Crystallizing galactocele: A rare case report and review of literature.

Crystallizing galactocele is an uncommon condition that produces a viscous, chalky substance on fine needle aspiration cytology. (FNAC). Both the diagnosis and the management of this illness include the use of FNAC.

Primary Breast Tumors with Mesenchymal Morphology.

Mesenchymal tumors of the breast are rare. Few epithelial tumors also have mesenchymal components. It is crucial to identify these as per histogenesis.

Determining PD-L1 expression in head and neck squamous cell carcinoma using immunohistochemistry.

Background: Advanced head and neck squamous cell carcinoma (HNSCC) has limited treatment options. Programmed death-ligand1 (PD-L1) expressed by tumor cells interacts with PD-1 receptor on T lymphocytes leading to immune evasive response and survival advantage. Therapy with immune check-point inhibitors target PD-1/PD-L1 blockade inducing tumor regression.