Malignant transformation of a gastric hyperplastic polyp in a context of Helicobacter pylori-negative autoimmune gastritis: a case report.

Background: Gastric foveolar hyperplastic polyps (GFHPs) are common findings in clinical practice. GFHPs commonly arise in a background of chronic atrophic gastritis, including autoimmune gastritis (type A gastritis), and have a potential risk of malignant transformation.

Case Presentation: In 2005, a 55-year-old Japanese woman underwent upper endoscopy at another hospital and was found to have a pedunculated polyp (10 mm in diameter) on the greater curvature of the lower gastric body.

Metastatic Ovarian Tumors Originating From a Small Bowel Adenocarcinoma - A Case Report and Brief Literature Review.

Approximately 1.6% of tumors metastatic to the ovary of nongynecologic origin are from a small bowel adenocarcinoma (SBA). However, the incidence of SBA is extremely rare (0.

Aortic Intimal Sarcoma Contributes to Atherosclerotic Renovascular Hypertension: An Autopsy Case Report and Review of the Literature.

An autopsy of a 70-year-old man with multiple bone metastases from a malignancy of unknown origin (MUO) and renovascular hypertension revealed an aortic intimal sarcoma (AIS) in the right renal artery accompanied by atherosclerotic changes. AIS appeared as aggregated mutton fat-like translucent particles arising from the intima of the branching portion of the right renal artery and was composed of undifferentiated, fine spindle cells with thicket-like proliferation. AIS was confirmed by immunohistopathology, showing the loss of the lumen lined by CD31-positive endothelium and the expression of CD31, keratin, and vimentin in the viable part of the tumor.

[SMALL CELL CARCINOMA OF THE PROSTATE: A CASE REPORT OF RELATIVE LONG-TERM SURVIVAL].

Small cell carcinoma of the prostate (SCCP) is rare, and no standard treatment regimen has yet been established. The overall prognosis remains poor. We experienced a case who obtained relative long-term survival with two types of chemotherapy treatments.

Potentially disseminated solitary fibrous tumor of the pleura: a case report.

We report a case involving a female patient with frequent relapse, pleural dissemination, and port site recurrence (PSR) of a pleural solitary fibrous tumor (SFT). At the age of 55 years, she underwent tumor resection via video-assisted thoracoscopic surgery (VATS). The tumor arose from the mediastinal pleura; it was 7 cm in diameter and well demarcated.