Prognostic impact of epidermal growth factor receptor on clear cell renal cell carcinoma: Does it change with different expression patterns?

Introduction: The aim of this study was to assess whether epidermal growth factor receptor (EGFR) overexpression was a significant prognostic factor in clear cell renal cell carcinoma (CRCC) and whether its prognostic significance was affected by immunohistochemical expression patterns.

Materials And Methods: Immunohistochemistry was performed on 100 cases of CRCC using an antibody against EGFR. Tumors were grouped by nuclear grade (NG) as low-NG (NG1, 2) or high NG (NG3, 4), and by pathological stage as localized (pT1, 2), or locally invasive (pT3, 4).

Gelsolin, NF-κB, and p53 expression in clear cell renal cell carcinoma: Impact on outcome.

Objectives: To examine the prognostic significance of Gelsolin, NF-κB, and p53 in clear cell renal cell carcinoma (CRCC), which has an unpredictable behavior and tendency for recurrence and metastasis.

Materials And Methods: Immunohistochemistry was performed on 100 consecutive cases of CRCC using antibodies against Gelsolin, NF-κB, and p53. Tumors were grouped by nuclear grade (NG) as low NG (NG1, 2) or high NG (NG3, 4), and by pathological stage as localized (pT1, 2) or locally invasive (pT3, 4).

Acantholytic squamous cell carcinoma of the maxilla: unusual location and aggressive behavior of a rare histologic variant.

Acantholytic squamous cell carcinoma (ASCC) of the mucosal membranes has been documented sporadically. The highly aggressive behavior of a mucosal ASCC arising in the oral cavity has been recently reported. To the best of our knowledge, only 1 autopsy case of maxillary ASCC previously has been reported in the literature.

Primary malignant fibrous histiocytoma of the kidney: report of a case and literature review.

We report a 44-year-old woman with a malignant fibrous histiocytoma (MFH) of the kidney. Primary renal MFH is an extremely rare tumor with a poor prognosis. Renal MFH is differentiated from renal cell carcinoma, renal sarcoma, and sarcomatoid renal tumors only by histological and immunohistochemical studies.

An unusual cause of infantile gynecomastia: sertoli cell tumor.

Prepubertal testicular masses are relatively rare. Sertoli cell tumors account for 2% of prepubertal testicular tumors and very few have occurred in the first decade of life. Gynecomastia can be seen in approximately 5% of patients with testicular mass.

Actinomycosis in the etiology of recurrent tonsillitis and obstructive tonsillar hypertrophy: answer from a histopathologic point of view.

Objective: To investigate the histopathologic profile and clinical presentation of tonsillar disease in the presence of Actinomycetes in children.

Design: A qualitative and quantitative histopathologic analysis of the palatine tonsil was performed.

Setting: Tonsillectomy specimens from patients who underwent tonsillectomy or adenotonsillectomy were searched for Actinomycetes.

Melkersson-Rosenthal syndrome revisited as a misdiagnosed disease.

Purpose: We aimed to attract our college's attention to the Melkersson-Rosenthal syndrome (MRS), which has been an infrequently encountered subject in otolaryngology journals during the last 10 years.

Materials And Methods: A retrospective review of the last 10 years' patient database was performed to find patients with MRS. The medical files, treatment charts, and radiological and histopathological records of these patients were reviewed.

Pathological staging of muscle invasive bladder cancer. Is substaging of pT2 tumors really necessary?

Objective: Compare clinical outcomes in patients having urothelial tumors invading less than one half of the depth of bladder muscle and greater than one half of bladder muscle and, to determine various clinical variables as predictive factors for survival.

Materials And Methods: According to our inclusion criteria, 57 patients among cases with T2 bladder tumor were selected. Thirty-five patients (61.

Clinical importance of intratumoral and normal renal parenchymal inflammatory cell infiltration in renal cell carcinoma.

Objective: To assess the relationship between inflammatory cell infiltration and tumor type, stage and grade, the presence of multifocality and survival in tumors and in tumor-free normal parenchyma.

Material And Methods: A total of 99 patients who underwent radical nephrectomy for renal cell carcinoma (RCC) between 1995 and 2001 and were subsequently followed up were included in the study. Formalin-fixed, paraffin-embedded tissues from the patients were reassessed by a pathologist and inflammation in both tumor and normal renal tissue was scored using a five-point scale.

Adenocarcinoma originating from a mature teratoma of the testis.

Malignant transformation in testicular teratomas has been reported very rarely in the literature. Although testicular teratomas in childhood are regarded as benign neoplasms, these tumors, if left untreated until advanced ages, may present the risk of malignant transformation. We report a case of differentiated adenocarcinoma originating from colonic glands in primary testicular teratoma.

Amyloidosis of the larynx: a case report.

