**Core Concept**
Calcification of soft tissues without any disturbance of calcium metabolism is a phenomenon that occurs due to the deposition of calcium salts within the tissues. This process is usually seen in conditions such as calciphylaxis or calcific tendinitis, where there is a localized accumulation of calcium.

**Why the Correct Answer is Right**
The correct answer is related to the deposition of calcium salts in soft tissues without any systemic disturbance of calcium metabolism. This is often seen in conditions where there is a localized increase in calcium concentration, such as in calcific tendinitis or calciphylaxis. The deposition of calcium salts in these conditions is not related to any disturbance in calcium homeostasis, but rather to a localized process.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not accurately describe the phenomenon of calcification of soft tissues without any disturbance of calcium metabolism.
* **Option B:** This option is incorrect because it refers to a condition where there is a disturbance in calcium metabolism, whereas the correct answer describes a condition where calcium metabolism is normal.
* **Option C:** This option is incorrect because it refers to a condition that is associated with a disturbance in calcium metabolism, such as hyperparathyroidism.

**Clinical Pearl / High-Yield Fact**
It is essential to differentiate between conditions that involve calcification of soft tissues with and without a disturbance in calcium metabolism, as the management and prognosis of these conditions can be quite different.

**Correct Answer:** .