PROBLEM: Endometriosis affects 5-10% of women and is characterized by the growth of endometrial tissue outside of the uterus. Establishing new blood supply is a fundamental requirement for endometriosis lesion growth. Endothelial progenitor cells (EPCs), recruited by stromal cell-derived factor-1 (SDF-1), contribute to neoangiogenesis in endometriotic lesions. We hypothesized that ...

Autosomal-dominant polycystic kidney disease is characterized by progressive cyst formation and fibrosis in the kidneys. Here we describe an orthologous Pkd1nl,nl mouse model, with reduced expression of the normal Pkd1 transcript, on a fixed genetic background of equal parts C57Bl/6 and 129Ola/Hsd mice (B6Ola-Pkd1nl,nl). In these mice, the first cysts ...

STUDY QUESTION: Does the phytochemical compound resveratrol inhibit vascularization of endometriotic lesions? SUMMARY ANSWER: Resveratrol suppresses the development of new microvessels in endometriotic lesions by inhibiting endothelial cell proliferation. WHAT IS KNOWN ALREADY: Establishment and progression of endometriosis is crucially dependent on angiogenesis. Resveratrol is a pleiotropic agent, which dose-dependently ...

The mylohyoid hiatus and hernia were discovered in the nineteenth century and were considered to explain the origin of the plunging ranula from the sublingual gland. This formed the rationale for sublingual sialadenectomy for the treatment of plunging ranula. However, a more recent, extensive histological investigation reported that hernias contained ...

Purpose: Evaluation of the effectiveness of highly focalised thermotherapy (HFT) in a melanoma mouse model, using a ferrimagnetic cement (FC) and repeated low hyperthermia treatments. Materials and methods: A melanoma mouse model was induced with B16F10 cells in C57BL6 mice. The FC, injected into the tumour, was used as the ...

Plexiform neurofibroma is more commonly seen in the orbit, neck, back, and inguinal region. It is extremely rare in the submandibular gland. These lesions rarely transform into malignancy but are locally infiltrative and can lead to haemorrhage. Therefore, plexiform neurofibroma should always be considered during differential diagnosis while excising a ...

Tuo et al. (2012) demonstrated tumor necrosis factor-inducible gene 6 recombinant protein (TSG-6) arrest of focal retinal lesions on a Ccl2 and Cx3cr1 double deficient mouse (DKO) on rd8 background (hereon referred to as DKO rd8). DKO rd8, a model of focal retinal degeneration with earlier onset and higher penetrance ...

Pulmonary lymphangioleiomyomatosis (LAM) is a rare genetic disease characterized by neoplastic growth of atypical smooth muscle-like LAM cells, destruction of lung parenchyma, obstruction of lymphatics, and formation of lung cysts, leading to spontaneous pneumothoraces (lung rupture and collapse) and progressive loss of pulmonary function. The disease is caused by mutational ...

Although rare, malignant melanoma occurs in children. The risk of degeneration of a congenital melanocytic nevus into a melanoma is approximately 0.7%. We report a case of malignant melanoma that developed on a congenital melanocytic nevus in a 19-month-old boy. The child was treated by surgical resection, superficial parotidectomy, and ...

SUMMARY AT A GLANCE: Stayner et al. investigated the effect of rapamycin on polycystic kidney disease in utero. Their data showed the potential beneficial effects of rapamycin administered during pregnancy in a rodent model of PKD, while cyst number remains unchanged; the size of the cysts is reduced by rapamycin ...

To better control tuberculosis (TB) epidemics in developing countries a real need exists to study the liquefaction and cavity formation that occur in pulmonary TB lesions. This report is the first to evaluate the effects of immunomodulators on these two processes in a rabbit skin model. The effects of recombinant ...

Autosomal dominant polycystic kidney disease (ADPKD) is a common inherited disease characterized by massive enlargement of fluid-filled cysts in the kidney. However, there is no effective therapy yet for this disease. To examine whether ginkgolide B, a natural compound, inhibits cyst development, a Madin-Darby canine kidney (MDCK) cyst model, an ...

