First-Order Rhombohedral-to-Cubic Phase Transition in Photoexcited GeTe.

Photoexcited GeTe undergoes a nonthermal phase transition from a rhombohedral to a rocksalt crystalline phase. The microscopic mechanism and the nature of the transition are unclear. By using constrained density functional perturbation theory and by accounting for quantum anharmonicity within the stochastic self-consistent harmonic approximation, we show that the nonthermal phase transition is strongly first order and does not involve phonon softening, at odds with the thermal one.

Genomic analysis: toward a new approach in breast cancer management.

Breast cancer is a clinically heterogeneous and complex disease that can affect differently individuals with seemingly identical clinicopathologic parameters. This heterogeneity is strictly linked to individuals and tumors genetic variability. Currently, the development of high-throughput technologies are proving novel tools to tackle this complexity.

Giant recurrent fibromatosis of the breast: a case report. Clinical features and implications for treatment.

Fibromatosis of the breast is a benign but locally aggressive neoplasm, which has been described under various names including extra-abdominal desmoid tumour and aggressive fibromatosis. It is a rare condition, accounting for approximately 0.2% of all solid tumours of the breast.

[Stromal tumors of the small intestine: personal experience and review of the literature].

Malignant gastointestinal stromal tumors (M-GIST) are rare mesenchymal tumors that arise in the wall of the gastrointestinal (GI) tract. Small intestinal GIST account for approximately 35% of all GIST the diagnosis of these tumors is difficult to establish, because the symptoms are vague and non-specific and traditional endoscopy is commonly unsatisfactory. Because of the infrequent nature of malignant small bowel tumors, the natural history and factors affecting outcome remain poorly defined; stage at presentation and complete surgical resection seem to be the main prognostic factors.

[Bleeding gastric lymphoma: report of two cases].

We report two cases of bleeding gastric lymphoma. The stomach is the most common site of primary extranodal Non-Hodgkins Lymphomas. The best treatment for primary gastric lymphoma has not yet been defined.