Which of the following is not a cancer?

Appeared in: MP CHO -2021 (Shift 1st)

Explanation

Glaucoma is a disease of the eye, not a form of cancer.
It is characterized by increased pressure inside the eye (intraocular pressure), which leads to progressive damage of the optic nerve and can result in vision loss.
The underlying pathology is related to aqueous humor fluid dynamics in the eye, not the uncontrolled, abnormal cell proliferation that defines cancer.

Option B: This is incorrect because Leukemia is a type of cancer that affects the blood and bone marrow.
Option C: This is incorrect because Carcinoma is a major category of cancer that arises from epithelial cells.
Option D: This is incorrect because Sarcoma is a type of cancer that originates in connective tissues like bone, muscle, or fat.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Differentiation between cancerous (malignant) and non-cancerous diseases as background academic context rather than a clinical decision trigger.
Nurses must understand the fundamental difference between cancer and other chronic diseases for accurate patient assessment, education, and care planning.
Explaining to a patient that they have glaucoma, not cancer, can alleviate significant anxiety and help them focus on the correct treatment plan, which involves managing eye pressure, not chemotherapy or radiation.
What if? If a patient's chart mentioned a 'melanoma', the nurse should recognize this as a malignant cancer of melanocytes (a type of skin cancer), despite the '-oma' suffix which usually denotes a benign tumor. This highlights the importance of knowing specific exceptions in cancer nomenclature.

How to Approach the Question

First, identify the negative keyword 'not' in the question. This means you are looking for the option that does not fit the category 'cancer'.
Next, define the term 'cancer' in your mind: an uncontrolled, malignant growth of cells.
Evaluate each option against this definition: Is Leukemia a cancer? Yes, of the blood. Is Carcinoma a cancer? Yes, of epithelial tissue. Is Sarcoma a cancer? Yes, of connective tissue.
Evaluate the remaining option: Is Glaucoma a cancer? No, it's a disease of the eye related to pressure.
Select the option that is the exception, which is Glaucoma.

Concept Tested & Keywords

Concept Tested: Differentiation between cancerous (malignant) and non-cancerous diseases.
Stem keywords: cancer
Lead-in keywords: not
Negative lead-in flag: The question asks to identify the option that is NOT a cancer, requiring elimination of the options that are types of cancer.

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Practise the full MP CHO -2021 (Shift 1st)

Attempt every question from this paper in a timed mock, then review the full solution for each one.