**Core Concept**
Adenomatoid odontogenic tumour (AOT) is a type of odontogenic tumour that arises from the dental lamina or its remnants. Histologically, AOT is characterized by its unique cellular and tissue architecture.

**Why the Correct Answer is Right**
AOT typically exhibits a distinctive pattern of epithelial islands, cords, and tubules surrounded by a loose fibrous stroma. The epithelial elements are often arranged in a palisading or cord-like fashion, with a characteristic 'duct-like' or 'tubular' appearance. This distinctive histological pattern is a hallmark of AOT and helps to differentiate it from other odontogenic and non-odontogenic tumours.

**Why Each Wrong Option is Incorrect**
**Option A:** Amyloid deposition is not a characteristic feature of AOT.
**Option B:** Squamous cell carcinoma is a malignant tumour that may exhibit some histological overlap with AOT, but it is not a characteristic feature of AOT.
**Option C:** Calcification is not a distinctive feature of AOT, although it may be present in some cases.

**Clinical Pearl / High-Yield Fact**
AOT is a relatively rare tumour, but it is often associated with unerupted teeth and may be found in the mandible or maxilla. It is essential to consider AOT in the differential diagnosis of any odontogenic tumour, particularly in cases where there is a characteristic histological pattern of epithelial islands and cords.

**Correct Answer:** C. Calcification is not a distinctive feature of AOT, although it may be present in some cases.