Congenital calcinosis cutis of the foot

G K Tharini1, D Prabavathy, S J Daniel

  • 1Department of Dermatology, Madras Medical College, Chennai, India. gtrajang@gmail.com

Insights

Subepidermal calcified nodule is a rare idiopathic skin condition. This case report details a newborn with a congenital nodule, confirmed as subepidermal calcified nodule via histopathology after surgical excision.

Area of Science:

  • Dermatology
  • Pathology
  • Pediatrics

Background:

  • Calcinosis cutis involves insoluble calcium salt deposition in the skin.
  • Subepidermal calcified nodule (SCN) is an idiopathic form of calcinosis cutis.
  • SCN typically affects children, with congenital presentation being rare.

Purpose of the Study:

  • To describe a rare case of congenital subepidermal calcified nodule.
  • To highlight the diagnostic confirmation through histopathology following surgical excision.

Main Methods:

  • Clinical presentation of a solitary, hard nodule on the left foot since birth.
  • Surgical excision of the affected nodule.
  • Histopathological examination of the excised tissue.

Main Results:

  • A healthy 10-month-old boy presented with a congenital nodule.
  • Histopathology confirmed the nodule as a subepidermal calcified nodule.

Conclusions:

  • Subepidermal calcified nodule can present congenitally, though rarely.
  • Surgical excision and histopathology are crucial for diagnosis and management.

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