Paratesticular leiomyosarcoma: A clinical case report.

We present you a Case of 62 year old man with Paratesticular leiomyosarcoma (LMS) localized to the right sctotal half. Detailed pathological and immunohistochemistry characteristic of the tumor was done. For staging was used the classification of French Federation of Cancer Centres Sarcoma Grading System. The final grading of the tumor is grade 3. Paratesticular LMS is rare identity and serves as a diagnostic and treatment challenge.

Classical form of Kaposi sarcoma localized in penis.

We present you a case of 43 year old man with classical form of Kaposi sarcoma (KS) localized to the Penis who was HIV negative. Detailed pathological and immunohistochemistry characteristic of the tumor was done. Pathology reported it as KS with nodular and polypoid form. Classical form of KS with localization in male genitalia is rare identity and serves as a diagnostic challenge.

Quantitative immunohistochemical detection of the molecular expression patterns in proliferative inflammatory atrophy.

The proliferative inflammatory atrophy (PIA) is considered as a possible precursor of prostate intraepithelial neoplasia (PIN) or prostate cancer (PCa). In this study we assessed quantitatively the expression of AMACR, p63, COX-2, GST and iNOS in serial paraffin-embedded tissue sections obtained after radical prostatectomy of PCa patients (n = 30). The applicability of these markers to distinguish PIA, PIN and PCa was evaluated. We also compared the immunohistochemical expression profiles of AMACR, COX-2 and GST in the luminal and basal cells in lesions of PIN arisen in PIA or PIA alone. Two different patterns of COX-2 expression according to the p63 status of the basal cells were found. This observation gives us grounds to hypothesize that the diverse COX-2 patterns resulted from an initial basal cell damage which subsequently propagated to its luminal secretory cells progeny.

Differential expression of ABH histo-blood group antigens and LAMPs in infantile hemangioma.

Although infantile hemangioma (IH) are the most common tumors of infancy, the mechanism of their proliferation and involution remains vague. Proliferation, differentiation and death of endothelial cells are the basic processes involved in their pathobiology. Here we hypothesize that the glycoconjugates ABH histo-blood group antigens (HBGA) and lysosome-associated membrane proteins (LAMPs) might be implied in both the differentiation and death of endothelial cells during vascular remodeling in IH. Proliferating and involuting IH were examined immunohistochemically for HGBA and LAMP expression together with vWF and CD31. Proliferative and apoptotic indices were determined. LAMPs were found in immature endothelium of proliferating IH. In involution an increased number of immunopositive cells stained with higher intensity was detected. The enhanced expression might be associated with augmented autophagy required for tissue remodeling during tumor involution. HBGA presented an opposite pattern of expression--they stained intensely the endothelium of mature capillaries, while the immature ones were positive for vWF. The presence of HBGA in endothelial cells of IH may be related to the differentiation process only, as well as to endothelial adhesion and angiogenesis. Novel evidence for differential expression of HBGA and LAMPs in proliferative and involutive phases of IH is presented.

[Histological analysis of endometrial polyps in breast cancer patients treated with tamoxifen (nolvadex)]. / Khistologichen analiz na endometrialni polipi pri patsientki, lekuvani s tamoxifen (nolvadex) po povod kartsinom na gurdata.

Endometrial polyps are the most common endometrial pathology described in association with Tamoxifen exposure. The aim of this study was to evaluate the malignant potential of endometrial polyps in breast cancer patients receiving Tamoxifen. We analyzed 140 endometrial polyps divided into two groups: 1) 73 endometrial polyps from 57 breast cancer patients receiving Tamoxifen (Nolvadex): T+ endometrial polyps; 2) 67 control endometrial polyps received for analysis in the period January-December 2000. The analysis was performed on archival H&E sections. We found that the rates of endometrial carcinoma and atypical hyperplasia were high in patients treated with Tamoxifen (7.02% vs 2.99% and 17.54% vs 11.94%), but the results did not reach statistical significance (p > 0.05).

[Pathology of the endometrium in breast cancer patients treated with tamoxifen (nolvadex)]. / Patologiia na endometriuma pri lechenie s tamoxifen (nolvadex) po povod kartsinom na mlechnata zhleza.

The objectives of this study were to: 1) characterize histologically endometrial biopsy findings for genital bleeding in breast cancer patients receiving Tamoxifen; 2) analyze histologically endometrial carcinoma in the same patients. We analyzed biopsy specimens divided into three groups: 1) 112 biopsies (curettages and hysterectomy specimens) from 88 breast cancer patients receiving Tamoxifen (Nolvadex): T+; 2) 27 biopsies (curettages and hysterectomy specimens) from 22 breast cancer patients not receiving Tamoxifen but biopsied for genital bleeding: T-; 3) 139 curettages control samples received for analysis in the period January-March 2000 from women with peri- and postmenopausal genital bleeding: K. The analysis was performed on archival H&E sections. The most frequent finding in breast cancer patients receiving Tamoxifen was endometrial polyp. Compared with the other two groups (T- and K) the frequency of this finding was statistically significant. No difference was found in the prevalence of endometrial cancer between the three groups. The analyzed endometrial carcinomas in Tamoxifen-treated breast cancer patients show signs, characteristic of Bochman type I: predominantly endometrioid, of low grade and FIGO stage, with good prognosis.

[Umbilical metastasis - "Sister Joseph's nodule" of an endometrial adenocarcinoma: a case report and review of the literature]. / Umbilikalna metastaza - "Sister Joseph's nodule" pri endometrialen adenokartsinom: predstaviane na sluchai i predgled na literaturata.

The umbilical metastatic lesions have been termed the "Sister Joseph nodule" by Sir Hamilton Bailey in 1949. SJN is an important diagnostic finding, as it often is the first clue and sometimes the only physical indication of an advanced intra-abdominal malignancy. SJN is most often associated with malignancy of the stomach or ovary. It usually appears late in the course of neoplastic disease and suggests a poor prognosis. In our review of English language medical literature we could find only 27 reports of SJN in endometrial adenocarcinoma. We offer a case of SJN, presenting as umbilical hernia, in a female patient, who, 12 years previously, had undergone laparotomy with total hysterectomy and bilateral salpingo-oophorectomy for endometrial adenocarcinoma. Three years after the surgical excision of the umbilical lesion, the patient underwent surgery for a tumor located subcutaneously in the suprapubic area. Histologically, in the samples obtained with both surgical interventions, endometrioid adenocarcinoma with squamous differentiation was found. The clinical examination and imaging studies found no evidence of other metastases. On the basis of clinico-pathological analysis we offer a hypothesis about development of metastases and discuss their prognostic significance.