Which of the following is a characteristic feature of CREST syndrome?

• A. Polyarthritis
• B. Calcinosis cutis
• C. Partial seizures
• D. Short stature

Answer: (B)

Calcinosis cutis is indeed a characteristic feature of CREST syndrome, which is a limited form of systemic sclerosis (scleroderma). This condition is characterized specifically by the presence of five key features, which include calcinosis, Raynaud's phenomenon, esophageal dysmotility, sclerodactyly, and telangiectasias. Calcinosis refers to the deposition of calcium in the skin and subcutaneous tissues, leading to the formation of painful, firm nodules or plaques. This symptom is particularly associated with CREST syndrome, as it reflects the underlying collagen deposition and skin changes seen in this condition.

The other features listed, such as polyarthritis, partial seizures, and short stature, are not typically associated with CREST syndrome. Polyarthritis can occur in various autoimmune conditions but is not a defining feature of CREST. Similarly, partial seizures are related to neurological disorders, and short stature is generally not linked with the syndrome. Thus, calcinosis cutis stands out as a primary and defining aspect of CREST syndrome.