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Necrotizing enterocolitis
Joseph Junewick, MD FACR
over 10 years ago
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Case History

Newborn with protuberant left gluteal mass.

Case Detail

Anatomy: Musculoskeletal
Joseph Junewick, MD FACR
Diagnostic Category: Developmental or Congenital
Created: over 3 years ago
Updated: over 3 years ago
Tags: PEDS
Modality/Study Types: CR MR
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Case Images

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Reveal Findings

CR – Abdomen radiograph shows an accessory long bone in left pelvis; specimen radiograph confirms rudimentary limb.

MR – Supernumerary limb on the left.

Reveal Discussion

Heterotopic redundancy of the extremities is probably related to mechanical factors (splitting and migration of the limb primordial) but no single exogenous causal factor or genetic link has been identified. Supernumerary limbs are associated with malformations of the neural tube and/or gastrointestinal tract. Leakage of the proteinaceous neural tube fluid may provide an abundant source of totipotential Schwann cells which can dedifferentiate into cartilage, bone, muscles and nerves and eventually an accessory limb.

Reveal Diagnosis

Accessory lower limb

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