The biological consequences of clusters containing a single strand break and base lesion(s) remain largely unknown. In the present study we determined the mutagenicities of two- and three-lesion clustered damage sites containing a 1-nucleotide gap (GAP) and 8-oxo-7,8-dihydroguanine(s) (8-oxoG(s)) in Escherichia coli. The mutation frequencies (MFs) of bi-stranded two-lesion clusters ...

The search for molecular markers in the feline mammary gland, namely, the adhesion molecules belonging to the cadherin family, is useful in the understanding of the development of mammary carcinomas in felines and humans. To study P-cadherin expression in the feline mammary gland, 61 samples of normal (n = 4), ...

Three major and three minor types of acral melanocytic lesions have been described: parallel furrow, lattice-like, fibrillar, reticular, homogeneous and globular. To examine the dermoscopic patterns of acral melanocytic lesions and to investigate the association of these patterns with clinical features. This study included 419 acral melanocytic lesions of 295 ...

Barrett's esophagus (BE) is a metaplastic process whereby the normal stratified, squamous esophageal epithelium is replaced by specialized intestinal epithelium. Barrett's is the only accepted precursor lesion for esophageal adenocarcinoma (EAC), a solid tumor that is rapidly increasing in incidence in western countries. BE evolves into EAC through intermediate steps ...

To evaluate different features between benign and malignant pulmonary focal ground-glass opacity (fGGO) on multidetector CT (MDCT). 82 pathologically or clinically confirmed fGGOs were retrospectively analysed with regard to demographic data, lesion size and location, attenuation value and MDCT features including shape, margin, interface, internal characteristics and adjacent structure. Differences ...

It has been hypothesized that white matter lesions at different locations may have different etiology and clinical consequences. Several approaches for the quantification of local white matter lesion load have been proposed in the literature, most of which rely on a distinction between lesions in a periventricular region close to ...

ABSTRACT: The significance of anatomic divisions of the orbital and sinus regions in providing guidance for nasal endoscopic resection of benign space-occupying lesions was discussed. This retrospective study included 177 cases with benign space-occupying lesions of the orbital and sinus resected between 2001 and 2009. Locations of lesions were assigned ...

Little is known of early histologic changes in the mucosa of the colon aside from the polyps in Juvenile Polyposis. Provided with a surgical specimen of a total colectomy of a 6-year-old boy with this condition, this report describes those changes. The mucosa depicted a peculiar serrated profile of the ...

The presence of a Gleason pattern 5 prostatic adenocarcinoma is associated with a worse outcome. This study assesses the accuracy of grading a tumor as having Gleason pattern 5 and the potential factors contributing to its undergrading. From the consultation service of one of the authors, we identified 59 consecutive ...

BACKGROUND: : The first step in the analysis of a dermatoscopically imaged melanocytic lesion is segmentation - informally, isolating those points in the image belonging to the lesion from those belonging to the surrounding non-lesional skin. Although typically studied in the context of automated analysis, segmentation is a necessary step even ...

At present, immunohistochemistry is taken for granted in the establishment of malignant melanoma (MM) diagnosis. In recent years, molecular diagnosis in dermatopathology has benefited from a vast array of advances in the fields of genomics and proteomics. Sensitive techniques are available for detecting specific DNA and RNA sequences by molecular ...

Gerodontology 2011; doi: 10.1111/j.1741-2358.2010.00415.x Palatal schwannoma in an elderly woman Schwannoma also known as neurilemmoma is a benign tumour derived from schwann cells and is relatively rare in occurrence. Only 1% of the schwannomas in the head and neck region occur at intra-oral sites. Schwannomas usually occur during the third ...

A seven-year old California sea lion (Zalophus californianus) presented with focally extensive, bilaterally symmetric, proliferative axillary skin lesions and preputial lesions. A second California sea lion in the same population presented with similar proliferative lesions on the underside of the tail. Histopathology revealed epidermal hyperplasia with severe hyperkeratosis, with proliferating ...

