True statement (s) about salivary gland tumours -a) Pleomorphic adenoma can arise in submandibular glandb) Wahim’s tumour arises from submandibular glandc) Pleomorphic adenoma is most common tumour of sub mandibular glandd) Acinic cell Ca is most malignante) Frey’s syndrome is due to injury of auriculotemporal nerve
**Core Concept**
Salivary gland tumors are a diverse group of neoplasms that can arise in the major and minor salivary glands, exhibiting varying degrees of malignancy and histological characteristics.
**Why the Correct Answer is Right**
Pleomorphic adenoma, also known as benign mixed tumor, is the most common type of salivary gland tumor, accounting for approximately 60-70% of all cases. It can arise in any of the major salivary glands, including the parotid, submandibular, and sublingual glands. Wahin's tumor, also known as warthin tumor, is a benign tumor that predominantly arises in the parotid gland, but it can also occur in the submandibular gland. Acinic cell carcinoma is a malignant tumor that is relatively rare, accounting for approximately 1-3% of all salivary gland cancers. Frey's syndrome, also known as gustatory sweating or auriculotemporal syndrome, is a clinical condition caused by aberrant regeneration of nerve fibers between the parotid gland and the auriculotemporal nerve, leading to excessive sweating and flushing of the skin in response to stimuli.
**Why Each Wrong Option is Incorrect**
**Option A:** Pleomorphic adenoma is indeed the most common salivary gland tumor, and it can arise in the submandibular gland, making this statement correct and not a distractor.
**Option B:** Wahin's tumor is not exclusive to the submandibular gland but can also occur in the parotid gland, making this statement partially incorrect.
**Option C:** Pleomorphic adenoma is not the most common tumor of the submandibular gland; it is the most common tumor overall, but other types of tumors are more common in the submandibular gland.
**Option D:** Acinic cell carcinoma is not the most malignant type of salivary gland tumor; it is relatively rare and has a relatively good prognosis compared to other types of salivary gland cancers.
**Clinical Pearl / High-Yield Fact**
It is essential for clinicians to recognize the distinct characteristics and clinical presentations of various salivary gland tumors, as some may require specific treatment approaches, and others may be associated with increased risk of malignancy.
**Correct Answer: A. Pleomorphic adenoma can arise in submandibular gland