Soft Tissue Calcifications and Ossifications

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Questions and Answers

What is the primary mechanism of formation for dystrophic and iatrogenic calcifications?

  • Deposition of calcium in normal tissue despite normal serum calcium and phosphate levels
  • Generalized calcifications in normal tissue
  • Deposition of calcium salts primarily in the skeleton
  • Occur in damaged or degenerated tissue (correct)

What causes metastatic (metabolic) calcifications?

  • Deposition of calcium salts resulting from a systemic metabolic disorder (correct)
  • Occur in damaged or degenerated tissue
  • Deposition of calcium in normal tissue despite normal serum calcium and phosphate levels
  • Deposition of calcium salts primarily in the skeleton

What is heterotopic calcification?

  • Unorganized deposition of calcium salts in soft tissue (correct)
  • Generalized calcifications in normal tissue
  • Deposition of calcium in normal tissue despite normal serum calcium and phosphate levels
  • Deposition of calcium salts primarily in the skeleton

How are idiopathic calcifications classified?

<p>Deposition of calcium in normal tissue despite normal serum calcium and phosphate levels (B)</p> Signup and view all the answers

What are the clinical features associated with heterotopic calcification or ossification?

<p>May not produce signs or symptoms; most often detected as incidental findings during imaging examinations made for other purposes (B)</p> Signup and view all the answers

What is the primary composition of the calcium salts deposited in soft tissue calcifications?

<p>Calcium phosphate (B)</p> Signup and view all the answers

What percentage of soft-tissue calcifications are accounted for by dystrophic and iatrogenic calcifications?

<p>95–98% (B)</p> Signup and view all the answers

What does metastatic (metabolic) calcifications refer to?

<p>Generalized calcifications in normal tissue due to systemic metabolic disorder (A)</p> Signup and view all the answers

What is the range of calcium-phosphate product that leads to metastatic (metabolic) calcifications?

<p>60–70 (D)</p> Signup and view all the answers

What is the term used for the unorganized deposition of calcium salts in soft tissue?

<p>Heterotopic calcification (D)</p> Signup and view all the answers

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