Evaluation of the clinical usefulness of high-frequency ultrasonography in pre-operative evaluation of cutaneous melanoma - a prospective study.

INTRODUCTION: There are many papers in the available literature on the pre-operative evaluation of malignant melanoma (MM) using a 20 MHz probe. In many Western European countries, this examination is standard in the diagnosis of such lesions in terms of the resection margin. However, few papers describe and compare the results of melanoma thickness measurements using 20 and 50 MHz frequency probes. AIM: The aim of the study was to evaluate the thickness of melanoma using 20 and 50 MHz probes. In addition, the obtained values were evaluated in comparison to the thickness values obtained in the histopathological examination. MATERIAL AND METHODS: Melanoma malignum was confirmed histopathologically in 19 out of 72 patients. Then only those 19 patients were enrolled in the study. RESULTS: A correlation was demonstrated between the thickness of the melanoma measured with the 20 and 50 MHz probes, expressed in mm, and the thickness obtained in the histopathological examination expressed in millimeters (Breslow's scale). It was 0.759 (p < 0.001) and 0.734 (p < 0.001), respectively. The average thickness of melanomas obtained in ultrasound examination was identical for both probes and was 0.74 mm. CONCLUSIONS: It seems that both types of probes can be used to assess melanoma thickness. The demonstrated correlation of high-frequency ultrasonography (HFUS) thickness with Breslow's scale indicates that the HFUS evaluation can be used in determination of melanoma resection margins as a repeatable, painless, non-invasive test.

Solid-pseudopapillary neoplasm of the pancreas - comparisons between magnetic resonance and histological findings.

Solid-pseudopapillary neoplasm is a rare pancreatic tumor typically observed in young adults. A new case of the tumor was diagnosed in a 22-year-old woman. An abnormal mass connected with the pancreatic body was found on ultrasound and computed tomography. Magnetic resonance revealed weak homogeneous contrast enhancement and a low ADC value (0.824 mm/s2; b1000). Primary radiological diagnosis suggested a solid pancreatic neoplasm, which was confirmed during histopathological assessment after resection of the pancreatic body with preservation of the spleen and normal drainage through the main pancreatic duct. Histological appearance of the solid-pseudopapillary neoplasm corresponded with its radiological morphology.

Conversion of epidermal growth factor receptor 2 and hormone receptor expression in breast cancer metastases to the brain.

INTRODUCTION: We investigated the status of estrogen receptor alpha (ERα), progesterone receptor (PR), and epidermal growth factor receptor 2 (HER2) in primary tumor and in the corresponding brain metastases in a consecutive series of breast cancer patients. Additionally, we studied factors potentially influencing conversion and evaluated its association with survival. METHODS: The study group included 120 breast cancer patients. ERα, PR, and HER2 status in primary tumors and in matched brain metastases was determined centrally by immunohistochemistry and/or fluorescence in situ hybridization. RESULTS: Using the Allred score of ≥ 3 as a threshold, conversion of ERα and PR in brain metastases occurred in 29% of cases for both receptors, mostly from positive to negative. Conversion of HER2 occurred in 14% of patients and was more balanced either way. Time to brain relapse and the use of chemotherapy or trastuzumab did not influence conversion, whereas endocrine therapy induced conversion of ERα (P = 0.021) and PR (P = 0.001), mainly towards their loss. Receptor conversion had no significant impact on survival. CONCLUSIONS: Receptor conversion, particularly loss of hormone receptors, is a common event in brain metastases from breast cancer, and endocrine therapy may increase its incidence. Receptor conversion does not significantly affect survival.

Psoriatic erythroderma coexisting with erythema multiforme-like lesions induced by retinoids or retinoids combined with an antibiotic: case report.

Psoriasis is currently considered a multifactorial disease, which can coexist with many somatic and psychological disorders. We present the case of a 50-year-old woman referred to our department due to erythroderma with concomitant peculiar violaceous, polycyclic lesions most likely induced by medications. Past medical history revealed numerous systemic disorders, including metabolic syndrome, hypertension, cardiac insufficiency, obesity, and depression. Additional examinations and consultations demonstrated dyslipidemia, xanthelasma, incomplete block of the right branch of His bundle, thyreocardiac syndrome, benign adrenal tumor, and delusions. Recently, psoriasis has been intensively studied. We present the case in which erythroderma was most likely triggered by acitretin combined with ceftriaxone. Treatment of many diseases and psychiatric disturbances coexisting with psoriasis is extremely difficult and requires cooperation of various specialists.

[Primary testical lymphoma]. / Pierwotny chloniak jadra.

In our report we present a rare case of primary non Hopdgkin lymphoma of the testis in 70-years-old man, who was diagnosed and treated from syderopenic anemia. Here we demonstrate difficulties with differential diagnosis mentioned tumor.

Myeloid-Derived Suppressor Cells Endow Stem-like Qualities to Breast Cancer Cells through IL6/STAT3 and NO/NOTCH Cross-talk Signaling.

Myeloid-derived suppressor cells (MDSC) contribute to immune suppression in cancer, but the mechanisms through which they drive metastatic progression are not fully understood. In this study, we show how MDSC convey stem-like qualities to breast cancer cells that coordinately help enable immune suppression and escape. We found that MDSC promoted tumor formation by enhancing breast cancer cell stem-like properties as well as by suppressing T-cell activation. Mechanistic investigations indicated that these effects relied upon cross-talk between the STAT3 and NOTCH pathways in cancer cells, with MDSC inducing IL6-dependent phosphorylation of STAT3 and activating NOTCH through nitric oxide leading to prolonged STAT3 activation. In clinical specimens of breast cancer, the presence of MDSC correlated with the presence of cancer stem-like cells (CSC) and independently predicted poor survival outcomes. Collectively, our work revealed an immune-associated mechanism that extrinsically confers cancer cell stemness properties and affects patient outcome. We suggest that targeting STAT3-NOTCH cross-talk between MDSC and CSC could offer a unique locus to improve cancer treatment, by coordinately targeting a coupled mechanism that enables cancer stemness and immune escape. Cancer Res; 76(11); 3156-65. ©2016 AACR.