**Question:** Incidence of most common malignant tumours in women is

A. Breast
B. Ovary
C. Lung
D. Cervix

**Core Concept:**
The question is asking about the most common malignant tumours that affect women. Malignant tumours are cancerous growths that can spread to other parts of the body and harm nearby tissues and organs. In women, various organs and tissues have an increased risk of developing malignant tumours due to hormonal, hereditary, or lifestyle factors.

**Why the Correct Answer is Right:**
The correct answer is D. Cervix, because cervical cancer (also known as carcinoma of the cervix) is the most common malignant tumour affecting women worldwide. The human papillomavirus (HPV) is the primary cause of cervical cancer. HPV infection leads to the abnormal growth and development of cervical cells, which may progress to cervical cancer over time.

**Why Each Wrong Option is Incorrect:**
A. Breast (Option A) is not the most common malignant tumour in women. Breast cancer is the second most common and has a higher incidence in developed countries.

B. Ovary (Option B) is less common than breast cancer but still affects women. Ovarian cancer primarily occurs in postmenopausal women and is associated with genetic factors such as BRCA1/2 mutations.

C. Lung (Option C) is more common than cervical cancer in men but has a lower incidence in women compared to breast and ovarian cancers.

**Clinical Pearl:**
Understanding the most common malignant tumours in women is crucial for healthcare professionals to detect, diagnose, and manage these conditions. Regular screening and awareness programs can help detect precancerous lesions and increase early detection rates for cervical cancer, improving patient outcomes.