Commonly involved Lymph nodes during metastasis from carcinomas of oral cavity is
**Core Concept**
The spread of cancer from the oral cavity to regional lymph nodes is a common phenomenon, and understanding the involved lymph nodes is crucial for staging and treatment planning. The lymphatic drainage of the oral cavity is complex, with multiple groups of lymph nodes receiving drainage from different parts of the mouth.
**Why the Correct Answer is Right**
The lymph nodes commonly involved in metastasis from carcinomas of the oral cavity are the jugularologistic and submandibular nodes. These nodes receive lymphatic drainage from the anterior two-thirds of the tongue, the floor of the mouth, the buccal mucosa, and the lower lip. The jugularologistic nodes, also known as the jugulo-digastric nodes, are located in the neck, below the angle of the mandible. They are a common site for metastasis from tumors of the oral cavity. The submandibular nodes, located below the mandible, also receive drainage from the oral cavity and are another common site for metastasis.
**Why Each Wrong Option is Incorrect**
**Option A:** The cervical nodes, while involved in metastasis from many cancers, are not the primary site for metastasis from oral cavity carcinomas. The cervical nodes receive drainage from a wide area, including the neck, chest, and abdomen.
**Option B:** The inguinal nodes are not directly involved in the lymphatic drainage of the oral cavity. They receive drainage from the lower extremities and the external genitalia.
**Option C:** The axillary nodes are not involved in the lymphatic drainage of the oral cavity. They receive drainage from the upper limb and the breast.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that the lymphatic drainage of the oral cavity is complex, and multiple groups of lymph nodes can be involved in metastasis. A thorough knowledge of the lymphatic drainage of the oral cavity is crucial for accurate staging and treatment planning.
**Correct Answer:** C. submandibular nodes