histology, pathology, histopthology,

BACKGROUND: Macrophages account for 30%-50% of the total inflammatory cell population of ''tumor microenvironment'' that plays an important role in cancer metastasis. M2 macrophages are designated as tumor-associated macrophages (TAMs). They are known to orchestrate all the stages of tumor progression. CD163 is TAMs-M2-specific marker. AIMS: The aim of the study was to evaluate the role of TAMs using CD163 in different histological grades of oral squamous cell carcinoma (OSCC)...

Duodenal polyps are rare pathologies. They can be single or multiple, like in familial adenomatous polyposis or Gardner syndrome. Histologically they are usually bening: adenomas, myomas, lipomas, carcinoids, Brunner adenomas or hamartomas. Malignant lesions are mainly adenocarcinomas localized in the ampulla of the Vater area. Small polyps localized in the superior or descending segment of duodenum can be usually removed endoscopically. Larger or more distally localized polyps must be excised surgically. The largest polyps, up to several centimeters, are adenomas...