Question

Carcinoma refers to:
(a) Malignant tumour of the connective tissue
(b) Malignant tumour of the skin or mucous membrane
(c) Malignant tumour of the colon
(d) Benign tumour of the connective tissue

Answer 1

Hint: Carcinoma is derived from the Greek word “karkinoma” meaning sore ulcer and cancer. It begins in a tissue that lines the inner or outer surfaces of the body, and that arises from cells originating in the endodermal, mesodermal or ectodermal germ layer during embryogenesis.

Complete answer:
Carcinoma is a type of cancer that originates in cells that make up the dermis or the tissue lining organs, such as the liver or kidneys.
Carcinoma is a disorder of malignant cells that develops from epithelial cells. Carcinomas happen when the genetic material of a cell is deformed or changed and the cell starts to divide uncontrollably and become malignant.
Different types of Carcinoma are:
Squamous cell carcinoma: This type of carcinoma can also be found in the skin and other parts of the body, such as cell lining.
Renal cell carcinoma: This is the most prevalent type of kidney cancer. It typically grows as a single tumour inside the kidney.
Ductal carcinoma in situ (DCIS): This is an ailment where cancer cells are found within the ducts of the breast.
Adenocarcinoma: This is a type of carcinoma that starts within cells called glandular cells. These cells produce mucus and other fluids.
So, the correct answer is “Malignant tumour of the skin or mucous membrane”.

Note: Carcinoma is only a type of cancer. Like other sorts of cancer, carcinomas are abnormal cells that divide without control. They are capable of spreading to other parts of the body but don't always. "Carcinoma in situ" stays in the cells where it started and does not spread. Not all cancers are carcinoma but all carcinomas are cancers.