Primary angiosarcoma of the breast in a postmenopausal patient.

Primary angiosarcoma of the breast is a rare entity forming 0.04% of primary breast tumors. It is a highly aggressive tumor with a high propensity for locoregional and distant metastasis.

Prognostic significance of molecular markers in oral squamous cell carcinoma: a multivariate analysis.

Background: Multiple marker accumulation impacts tumor progression and biologic phenotypes affect clinical outcome of patients with head and neck cancer. Hence, this study investigated a battery of molecular markers that may help to reflect biologic aggressiveness and predict prognosis.

Methods: Epidermal growth factor receptor (EGFR), Stat3, H-ras, c-myc, p53, cyclin D1, p16, Rb, Ki-67, and Bcl-2 were localized immunohistochemically in 135 oral squamous cell carcinoma patients to assess prognostic value.

Carcinoid of ampulla of Vater.

Carcinoid tumors of ampulla are rare clinical entities. They form 0.35% of all the gastrointestinal carcinoids.