The signature of fusion between the embryological derivatives of the first and second branchial arches within the ossicular chain in MDCT

Conclusions: The presence of the junctional zones between embryological derivatives of the first and second branchial arches within the ossicular chain at MDCT basis could support the dual arch interpretation at least in most of humans. Whatever the classical or dual arch interpretations or both are correct, the signature of such fusion between embryological derivatives of the first and second branchial arches within the ossicular chain, should be considered as normal variant and should not be mistaken with ossicular erosions, fractures or dislocations.
Source: The Egyptian Journal of Radiology and Nuclear Medicine - Category: Nuclear Medicine Source Type: research