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Antonio D'Alessio

Publications and source records attributed to Antonio D'Alessio.

2 recordsLinked to original sources

Presacral cystic neuroblastoma: case report and review of the literature.

Cystic neuroblastoma (CN) is highly unusual; since 2005 only 55 cases have been reported in the medical literature. The authors report a case of pelvic (presacral) CN in a 2-month-old boy. Computed tomography scan confirmed a cystic, septated, and encapsulated mass. Complete tumor excision was achieved. Histopathology diagnosed a stroma-poor and undifferentiated neuroblastoma with multiple calcifications. meta-iodobenzylguanidine scan, radionuclide bone, and a bone marrow aspiration were normal. N-myc amplification was absent. The infant was classified stage I neuroblastoma and received no further therapy (4 y of follow-up). To the authors' knowledge, this is the first report of a CN in a pelvic-presacral location.

Diagnosis, Differential↗

Modeling aerosol formation in opposed-flow diffusion flames.

The microstructures of atmospheric pressure, counter-flow, sooting, flat, laminar ethylene diffusion flames have been studied numerically by using a new kinetic model developed for hydrocarbon oxidation and pyrolysis. Modeling results are in reasonable agreement with experimental data in terms of concentration profiles of stable species and gas-phase aromatic compounds. Modeling results are used to analyze the controlling steps of aromatic formation and soot growth in counter-flow configurations. The formation of high molecular mass aromatics in diffusion controlled conditions is restricted to a narrow area close to the flame front where these species reach a molecular weight of about 1000 u. Depending on the flame configuration, soot formation is controlled by the coagulation of nanoparticles or by the addition of PAH to soot nuclei.

Aerosols↗