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Reversible changes in cell - Coggle Diagram
Reversible changes in cell
Mucoid (Myxomatous change)
Epithelial mucin (Catarrhal inflammation in mucous membrane --> respiratory track in common cold)
Connective tissue mucin (Myxomatous changes in some tumors like myxomas)
Fatty (steatosis) (Neutral fats)
Commonly, Fatty liver. others (heart, muscles and kidneys)
Hydropic (swelling)
Vacuolar degeneration
Pigments
Exogenous (iii)
ingested
Blue line of chronic lead poisoning at gum line
Carotenaemia: yellow skin due to excessive ingestion of carotene in carrots
Argyria: chronic ingestion of silver compounds
Ingected (Tattooing)
By India ink or carbon into the dermis
Inhaled
Anthracosis: Black coloration of lungs due to carbon deposition--> inflammation and fibrosis
Endogenous
Melanin
Hyperpigmentation
Pigmented tumors
Benign (nevi)
Malignant (Melanoma)
Chloasma of pregnancy
Prolonged exposure to sun
Hypopigmentation
Albinism: deficiency in tyrosinase activity--> no melanin is synthesized
Leucoderma: partial albinism
Vitiligo: local hypopigmentation
Lipofuscin
Hemoglobin-derived
Haemosiderin
Bilirubin
Acid haematin (Haemozoin)
Pathologic calcification
Metastatic
Dystrophic
Hyaline
Glassy eosinophilic appearance when stained with H&E
Extracellular (hyaline deposition in old scars)
Intracellular (Mallory bodies in hepatocytes of alcoholic injury)