## **Core Concept**
Psammoma bodies are concentrically laminated, calcified structures often found in certain types of tumors. They are a type of dystrophic calcification and are particularly associated with neoplasms of epithelial origin. The presence of psammoma bodies can be a diagnostic clue in pathology.

## **Why the Correct Answer is Right**
Psammoma bodies are characteristically found in **Papillary thyroid carcinoma (C)**, among other tumors like serous papillary ovarian carcinoma and meningioma. In papillary thyroid carcinoma, these bodies are a key histopathological feature, helping in the diagnosis. They are thought to result from the calcification of necrotic cells within the tumor.

## **Why Each Wrong Option is Incorrect**
- **Option A:** While certain types of tumors and tissues can exhibit calcification, psammoma bodies are not specifically characteristic of the condition represented by option A (which is not provided).
- **Option B:** Similarly, without the specific details of option B, it's understood that psammoma bodies are not a hallmark feature of that particular condition.
- **Option D:** This option is also incorrect as psammoma bodies are not typically associated with the condition it represents.

## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that the presence of psammoma bodies in a thyroid tumor biopsy is highly suggestive of **papillary thyroid carcinoma**. This feature can significantly aid in the diagnosis and subsequent management of the patient.

## **Correct Answer:** C. Papillary thyroid carcinoma.