Identifying cancer molecular patterns with high accuracy from high-dimensional proteomic pro les presents a challenge for statistical learning and oncology research. In this study, we develop a nonnegative principal component analysis and propose a nonnegative principal component analysis based support vector machine with a sparse coding to conduct e ective feature selection and high-performanc...

Collision tumors are rare neoplasms defined by the presence of two distant in same organ without any histological intermixing. Each component collision tumor occur coincidently and no connection is found between tumors. Our case a ovary composed mature cystic teratoma Mucinous cystadenoma.

basaloid squamous cell carcinoma of the esophagus are rare [1–4], while esophageal combined carcinoma is very rare [5]. Most cases of combined carcinoma of the esophagus consist of squamous cell carcinoma, adenocarcinoma, and small cell carcinoma [5]. This is the first report of combined adenoid cystic carcinoma, basaloid squamous cell carcinoma, and squamous cell carcinoma of the esophagus. A ...

Malignant ectomesenchymoma is a rare tumor that contains both ectodermal and mesenchymal elements. So far, only 7 patients with a manifestation in the cerebrum (with confirmed clinicopathological data) have been reported. A 4-year-old girl was present at our hospital with a 3-week history of intermittent sudden dizzy with no apparent cause. MRI showed an irregular enhanced lesion in the left fr...

The study includes 16 cases of Warthin's tumor in a period of 4 years (2004-2008). The tumors were diagnosed at patients of VII decade, most of them smoker. The studies of Warthin's tumor macroscopic morphological parameters allow us to establish the localization exclusive at parotid glands like solitary tumor and the tumoral volume oscillate mostly between 2-4 cm in diameter. Histopathological...

angiogenesis which is the recruitment of new blood vessels is a critical process in several chronic diseases and is an essential component of tumor or cancer progression. development of therapies aimed at inhibiting the angiogenesis, in combination with classical anti-cancer therapies, is among the most intensively studied approaches to treat the cancer. in this study the effect of chlordiazepo...

The ability of glutaraldehyde-treated tumor cells to induce protection against subsequent challenge has been studied in a syngeneic system. Two tumors have been tested in BALB/c mice. The first was a methylcholanthreneinduced tumor that has been maintained in serial passage for over a decade. The second was a spontaneous mammary adenoacanthoma that was tested at the third passage. The protectio...

This report presents a dedifferentiated chondrosarcoma with a unique pathologic feature. A 63-year-old man was referred with pain and a soft tissue mass in the left groin. A plain radiograph showed a mineralization in the proximal femur with partially osteolytic foci and an abnormal shadow in the soft tissue. Magnetic resonance imaging scans showed an inhomogeneous lesion with intermediate to p...

Background: Sarcomatoid carcinoma of the esophagus is an unusual malignancy with a biphasic histological appearance containing both epithelial and mesenchymal elements. The most common epithelial component is squamous cell carcinoma; the spindle cell component is typically high grade. These tumors usually present as large pedunculated masses with intraluminal growth but show minimal invasion. A...

A collision tumor of T and B-cell lymphomas occur rarely. In this article we report a collision tumor of anaplastic large cell lymphoma and diffuse large B cell lymphoma in a 46 years old female. The tumor showed predominantly neoplasmtic anaplastic large cell lymphoma (ALCL) component expressing CD30 and ALK with smaller areas of CD20+ diffuse large B cell lymphoma component. Polymerase chain ...