A review of soft tissue calcifications

Area of Science:

• Pathology
• Biochemistry

Background:

• Soft tissue deposition of calcium and phosphorous salts presents in three main forms: metastatic calcification, dystrophic calcification, and calcinosis.
• Understanding these classifications is crucial for diagnosing and managing a spectrum of associated systemic and localized diseases.

Purpose of the Study:

• To delineate the distinct categories of soft tissue calcification.
• To associate each calcification type with its underlying pathophysiology and related medical conditions.

Main Methods:

• Review of existing literature on soft tissue calcification.
• Categorization based on etiological factors (metabolic derangements vs. tissue damage) and affected tissue types.

Main Results:

• Metastatic calcification results from elevated calcium-phosphorous levels in normal tissues, linked to hyperparathyroidism, neoplasms, and hypervitaminosis D.
• Dystrophic calcification occurs in damaged tissues with normal metabolism, associated with Ehlers-Danlos syndrome, arteriosclerosis, and neurological disorders.
• Calcinosis, often in subcutaneous tissues, occurs with normal metabolism and is linked to autoimmune diseases like scleroderma and lupus erythematosus.

Conclusions:

• Soft tissue calcification is a multifaceted phenomenon with distinct etiological pathways.
• Accurate classification aids in identifying underlying systemic diseases and guiding therapeutic strategies.