In which of the following grades does a tumor possess cells that are moderately differentiated?

AIIMS CRE SNO - 2023

Pathology & Genetics

Easy

Appeared in: AIIMS CRE SNO - 2023

Explanation

Tumor grading classifies cancers based on how abnormal the cells appear under a microscope.
Grade II tumors are defined as being 'moderately differentiated'.
This means the cancer cells have some abnormal features but still bear a resemblance to the normal, original tissue cells.
They are intermediate in appearance and behavior between the slow-growing, well-differentiated Grade I tumors and the aggressive, poorly differentiated Grade III tumors.

Option A: Grade IV tumors consist of undifferentiated or anaplastic cells. These are the most abnormal-looking cells and have lost all resemblance to the original tissue.
Option B: Grade I tumors are well-differentiated. The cells in these tumors look very much like normal cells and are associated with the slowest growth.
Option D: Grade III tumors are poorly differentiated. The cells are highly abnormal and have very little resemblance to normal cells, indicating aggressive behavior.

Visual 1: Infographic - A diagram showing the microscopic appearance of cells from Grade I to Grade IV. This would visually demonstrate the progressive loss of differentiation, with Grade I cells looking organized and similar to normal tissue, and Grade IV cells appearing chaotic and primitive.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Tumor grading and cellular differentiation as background academic context rather than a clinical decision trigger.
Tumor grade is a critical component of the pathology report and has significant prognostic value. A higher grade (III or IV) generally corresponds to a more aggressive cancer and a poorer prognosis.
The grade of a tumor directly influences treatment decisions. High-grade tumors often require more aggressive treatment, such as higher doses of chemotherapy or radiation, compared to low-grade tumors.
What if? If a patient's biopsy report was changed from Grade II to Grade IV, the treatment plan would become much more aggressive. The patient's prognosis would be considered worse, and they would be monitored more closely for metastasis.

How to Approach the Question

This is a factual recall question that tests your knowledge of a standard classification system in pathology.
First, identify the key terms in the question: 'tumor grade' and 'moderately differentiated'.
Recall the different grades of tumors (typically I, II, III, IV).
Match the term 'moderately differentiated' to its corresponding grade.
Systematically review the options to find the correct match. Grade I is well-differentiated, Grade II is moderately differentiated, Grade III is poorly differentiated, and Grade IV is undifferentiated.
Select the option that correctly links the grade with the level of differentiation.

Concept Tested & Keywords

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