Biomedical subjects

A Boukhris

Publications and source records attributed to A Boukhris.

2 recordsLinked to original sources

PubMed2005

[Primary pulmonary angiosarcoma].

Pulmonary angiosarcoma is an uncommon vascular and usually secondary tumor. Only a few primary cases of pulmonary angiosarcoma have been described. We report a case of primary pulmonary angiosarcoma in an adult man who presented with hemoptysis. Chest x-ray film and chest CT showed a right para-cardiac opacity associated with diffuse alveolar consolidation of the right basal lobe. Right inferior lobectomy has been performed. Pulmonary angiosarcoma was diagnosed on histological and immuno-histochemical studies of the operative specimen. The primitive character was retained after ruling out all other tumor localizations. The clinical outcome was rapidly fatal. This observation is added to the other rare cases published of primitive pulmonary angiosarcoma. It confirms the poor prognosis and the extremely hemorrhagic nature of this tumor. Isolated necrotic parenchymatous mass was an original radiological pattern observed in this patient.

Fatal Outcome↗

PubMed1999

Electron density in ammonium dihydrogen phosphate: non-uniqueness of the multipolar model in simple inorganic structures.

X-ray and neutron diffraction data of a single crystal of ammonium dihydrogen phosphate have been used for the determination of the electron density using multipolar expansion of the density around each nucleus. As the ammonium group was found to be nearly neutral from unconstrained multipole refinement, constrained refinements have been performed with the charge of the ammonium group ranging from zero to one. On the other hand, the expansion of the radial functions of the phosphorus atom was varied. All refinements led to almost the same agreement factors and residual densities. The consequences of such uncertainties on the topology of the electron density are discussed, namely the topology of the P-O bond critical point.

Journal Article↗