P22 - Cytologic Biopsy of Cutaneous Masses Flashcards
inflammatory lesions are characterized by
- typical leukocytes
neutrophilic sterile inflammation contains what kind of exudate
- non-purulent
- non-septic
neutrophilic sterile inflammation cytologic findings
- non-degenerate neutrophils
- lymphocytes and macrophages
- no bacteria
examples of neutrophilic sterile inflammation
- seromas
- foreign body
- necrosis
neutrophilic septic inflammation contains what kind of exudate
- suppurative or purulent inflammation
neutrophilic septic inflammation cytologic findings
- degenerate neutrophils (keryolyzed)
- microorganisms
specific stains for microorganisms (2)
- modified ziehl-neelsen stains for Mycobacterium infections
- fontana, periodic acid schiff (PAS) for fungal infections
chronic active inflammation cytologic findings
- neutrophilic-macrophagic inflammation
- mixed cell population
granulomatous inflammation cytologic findings
- macrophagic inflammation
- mixed cell population (macrophages and multinucleated giant cells)
eosinophilic inflammation cytologic findings
- neutrophils
- eosinophils
eosinophilic inflammation due to
- hypersensitivity reactions
neoplastic lesions characterized by presence of tissue cells with changes in
- nucleus and cytoplasm
classifications of neoplastic lesions
- round cell
- epithelial cell
- spindle cell
benign epithelial cell neoplasm ending
- oma
malignant epithelial cell neoplasm ending
- carcinoma
benign spindle cell neoplasm ending
- oma
malignant spindle cell neoplasm ending
- sarcoma
benign neoplasms characteristics (3)
- orderly cell proliferation (monomorphism)
- no inflammatory cells
- no malignant cells
clinical significance of benign neoplasms (3)
- harmless space occupying lesions
- non-invasive
- leads to obstruction blood vessels and other organs
characteristics of hematomas
- bloody non-clotting fluid
- absence of platelets
characteristics of lipomas
- soft slow-growing painless masses
- hypocellular
- few squames
- few RBCs
special stains for lipomas
- sudan III
- oil red O (ORO)
characteristics of sialoceles
- firm painless mass in sub maxillary space
- fluid that is red-black viscous fluid
criteria for malignancy (3)
- cellular changes
- cytoplasmic changes
- nuclear changes