Background: Pineal cysts are benign glial uniloculated or multiloculated fluid-filled sacs located in the pineal gland region. Small pineal cysts are often found incidentally in healthy adults in 1.5-10.8%. Large cysts may cause neurological problems due to pressure exertion on adjacent structures. Methods: We have used prospective, observational study of ...

OBJECTIVES: The positive predictive values (PPV) of the subcategories of BI-RADS(®) 4 lesions (A/B/C) vary widely, and their correlation with specific descriptors has yet to be defined. We aimed to analyze the PPV of the subcategories and of the mammographic and ultrasonographic descriptors assigned to each. MATERIAL AND METHODS: We ...

The base lesion 8-oxoguanine is formed readily by oxidation of DNA, potentially leading to G → T transversion mutations. Despite the apparent similarity of 8-oxoguanine-cytosine base pairs to normal guanine-cytosine base pairs, cellular base excision repair systems effectively recognize the lesion base. Here we apply several techniques to examine a ...

Reasons for performing study: Developmental orthopaedic diseases (DOD) such as osteochondrosis (OC)/osteochondrosis dissecans (OCD), palmar/plantar osteochondral fragments (POF), ununited palmar/plantar eminences (UPE) and dorsoproximal first phalanx fragments are well recognised in the horse. Aetiopathogeneses are controversial and molecular genetic screening of DNA has recently been employed for their elucidation. Precise ...

Cherry angioma is a common, acquired, vascular proliferation, probably of a polygenic mode of inheritance. Segmental manifestation of multiple cherry angiomas associated with the development of non-segmental lesions has not yet been reported. We describe a 62-year-old Caucasian woman with early formation of segmental cherry angiomas after pregnancy, which are ...

Serrated polyps are an inhomogeneous group of lesions that harbour precursors of colorectal cancer. Current research has been directed at further defining the histopathological characteristics of these lesions, but definitive treatment recommendations are unclear. The aim was to review the current literature regarding classification, molecular genetics and natural history of ...

Hamstring injuries are common forms of muscle strains in athletes but a complete rupture of a proximal hamstring origin is rare. Often there is a considerable delay in diagnosis and stringent treatment because of its rarity, difficulty in clinical diagnosis, and initial attempts of conservative care. We report two cases ...

We report the diagnosis and molecular characterization of lobomycosis-like lesions in a captive bottlenose dolphin. The clinical picture and the absence of growth in conventional media resembled the features associated with Lacazia loboi. However sequencing of ribosomal DNA and further phylogenetic analyses showed a novel sequence more related to Paracoccidioides ...

Objective:We report a rare case of fibro-hyaline anterior extensions of the bony nasal pyramid.Method:The clinical, radiological, intra-operative and histological findings are presented.Results:A 34-year-old man presented with bilateral nasal obstruction due to enlarged lateral walls of the nasal vestibule. Radiology showed normal bony structures. Surgery revealed three histologically identical, non-malignant, fibrous ...

Objectives: To investigate the adequacy of visual estimate regarding the percent diameter stenosis (DS) in bifurcation lesions. Background: Quantitative coronary angiography (QCA) is more accurate and precise compared to visual estimate in assessing stenosis severity in single-vessel lesions. Methods: Thirty-six experts in the field of bifurcation PCI visually assessed the ...

Pineal cysts (PCs) are benign and often asymptomatic lesions of the pineal region that are typically small and do not change in size over time. PCs appear as small, well circumscribed, unilocular masses that either reside within or completely replace the pineal gland. This article reviews and discusses the characteristic ...

It is difficult for surgical pathologists to determine the origin of tissues in samples taken from the columnar-lined esophagus (CLE) or stomach by biopsy or endoscopic resection (ER) on the basis of histologic examination alone. We examined histopathologically a single section (5 to 22 mm in size; mean, 12 mm) ...

