Erlenmeyer flask deformity

Case contributed by Ahmed Nasman
Diagnosis certain


Known case of pure red cell aplasia, presented with few days of hypoactivity, pallor and decreased appetite.

Patient Data

Age: 7 years
Gender: Male

Frontal radiographs show diaphyseal constriction and metaphyseal flaring of both femora (Erlenmeyer flask deformity).

There are multiple radiopaque transverse lines noted involving metaphysis of long bones (each femur, tibia and fibula) known as Harris lines or growth arrest lines.


Case Discussion

Erlenmeyer flask deformity and long bones Harris lines as a result of congenital pure RBCs aplasia ( Diamond-Blackfan Anemia ).

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