Abstract
Calcinosis cutis is the deposit of insoluble calcium salts in the skin. It is classified according to its pathogenesis in dystrophic, metastatic, idiopathic, iatrogenic, and calciphylaxis. Idiopathic calcinosis is asymptomatic, occurs in healthy patients, and includes scrotal calcinosis, Winer's nodular calcinosis or subepidermal calcified nodules, and familial tumor calcinosis. The latter is a rare condition characterized by periarticular calcium deposition in normocalcemic patients with no bone connection. The case of a 5-month-old male patient, who on the seventh day of life was hospitalized for multifactorial jaundice, late neonatal sepsis, and apnea with epileptic seizures is described. His evolution was torpid, with hospital admissions due to epileptic seizures that were difficult to manage with partial response to the use of diphenylhydantoin and electrolyte alterations. By means of exome sequencing directed, a pathogenic variant of wrong direction in FGF12 was detected and the diagnosis of early epileptic encephalopathy number 47 was confirmed. Also, the patient showed disseminated congenital dermatosis to lower extremities affecting thighs, asymptomatic, bilateral and symmetrical, constituted by hypopigmentation and fovea hard to deep palpation. The biopsy showed dystrophic calcification. The case of an infant with deep congenital cutis calcinosis associated with a pathogenic variant in the FGF12 gene with epileptic encephalopathy is described. To date, this clinical situation has not been previously reported in the literature.
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