Anatomy_of_Carcinoma_Lung. Describing various types of lung cancer

PPT is on Ca lung, describing anatomy of lung and various types of lung cancer.

1. Anatomy of Carcinoma Lung Overview of Lung Cancer Anatomy

2. Introduction • Carcinoma lung is the most common type of lung cancer. • Classified broadly into small cell lung carcinoma (SCLC) and non-small cell lung carcinoma (NSCLC). • Anatomical understanding is crucial for diagnosis, staging, and treatment planning.

3. Gross Anatomy of Lung • Right lung: 3 lobes (superior, middle, inferior). • Left lung: 2 lobes (superior, inferior) + cardiac notch. • Each lobe is divided into bronchopulmonary segments. • Cancer can arise in central (hilar) or peripheral regions.

4. Microscopic Anatomy • Respiratory epithelium: pseudostratified columnar ciliated cells with goblet cells. • Alveoli: Type I and Type II pneumocytes. • Carcinomas originate from epithelial lining of bronchi, bronchioles, or alveoli.

5. Types of Carcinoma Lung • Small Cell Carcinoma (SCLC) – aggressive, central location. • Non-Small Cell Carcinoma (NSCLC): – Adenocarcinoma: peripheral, most common type. – Squamous cell carcinoma: central, linked to smoking. – Large cell carcinoma: poorly differentiated.

6. Spread of Carcinoma Lung • Local invasion: pleura, chest wall, mediastinum. • Lymphatic spread: hilar, mediastinal nodes. • Hematogenous spread: brain, bone, liver, adrenal glands.

7. Clinical Relevance • Anatomical knowledge guides biopsy and surgery. • Determines resectability of tumor. • Helps predict symptoms like cough, hemoptysis, chest pain. • Essential for staging (TNM classification).