NURS 3220 Lecture Notes - Lecture 25: Histology, Sleep Disorder, Weakness
Document Summary
Cancer: diseases in which abnormal cells divide without control and are able to invade other tissues. Cells go into overdrive, without any restraints: derived from greek word for crab, karkinoma. Tumor: also referred to as a neoplasm new growth. Benign (named according to tissue they come from) malignant. Low mitotic index (rate at which they multiply) Benign tumors: named according to the tissues from which they arise and include the suffix - oma . Leiomyoma: meningioma, may progress to cancer, don"t infiltrate, don"t spread (can be problematic based on where they arise from, malignant tumors, named according to the tissues from which they arise. Preinvasive epithelial malignant tumors of glandular or epithelial origin that have not broken through the basement membrane or invaded the surrounding stroma. Which of the following statements is true: all neoplasms are cancerous, benign growths are cancerous, malignant tumors have slow growth, cancer refers to a malignant tumor.