A 75-year-old female patient presented with hoarseness and foreign body sensation in the back of her throat of one-month history. Direct laryngoscopy showed bilateral, yellow, hyperemic masses on the left false vocal fold and laryngeal ventricle. Both true vocal folds were mobile.

Vitiligo associated with malignant melanoma and lupus erythematosus.

There exists several reports where malignant melanoma is associated with vitiligo, vitiligo with discoid lupus erythematosus and lupus erythematosus with urticaria. However, there are no reports in which vitiligo, malignant melanoma, lupus erythematosus and urticaria coexist in the same case. Herein, we report a case of a patient who developed lupus erythematosus, malignant melanoma, vitiligo and urticaria simultaneously.

Microvessel density and regulators of angiogenesis in malignant and nonmalignant prostate tissue.

The aim of this study was to investigate the relationship between microvessel density (MVD), positive and negative angiogenic factors, and established prognostic factors in prostate cancer (PC), and, to clarify the effect of angiogenic factors to angiogenesis. The vascularization of neoplastic, non-neoplastic prostate tissue was determined by CD34 immunostaining. Angiogenetic mediators VEGF, bFGF, TSP-1, and p53 were studied by immunohistochemistry.

Microscopic polyangiitis with unusual lung involvement.

Microscopic polyangiitis (MPA) is a non-granulomatous, systemic and small vessel vasculitis accompanied by segmental necrotizing glomerulonephritis with no evidence of other small vessel disease. We report a patient with weakness, fever, and arthralgia whose CXR and thoracic CT showed widespread nodular infiltration. His proteinase-3 anti-neutrophilic cytoplasmic antibody (c-ANCA) was positive.

Microvessel density as a prognostic marker in bladder carcinoma: correlation with tumor grade, stage and prognosis.

Introduction: The aim of our study was to evaluate tumor angiogenesis as a prognostic marker of transitional cell carcinoma of the bladder and to asses its relationship to established variables for survival and response to therapy.

Patients And Method: Microvessel density (MVD), a measure of tumor angiogenesis, were evaluated in 77 primary bladder cancers. Forty-three superficial carcinomas and 34 invasive carcinomas were analysed.

Renal tubular dysgenesis-a case presentation.

Renal tubular dysgenesis (RTD) is a lethal, developmental anomaly of the fetal kidney characterized by a defect in differentiation of the proximal and distal convoluted tubules. It is usually associated with oligohydramnios in later pregnancy and Potter's syndrome. A neonate with typical features who presented with mild respiratory distress, dysmorphic appearance and anuria is described.

Solitary metastasis of renal cell carcinoma to the parotid gland 10 years after radical nephrectomy.

Renal cell carcinoma metastasis to the parotid gland after tumor nephrectomy is extremely rare. We report a case of solitary parotid metastasis from clear cell renal cell carcinoma in a 59-year-old woman, who presented 10 years after primary treatment. To our knowledge this is the first case in the published literature presenting with solitary parotid metastasis after such a long time.

Prostatic ductal adenocarcinoma showing Bcl-2 expression.

Prostatic ductal adenocarcinoma represents a rare histological variant of prostatic carcinoma with features of a papillary lesion at cystoscopy. There are conflicts regarding the existence, origin, staging, grading, treatment and clinical behavior of this tumor. The aim of the present study is to examine the expression of Bcl-2 and p53 in prostatic ductal adenocarcinoma and to evaluate its origin by analyzing prostate specific antigen, prostate specific acid phosphatase, cytokeratins, epithelial membrane antigen and carcinoembryonic antigen expressions.

Adenoid-basal cell tumor of the prostate gland. A case report: histomorphologic and immunohistochemical features.

Lesions with basaloid features are very rare and controversial within the prostate gland. There seems to be a morphologic continuum ranging from focal basal cell hyperplasia (BCH) to florid adenoid basal cell tumor (ABCT). The clinicopathological features of a basaloid lesion which was associated with an acinar prostatic carcinoma of the prostate gland are described in a 74-year-old man, and discussed under the light of the literature.

Three siblings with steroid-resistant nephrotic syndrome: new NPHS2 mutations in a Turkish family.

Steroid-resistant nephrotic syndromes often are resistant to additional immunosuppressive agents and tend to progress to end-stage renal disease. Genetic studies in children with familial nephrotic syndrome have identified mutations in genes that encode important podocyte proteins. NPHS2 mutations are responsible for autosomal recessive familial focal segmental glomerulosclerosis (FSGS), and these mutations were detected in both familial and sporadic forms of FSGS.

Clear cell adenocarcinoma of the tunica vaginalis of the testis with an adjacent uterus-like tissue.

Testicular and paratesticular neoplasms that resemble the common epithelial type of ovarian tumor are quite rare. Paratesticular clear cell carcinoma is very uncommon in the testis, with no reported cases of a tumor arising from the tunica vaginalis in the literature to our knowledge. The present case shows that it is highly malignant and metastatic.