psammoma body

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Introduction

Concentric calcifications seen commonly in:

It is thought that psammoma bodies arise from single necrotic cells calcifying with progressive aquisition of outer layers that create a lamellated configuration.

More general terms

References

  1. Harrison's Online, Chapter 370, McGraw-Hill, 2002
  2. Cotran et al Robbins Pathologic Basis of Disease, 5th ed. W.B. Saunders Co, Philadelphia, PA 1994 pg 31