[Ectopic pancreas mimicking advanced gastric malignancy--case report].

Ectopic pancreas is the most common type of ectopic tissue in gastrointestinal tract. It is typically asymptomatic, presenting as a small submucosal lesion in prepyloric region of stomach. The diagnosis is usually incidental, during gastroscopy.

Rhinoscleroma: a case report.

Rhinoscleroma is a chronic inflammatory disease in which granulation tissue with a typical cell content is found. The paper presents the case of a 77-year-old woman with clinically diagnosed nodule in the nasal cavity. The histopathological examination revealed granulation tissue with plasma cells and Mikulicz's cells.

Pathology of breast cancer in women with constitutional CHEK2 mutations.

The power of association studies between polymorphic genetic variants and breast cancer may be enhanced if the cancer subjects are subclassified by histologic subgroup. In this study we classified 482 unselected breast cancers from Szczecin, Poland by histology (ductal, lobular, medullary, other). All women were genotyped for three founder mutations in the CHEK2 gene (1100delC, IVS2 + 1G > A and I157T).

Atypical fibrous histiocytoma and atypical fibroxanthoma: presentation of two cases.

We report two rare examples of dermal fibrohistiocytic stromal tumors: one case of atypical fibrous histiocytoma (AFH) and another one of atypical fibroxanthoma (AFX), which can be confused in surgical pathology diagnosis with high-grade malignant neoplasm. Histologically, a proliferation of mononuclear, spindle-shaped, or histiocytoid cells and/or multinucleated cells, usually admixed with inflammatory cells was observed in both cases, but some clinicopathological differences allowed their distinction. Immunohistochemistry is of a little help in differential diagnosis between these two entities however, it is very useful in differentiating with other groups of tumors.