MyPathologyReport
December 1, 2023
Psammoma bodies are microscopic, rounded structures commonly found in some types of tumours. These bodies are characterized by concentric layers of calcium and proteins, giving them a lamellated or onion-like appearance under a microscope. The term “psammoma” is derived from the Greek words “psammos,” meaning sand, and “oma,” meaning tumour.
Psammoma bodies are commonly associated with tumours that show a papillary pattern of growth. In pathology, papillary refers to a finger-like projection of tissue with tumour cells lining the outside surface of the tissue.
Examples of tumours that often contain psammoma bodies:
- Papillary thyroid carcinoma: This is the most common type of thyroid cancer.
- Meningiomas: A meningioma is a tumour arising from the meninges, the layers of tissue covering the brain and spinal cord. Psammoma bodies are a characteristic feature of some meningiomas.
- Low grade serous carcinoma of the ovary: This is a slow-growing type of ovarian cancer.
- Serous carcinoma of the endometrium: This is an aggressive type of endometrial cancer.
About this article
This article was written by doctors to help you read and understand your pathology report. Contact us if you have questions about this article or your pathology report. For a complete introduction to your pathology report, read this article.
Other helpful resources
Atlas of pathology
Our work is generously supported by:
