A 20 year old man from hilly areas presented with epistaxis. His DSA showing sphenopalatine branch of maxillary artery is shown below. The arrow most likely points to which pathology?
**Core Concept**
The sphenopalatine artery, a branch of the maxillary artery, is a common source of anterior epistaxis. This artery is responsible for supplying blood to the nasal cavity and is prone to rupture due to its anatomical location and blood pressure.
**Why the Correct Answer is Right**
The sphenopalatine artery is a terminal branch of the maxillary artery, which arises from the external carotid artery. The artery is located in the pterygopalatine fossa and enters the nasal cavity through the sphenopalatine foramen. The artery is surrounded by a plexus of veins, which are prone to bleeding in case of trauma or hypertension. In this case, the DSA showing the sphenopalatine branch of the maxillary artery suggests that the pathology is likely related to this artery.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option would be incorrect as it does not match the anatomy of the sphenopalatine artery or the description provided.
* **Option B:** This option would be incorrect as it does not specify the pathology related to the sphenopalatine artery.
* **Option C:** This option would be incorrect as it does not match the anatomy of the sphenopalatine artery or the description provided.
**Clinical Pearl / High-Yield Fact**
The sphenopalatine artery is a common source of anterior epistaxis due to its anatomical location and blood pressure. It is essential to identify this artery in cases of epistaxis to determine the correct treatment approach.
**Correct Answer: C.