Acrorenal syndrome

Acrorenal syndrome is a rare congenital malformation syndrome characterized by the combined occurrence of distal limb (acral) anomalies and renal (kidney) defects. The condition is present at birth and affects primarily the skeletal and urinary systems. Limb abnormalities may include split hand/split foot malformations (ectrodactyly), brachydactyly (short fingers or toes), oligodactyly (missing digits), polydactyly (extra digits), or other hand and foot malformations. Renal anomalies can range from renal agenesis (absence of one or both kidneys), renal hypoplasia (underdeveloped kidneys), ectopic kidneys, to other structural kidney malformations. In some cases, additional features such as uterine malformations or other genitourinary anomalies may be present. Acrorenal syndrome is a clinically heterogeneous condition, meaning that the specific combination and severity of features can vary considerably between affected individuals. Several subtypes have been described in the medical literature, including acrorenal-mandibular syndrome and acrorenal-ectodermal-diabetes syndrome (also known as acro-renal-uterine-mandibular syndrome or related entities), though the core features remain the limb-kidney association. The condition has been reported in both sporadic and familial cases, and the genetic basis is not fully elucidated for all forms. There is no specific cure for acrorenal syndrome. Treatment is symptomatic and supportive, tailored to the individual's specific malformations. Orthopedic interventions or reconstructive surgery may be considered for limb anomalies, while renal malformations may require monitoring of kidney function, and in severe cases, dialysis or renal transplantation. A multidisciplinary approach involving nephrologists, orthopedic surgeons, geneticists, and other specialists is recommended for optimal management.

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