Most common tumor of spine is: September 2008
**Core Concept**
The most common tumor of the spine is related to the **metastatic spread** of cancer to the spinal column. This occurs due to the **hematogenous spread** of malignant cells from other parts of the body. The spine is a common site for metastasis due to its rich blood supply.
**Why the Correct Answer is Right**
The correct answer is related to the fact that **metastatic tumors** are the most common type of spinal tumor, outnumbering primary spinal tumors. These metastatic lesions often originate from **breast, lung, or prostate cancer** and spread to the spine through the bloodstream. The mechanism involves the seeding of malignant cells in the spinal vertebrae, which can lead to **vertebral compression fractures** and other complications.
**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it is not specified, but typically, options like this might refer to a less common primary spinal tumor.
**Option B:** Incorrect as it is also not specified, but could potentially refer to a type of tumor that is not the most common.
**Option C:** Incorrect because, again, it's unspecified, but might refer to a tumor type that is less frequent than metastatic tumors.
**Option D:** Incorrect for similar reasons as options A, B, and C, lacking specificity but potentially referring to a less common spinal tumor type.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that **metastatic spinal tumors** are more common than primary spinal tumors, and their management often involves a multidisciplinary approach including **radiation oncology, medical oncology, and orthopedic surgery**. Recognizing the signs and symptoms of spinal metastasis, such as **back pain** and **neurological deficits**, is crucial for early diagnosis and treatment.
**Correct Answer:** D. Metastasis