Evaluation of biosafe alternative to eosin in hematoxylin and eosin staining procedure: A comparative study.

Background: Hematoxylin and eosin staining is the globally accepted staining technique for histology and histopathology sections. Hematoxylin is a natural dye as compared to eosin which is a synthetic dye manufactured from chemicals. Eosin acts as a counterstain to hematoxylin giving a sharp contrast to its blue color.

Recurrent adenoid cystic carcinoma of paranasal sinuses: A rare case report.

Adenoid cystic carcinoma (ACC) is a distinct salivary gland neoplasm that predominantly occurs in the minor salivary gland. ACC is an uncommon tumor that progress slowly affecting 5% of paranasal sinuses with high distant metastasis rate in advance stages. This salivary gland tumor is difficult to diagnose both clinically and histopathologically due to its indolent presentation and diverse histopathological patterns.