Feature common to carcinoma pancreas, lungs,stomach is,a) Retinoblastomab) Migratory thrombophlebitisc) Ascitesd) DIC
## **Core Concept**
The question tests knowledge of paraneoplastic syndromes associated with various cancers. Paraneoplastic syndromes are conditions that result from the immune response to a cancer, but not due to direct local effects of the tumor cells. Different cancers can cause similar paraneoplastic syndromes.
## **Why the Correct Answer is Right**
Migratory thrombophlebitis, also known as Trousseau syndrome, is a paraneoplastic phenomenon characterized by recurrent, migratory episodes of venous thrombosis. It is commonly associated with **pancreatic cancer** but can also be seen in cancers of the **lung** and **stomach**, among others. This condition occurs due to the secretion of pro-coagulant substances by the tumor cells, leading to a hypercoagulable state.
## **Why Each Wrong Option is Incorrect**
- **Option A: Retinoblastoma** is a type of eye cancer primarily affecting children and is not commonly associated with carcinomas of the pancreas, lungs, or stomach in the context of a shared paraneoplastic syndrome.
- **Option C: Ascites** can be associated with many conditions, including cirrhosis, heart failure, and peritoneal carcinomatosis (spread of cancer to the peritoneum), but it is not a specific paraneoplastic syndrome characteristic of these cancers.
- **Option D: DIC (Disseminated Intravascular Coagulation)** is a condition that can be associated with many severe illnesses, including cancers, but it is not as specifically linked to the combination of pancreatic, lung, and stomach cancers as migratory thrombophlebitis.
## **Clinical Pearl / High-Yield Fact**
A classic clinical pearl is that Trousseau syndrome (migratory thrombophlebitis) is often associated with **pancreatic adenocarcinoma**. However, its occurrence in other malignancies like lung and gastric cancer makes it a feature that can be common to these cancers as well. Recognizing this association can lead to an earlier diagnosis of an underlying malignancy in patients presenting with recurrent thromboses.
## **Correct Answer: B. Migratory thrombophlebitis**