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Neoplasia
| Term | Definition |
|---|---|
| Metaplasia | change in cell/epithelium/mesenchymal |
| Dysplasia | abnormal cells -->loss of orientation, hyperchromasia, increased mitosis |
| Tumor like lesions | Choristoma and Hamartoma |
| Hamartoma | Benign mature proliferation of disorganized tissue native to the organ |
| Choristoma | Ectopic presence of normal tissue or Normal cells/tissues, that are present in abnormal locations. |
| Desmoplasia | Excessive/abundant collagenous stroma scirrhous/stony tumour in female breast. |
| Suffix for Benign tumors of mesenchymal cells | -oma |
| Suffix for Benign Epithelial tumours | |
| Malignant tumors of mesenchymal cells | SARCOMA |
| Malignant epithelial tissue | CARCINOMA |
| Papilloma | Benign epithelial neoplasms producing fingerlike or warty projections from epithelial surfaces |
| Cystadenomas | Benign epithelial neoplasms producing large cystic masses, such as in the ovary, from epithelial surfaces |
| Papillary cystadenomas | papillary projections that protrude into cystic spaces |
| Polyp | When the neoplasm projects above a mucosal surface into the lumen |
| Anaplasia | Lack of differentiation |
| Anaplasia, cancer cells often exhibit telltale morphologic changes | Pleomorphism refers to variation in cell size and shape Abnormal nuclear morphology Undifferentiated cancers contain cells in mitosis, reflecting their high rate of proliferation. Loss of polarity |
| Carcinoma in situ. | When dysplasia is severe and involves the full thickness of the epithelium but the lesion does not penetrate the basement membrane. |
Created by:
Jameel D. Wilson
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