| No. | Item | Definition |
|---|---|---|
| 1. | abscess | pus-filled infection pocket |
| 2. | adenocarcinoma | malignant gland-forming tumor |
| 3. | adenoma | benign glandular tumor |
| 4. | anaplasia | loss of cell differentiation |
| 5. | antibody | protein binding specific antigen |
| 6. | antigen | molecule recognized by antibody |
| 7. | apoptosis | programmed cell death |
| 8. | atrophy | decrease in tissue size |
| 9. | bacterium | single-celled microbe |
| 10. | basement membrane | thin layer under epithelium |
| 11. | benign | not cancerous |
| 12. | biomarker | biological diagnostic indicator |
| 13. | biopsy | tissue sample for diagnosis |
| 14. | block | embedded tissue for cutting |
| 15. | calcification | calcium deposition in tissue |
| 16. | carcinoma | cancer from epithelial cells |
| 17. | cell block | processed pellet of cells |
| 18. | chromatin | DNA-protein nuclear material |
| 19. | congestion | excess blood in tissue |
| 20. | cyst | fluid-filled sac |
| 21. | cytology | study of cells |
| 22. | cytoplasm | cell material outside nucleus |
| 23. | decalcification | removal of calcium from tissue |
| 24. | diagnosis | identification of disease |
| 25. | differential | possible diagnostic alternatives |
| 26. | differentiation | degree of cellular maturity |
| 27. | discordance | disagreement between findings |
| 28. | dysplasia | abnormal cell development |
| 29. | edema | swelling from excess fluid |
| 30. | embolus | traveling vessel blockage |
| 31. | epithelium | surface or lining tissue |
| 32. | exudate | protein-rich inflammatory fluid |
| 33. | fibrosis | excess fibrous tissue formation |
| 34. | fixation | preservation of tissue structure |
| 35. | formalin | common tissue fixative |
| 36. | frozen section | rapid intraoperative tissue exam |
| 37. | fungus | spore-forming organism |
| 38. | giant cell | very large multinucleated cell |
| 39. | grade | tumor aggressiveness score |
| 40. | granuloma | small nodular inflammatory lesion |
| 41. | grossing | macroscopic specimen examination |
| 42. | hemorrhage | bleeding from ruptured vessels |
| 43. | histology | microscopic study of tissues |
| 44. | hyaline | glassy homogeneous appearance |
| 45. | hyperplasia | increase in cell number |
| 46. | hypertrophy | increase in cell size |
| 47. | immunostain | antibody-based tissue stain |
| 48. | in situ | localized, not invasive |
| 49. | inclusion | abnormal intracellular material |
| 50. | infarct | tissue death from ischemia |
| 51. | inflammation | tissue response to injury |
| 52. | invasive | spreading into surrounding tissue |
| 53. | ischemia | reduced blood supply |
| 54. | lesion | area of abnormal tissue |
| 55. | leukemia | blood-forming tissue cancer |
| 56. | lymphoma | cancer of lymphatic tissue |
| 57. | malignant | cancerous and invasive |
| 58. | margin | edge of removed tissue |
| 59. | metaplasia | change to another cell type |
| 60. | metastasis | spread of cancer |
| 61. | microtome | instrument for cutting sections |
| 62. | mitosis | cell division process |
| 63. | mucin | slippery glycoprotein secretion |
| 64. | mucosa | lining membrane of passages |
| 65. | necrosis | death of cells or tissue |
| 66. | nodule | small rounded mass |
| 67. | nucleolus | dense structure within nucleus |
| 68. | nucleus | cell structure containing DNA |
| 69. | oncogene | cancer-promoting gene |
| 70. | paraffin | wax used for embedding |
| 71. | parenchyma | functional tissue of organ |
| 72. | pleomorphism | variation in cell shape |
| 73. | polyp | mucosal tissue projection |
| 74. | prognosis | predicted disease outcome |
| 75. | proliferation | increase in cell growth |
| 76. | reactive | non-neoplastic response to injury |
| 77. | receptor | cell protein binding signal |
| 78. | regeneration | replacement of damaged tissue |
| 79. | repair | healing of damaged tissue |
| 80. | sarcoma | cancer from connective tissue |
| 81. | section | thin slice of tissue |
| 82. | slide | glass for mounted specimen |
| 83. | smear | spread cells on slide |
| 84. | specimen | sample submitted for examination |
| 85. | stage | extent of disease spread |
| 86. | stain | dye used on tissue |
| 87. | stroma | supportive tissue framework |
| 88. | thrombus | blood clot in vessel |
| 89. | transudate | low-protein fluid leakage |
| 90. | tumor | abnormal mass of tissue |
| 91. | ulcer | open sore on tissue |
| 92. | urothelium | lining epithelium of urinary tract |
| 93. | vasculitis | inflammation of blood vessels |
| 94. | vesicle | small fluid-filled sac |
| 95. | vimentin | intermediate filament protein marker |
| 96. | virus | infectious particle requiring cells |
| 97. | viscera | internal organs in body cavities |
| 98. | xylene | solvent used in tissue processing |
| 99. | yeast | single-celled fungus |
| 100. | zygomycosis | fungal infection by zygomycetes |