Endosonography is considered a valuable technique in the evaluation of pancreatic cysts. The aim of the present study is to assess interobserver agreement, in three different observer groups, regarding EUS for characterization of pancreatic cysts. Video sequences of 40 EUS procedures for pancreatic cysts were prepared. Three groups of observers had ...

PURPOSE: Classification of a suspicious mass (region of interest, ROI) in a mammogram as malignant or benign may be achieved using mass shape features. An ensemble system was built for this purpose and tested. METHODS: Multiple contours were generated from a single ROI using various parameter settings of the image ...

Spinal cord injury damaging the rubrospinal tract (RST) interferes with skilled forelimb movement but identification of the precise role of the RST in this behaviour is impeded by the difficulty of surgically isolating the RST from other pathways running within the lateral funiculus (LF). The present study used a skilled ...

OBJECTIVES:: Diffusion-weighted steady-state free precession (DW-SSFP) sequences have shown great potential for the differential diagnosis of benign osteoporotic and malignant neoplastic vertebral compression fractures, which appear hypo- to isointense or hyperintense in DW-SSFP magnetic resonance imaging, respectively. In contrast to other diffusion weighting sequences, the DW-SSFP signal depends not only ...

In recent years, genomic technologies have entered oncology. In particular, so-called tumor signatures are now commercially available for diagnosing breast cancer. These new diagnostic tools have expanded the content and meaning of diagnosis, by adding a distinctive prognostic (will the disease recur?) and predictive (how will the disease react to ...

A 69-year-old woman was awakened with redness and swelling of the left upper eyelid a few days before her presentation. She also noticed a dead spider on her bed. Ophthalmic examination revealed severe left periorbital hyperemia, edema and a wide necrotic area on the upper eyelid. Systemic condition of the ...

PURPOSE: The urinary and gastrointestinal tracts remain an enormous burden to the patient with spinal dysraphism. We examined our cases to determine the relationship between the level and type of spinal dysraphism, presence of a ventricular shunt, and urinary and gastrointestinal tract management. MATERIALS AND METHODS: After receiving ethics approval ...

INTRODUCTION: The OEIS complex refers to a combination of defects consisting in omphalocele, bladder exstrophy, imperforate anus and spinal defects and represents a rare nosologic entity (from 1:200,000 to 1:400,000 pregnancies). The defect probably occurs in early blastogenesis or in mesodermal migration during the primitive streak period. MATERIALS AND METHODS: ...

• To compare the clinical and pathological details of inverted papilloma (IP) of the urinary tract diagnosed in Western Australia with those published. • To determine whether urinary tract IP requires post-treatment cystoscopic follow-up. • Clinical and pathological details were summarized for 41 cases of IP of the urinary tract diagnosed in Western ...

The diagnosis of sessile serrated adenomas (SSAs) is challenging, and there is a great deal of interobserver variability amongst pathologists in differentiating SSAs from hyperplastic polyps (HPPs). The aim of this study was (i) to assess the utility of epigenetic changes such as DNA methylation in differentiating SSAs from HPPs ...

Background: Angioplasty and stenting are preferred treatments for revascularizing femoral artery lesions up to 100 mm, but surgical bypass is recommended for longer lesions. We assessed long-term patency after percutaneous revascularization of long femoral artery lesions for claudication with intensive out-patient surveillance. Methods: We followed a cohort of 111 consecutive ...

Citrin is the hepatic mitochondrial aspartate-glutamate carrier that is encoded by the gene SLC25A13. Citrin deficiency often leads to hyperammonemia, for which the current treatment concept is different from that for primary hyperammonemias. Metabolite level diagnosis, often referred to as chemical diagnosis, is not always successful in identifying citrin deficiency ...

To confirm the risk of chest wall tract metastases following chest wall intervention for malignant pleural mesothelioma (MPM), we reviewed our institutional experience. Between 2006 and 2010, 14 patients with MPM underwent chest wall intervention for diagnosis in Kyoto University Hospital. Seven of them underwent extrapleural pneumonectomy (EPP) after the ...