The cancer arising from mesodermal cells constituting the various connecting tissues is called?

Appeared in: Tripura CHO - 2021

Explanation

Sarcomas are malignant tumors that originate from mesenchymal cells.
Mesenchymal cells are derived from the mesoderm, one of the three primary germ layers in an embryo.
These cells differentiate to form the body's connective tissues, which include bone, cartilage, fat, muscle, and vascular (blood vessel) tissues.
Therefore, a cancer arising from mesodermal connective tissue is correctly termed a sarcoma.

Option A: Carcinomas arise from epithelial cells, which line the internal organs and outer surfaces of the body. These cells are derived from the ectoderm and endoderm, not the mesoderm.
Option C: Lymphomas are cancers that originate in the cells of the lymphatic system (lymphocytes). While these cells are technically of mesenchymal origin, 'Lymphoma' is a more specific classification for cancers of lymphoid tissue.
Option D: Leukemias are cancers of the blood-forming (hematopoietic) cells in the bone marrow. They are often called 'liquid cancers' because they generally do not form solid tumors.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Classification of Cancers by Tissue of Origin as background academic context rather than a clinical decision trigger.
Understanding the tissue of origin is crucial for diagnosis, staging, and treatment. Sarcomas, for instance, often require different chemotherapy regimens and surgical approaches than carcinomas.
Sarcomas are relatively rare compared to carcinomas, accounting for less than 1% of all adult cancers.
Nurses play a key role in educating patients about their specific cancer type, as treatment plans and side effects can vary significantly between a sarcoma and a carcinoma.

How to Approach the Question

First, identify the key terms in the question stem: 'cancer', 'mesodermal cells', and 'connecting tissues'.
This is a factual recall question that tests your knowledge of the fundamental classification of neoplasms.
Recall the four main types of cancer based on their cell of origin.
Match the term 'mesodermal' and 'connective tissue' to the correct cancer type from the options.
Systematically eliminate the incorrect options: Carcinomas are from epithelial tissue, Lymphomas from lymphoid tissue, and Leukemias from blood-forming cells.
Conclude that Sarcoma is the term for cancers of mesenchymal (connective) tissue, which is derived from the mesoderm.

Concept Tested & Keywords

QzmLQq5fCYqTLl9mjK3MRf

E6 Pathology- ROBBINS & COTRAN PATHOLOGIC BASIS OF DISEASE 10TH Ed p. 276-278

E6 Pathology-Vandana Puri & Kavita Gaur Textbook of Pathology and Genetics p. 113-115

E6 Nursing Brunner Adult Health 3SA Vol 2 Part 3 p. 80-82

Practise the full Tripura CHO - 2021

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