[Expression of carbonic anhydrase IX in the breast carcinomas]. / Expresia karbonickej anhydrázy IX v karcinómoch prsníka.

OBJECTIVE: Carbonic anhydrase IX (CA IX) is one indicator of hypoxia in the tumor and its expression is associated with more aggressive forms of breast cancer. The aim of this study is to point out its own set of correlation between CA IX expression and selected morphological and biological indicators. TYPE OF STUDY: Cohort prospective study. SETTING: Department of Pathology of Slovak Medical University and St. Elisabeth Cancer Institute, Bratislava, Slovak Republic. METHODS: These were 145 cases of breast cancer aged 25 to 85 years (median 59 years) from the Register of the Institute of Pathology and Slovak Medical University and St. Elisabeth Cancer Institute in Bratislava for the period 1. 9. 2012 to 28. 2. 2013. In all cases were examined CA IX, estrogen receptor (ER), progesterone receptor (PR), HER2, p53 and Ki67 by immunohistochemistry. Typing, grading and staging of the disease were evaluated according to the classification systems currently in place. RESULTS: CA IX expression was demonstrated in 51 cases (35.2%). CA IX positivity correlated with the degree of differentiation (p = 0.0001), with ER status (p <0.0001) and PR (p <0.01) and HER2 (p <0.01) and proliferative activity as measured by Ki67 (p <0.001). HER2-positive cancers and triple-negative cancers were more frequently associated with the expression of CA IX compared with luminal subtypes (p <0.0001). The state of CA IX and age range of the tumor - pT and lymph node status - pN and p53 have not been shown statistically significant correlations. CONCLUSION: CA IX examination in breast cancer provides valuable information on the state of hypoxia in the tumor, thereby supplementing view of prognosis of the disease.

[Malignant melanoma of soft parts (clear cell sarcoma)--a rare case of multiorgan localization]. / Malígny melanóm mäkkých castí (svetlobunkový sarkóm)--raritný prípad viacorgánovej lokalizácie.

Malignant melanoma of soft parts (MMSP) is a rare tumor originally described by Enzinger in 1965 as clear cell sarcoma of tendons and aponeuroses because of its affinity to tenosynovial structures. Tumors are found predominantly at the extremities. First visceral case was described in 1993 in the duodenum. We describe the case of 64-years old man with malignant melanoma of soft parts in the stomach, in the pancreas, in the mesocolon, in the left thigh and in the left axilla. This patient was successfully treated surgically by the resection of the stomach, resection of the pancreatic head, extirpation of the tumor from mesocolon, from the left thigh and from the left axilla. In all these localisations the tumor was histologically and imunohistochemically proved to be MMSP (positivity: s-100 protein, vimentin, HMB-45 and negativity CK, EMA, desmin, actin). This multivisceral occurrence is extremely rare and according to the review of literature this is probably the first published case of MMSP in the stomach and in the pancreas.