Of the following which is the most common site for metastasis in lung cancer?

RRB Staff Nurse Delhi-2015

Medical & Surgical Nursing

Easy

Appeared in: RRB Staff Nurse Delhi-2015

Explanation

The liver is one of the most frequent sites for distant metastasis in lung cancer, along with the brain, bones, and adrenal glands.
Lung cancer cells often spread through the bloodstream (hematogenous route).
The liver receives a very large blood supply, filtering blood from both the portal and systemic circulations, which increases the probability of circulating tumor cells from the lungs lodging there.
This aligns with the 'seed and soil' theory, where the liver's microenvironment provides a fertile 'soil' for the cancer 'seeds' to grow.

Option A: While the kidneys can be a site for metastasis from lung cancer, it is significantly less common compared to the liver, brain, bones, and adrenal glands.
Option B: Metastasis to the stomach from a primary lung cancer is a rare event.
Option D: The spleen is a very rare site for metastasis from any cancer, including lung cancer. Its unique microanatomy and immune function are thought to be hostile to the growth of tumor cells.

Visual 1: Diagram - An illustration showing the primary tumor in the lung and arrows indicating the common pathways of hematogenous metastasis to the brain, liver, adrenal glands, and bones. This helps visualize the concept of distant spread.
Visual 2: Table - A comparative table listing primary cancers (like lung, breast, colon) and their most common metastatic sites, highlighting the frequency of liver metastasis from lung cancer.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Common sites of metastasis for lung cancer as background academic context rather than a clinical decision trigger.
Nurses must monitor lung cancer patients for signs and symptoms of liver metastasis, which include jaundice (yellowing of skin/eyes), right upper quadrant abdominal pain, nausea, weight loss, and ascites (fluid in the abdomen).
Regular monitoring of liver function tests (LFTs), such as ALT, AST, and bilirubin, is a crucial part of follow-up care for lung cancer patients to detect liver involvement early.
What if? If a patient with lung cancer presents with new-onset seizures or persistent headaches, the nurse should suspect brain metastasis (another common site) and escalate care for immediate neurological assessment and imaging.

How to Approach the Question

First, identify the key terms in the question: 'lung cancer', 'metastasis', and 'most common site'.
This is a factual recall question. Access your knowledge about the pathophysiology of lung cancer and its patterns of spread.
Recall the common sites of metastasis for lung cancer. A helpful mnemonic is BLAB: Bones, Liver, Adrenals, Brain.
Evaluate the given options (Kidney, Stomach, Liver, Spleen) against this list.
The liver is on the list of common sites. The other options are either uncommon (Kidney) or rare (Stomach, Spleen).
Therefore, select Liver as the most common site among the choices provided.

Concept Tested & Keywords

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