulting from t(11;14)(q13;q32) translocation. Herein, we report 3 cases of MCL with features of plasma cell-type Castleman disease (CD). The 3 patients were all men, ranging from 51 to 74 years in age, and they all presented with systemic lymphadenopathy with anemia, hypoalbuminemia, elevated serum levels of C-reactive protein, and polyclonal hypergammaglobulinemia.

Association between CT-Diagnosed Pneumonia and Endoscopic Submucosal Dissection of Gastric Neoplasms.

Background/aims: This prospective cohort study aimed to elucidate the incidence and characteristics of pneumonia associated with endoscopic submucosal dissection (ESD) of gastric neoplasms using CT.

Methods: We included consecutive 188 patients with gastric neoplasms treated with ESD. All patients underwent CT before ESD and the day after ESD.