Vara Deformity and Subluxed Humeral Heads: An Unusual Sign in Pseudohypoparathyroidism

TL;DR

This case report describes a rare bone abnormality in a child with pseudohypoparathyroidism, adding to the known radiographic signs of the condition.

Contribution

The paper presents a new radiographic manifestation of pseudohypoparathyroidism involving vara deformity and subluxed humeral heads.

Findings

The patient showed subchondral resorption of clavicular heads and ribs.

Band lucencies were observed in the proximal humeral metaphyses.

Vaa deformity and inferior subluxation of the humeral heads were identified.

Abstract

Pseudohypoparathyroidism is a rare disorder characterized by end-organ resistance to intact parathyroid hormone (PTH) and concomitant laboratory findings of hypocalcemia and hyperphosphatemia. Radiologic evidence of the disease may manifest as a variety of bone abnormalities. This case describes an 11-year-old female with a history of repaired bilateral slipped capital femoral epiphysis who presented with a limited range of motion of the bilateral upper extremities. Laboratory findings were consistent with pseudohypoparathyroidism. Radiographs revealed subchondral resorption of bilateral clavicular heads and multiple ribs and band lucencies of proximal humeral metaphyses, along with vara deformity and inferior subluxation of the humeral heads. This presentation adds to the spectrum of potential radiographic manifestations of pseudohypoparathyroidism.

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