Abstract:
:The aim of this prospective study is to establish the frequency and the type (neoplastic and nonneoplastic) lesions defined endoscopically as flat elevated lesion (FEL) in the colon and rectum, as well as to compare flat adenomas (FAs) to polypoid lesions of the same size with morphometric and immunohistochemical analysis. One hundred nineteen patients were studied through fibrocolonoscopy with chromoscopy (indigo carmine spray). All detected lesions (total of 195) were removed, and FELs measuring 10 mm or smaller were also selected. Using histopathologic criteria, they were divided in neoplastic (adenomas and carcinomas) and nonneoplastic ones. In neoplastic lesions, the following parameters were evaluated to compare FAs with polypoid lesions: morphometric studies with Index of Structural Atypia (ISA) and Stratification Index (SI), evaluation of cellular proliferation with label index of Ki-67, and expression of p53 protein. Of 195 lesions resected, only 33 (17%) met the endoscopic requirements for FELs. Twelve (36.4%) were neoplastic and 21 (63.6%) considered nonneoplastic. Among the FAs, there were a percentage of high-grade (severe dysplasia) significantly more frequent than observed in polypoid lesions (16.7% vs 2.6%). In addition, the SI, Ki-67 label index and p53 positivity were significantly higher in FAs. The ISA also reached significant differences between both groups of adenomas. Non-neoplastic FELs included different entities such as hyperplasic polyps, focuses of colitis, normal mucosa, and scars. The endoscopic elements analyzed were shared between nonneoplastic FELs and FAs. A central depression, when air was properly insufflated, considered typical in neoplastic lesions, was frequently observed in nonneoplastic lesions. Following the endoscopic criteria of FELs, nonneoplastic lesions predominated over the adenomatous lesions, demonstrating that FELs and FAs are not homologous terms. The frequency of high-grade dysplasia was significantly more elevated in the adenomatous FELs than in polypoid adenomas. The ISA, SI, p53 expression, and Ki-67 label index were helpful in differentiating adenomatous FELs from polypoid lesions. Flat elevated lesions selected by endoscopic criteria are, in fact, a heterogeneous population of lesions.
journal_name
Ann Diagn Patholjournal_title
Annals of diagnostic pathologyauthors
Gualco G,Reissenweber N,Cliché I,Bacchi CEdoi
10.1016/j.anndiagpath.2006.03.003subject
Has Abstractpub_date
2006-12-01 00:00:00pages
333-8issue
6eissn
1092-9134issn
1532-8198pii
S1092-9134(06)00030-Xjournal_volume
10pub_type
杂志文章abstract::Cases of cerebral neuroblastoma or supratentorial primitive neuroectodermal tumor with malignant gliomatous components are relatively uncommon. Less frequent is the combination of these 2 elements with a mesenchymal component. This is a case report of a lipomatous supratentorial primitive neuroectodermal tumor with gl...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2007.04.009
更新日期:2009-02-01 00:00:00
abstract::A clear cell variant of solid-pseudopapillary tumor (SPT) of the pancreas was initially reported in 2006 as a tumor that arose in the pancreatic body and tail in young adults; to date, only 4 cases of this entity have been reported. Here, we present the case of a 58-year-old man with clear cell variant of SPT with dis...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2010.11.011
更新日期:2012-04-01 00:00:00
abstract::We report the case of a rare cardiac lesion, mesothelial/monocytic incidental cardiac excrescences, and also provide a review of the literature. Diagnosis of this entity was based on both its unique morphologic features and imunohistochemical stains. Cytokeratin positivity confirmed the epithelial component, mesotheli...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章,评审
doi:10.1016/s1092-9134(00)90009-1
更新日期:2000-02-01 00:00:00
abstract::We report a case of recurrent body cavity-based non-Hodgkin's lymphoma in a patient with advanced acquired immunodeficiency syndrome who presented with bilateral pleural effusions, without evidence of an associated tumor mass. The lymphoma cells were large and pleomorphic, lacking pan-T- and pan-B-cell markers, but ex...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/s1092-9134(98)80050-6
更新日期:1998-04-01 00:00:00
abstract::Papillary renal cell carcinoma (PRCC) is currently a well-studied type of RCC. In addition to PRCC type 1, there are a number of other subtypes and variants of PRCCs which have been reported. We describe a series of 6 PRCCs with papillary, micropapillary and/or tubulopapillary architecture and prominent spindle cell s...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2019.151441
更新日期:2020-02-01 00:00:00
abstract::Epithelial carcinogenesis is a multistep process. Specific genetic events lead to malignant transformation of oral epithelium. Oral squamous cell carcinoma (OSCC) may be preceded by potentially malignant lesions such as oral lichen planus (OLP). The p16 protein functions as a negative regulator of the cell cycle progr...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2014.03.009
更新日期:2014-08-01 00:00:00
abstract::The purpose of the study is to assess whether a protocol for submitting clinically suspected endometrial polyps will improve the detection rate of polyps and evaluation of the background endometrium. A retrospective review from 1999 to 2015 was performed. Cases were divided into (1) polyps and curettings placed in 2 c...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2016.05.002
更新日期:2016-08-01 00:00:00
abstract::Mucoceles can occur in the oral cavity, appendix, bladder, paranasal sinuses, and lacrimal sac. In the oral cavity, mucoceles arise from pathological alterations in the minor salivary gland ducts. In this study, we aimed to histologically reevaluate cases of oral mucoceles to identify possible variants. A total of 667...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2016.02.001
更新日期:2016-04-01 00:00:00
abstract::Hepatocellular carcinoma (HCC) is the second most common primary malignant hepatic tumor in children. It often develops in patients with underlying liver disease. We report the clinicopathologic features of an unusual HCC occurring in an infant who presented with features of Cushing's syndrome due to bilateral adrenal...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2005.12.005
更新日期:2007-02-01 00:00:00
abstract::According to colleagues specializing in genitourinary pathology, the so-called postoperative spindle cell nodule of the bladder can be extremely difficult to distinguish from a spindle cell sarcomatoid carcinoma. What I have learned in 25 years about spindle cell sarcomatoid carcinoma of the larynx may, by analogy, po...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章,评审
doi:10.1053/j.anndiagpath.2004.01.009
更新日期:2004-04-01 00:00:00
abstract::Four soft tissue tumors corresponding with the previously reported parachordoma are described. Three of the patients were men, and one was a woman, and their ages ranged from 14 to 53 years (mean age, 29). The tumors were located either superficially or within muscle, and, in one case, involved a tendon. Histologicall...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/s1092-9134(97)80003-2
更新日期:1997-10-01 00:00:00
abstract::A few cases of uterine angiosarcoma have been detailed in the literature: 2 new cases are herein described featuring some unusual clinical or phenotypic differences compared with previously published cases, such as occurrence in premenopausal age or a poorly differentiated histology. The patients were 35 and 81 years ...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2007.08.001
更新日期:2008-06-01 00:00:00
abstract::Although the lumen of the urinary bladder is covered with only urothelial epithelium, malign glandular lesions (eg, nonurachal adenocarcinoma) and benign lesions (eg, cystitis cystica and cystitis glandularis) can also rarely occur in this site due to its characteristic embryologic development. Glandular differentiati...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2011.06.003
更新日期:2011-12-01 00:00:00
abstract::Acquired cystic disease (ACD)-associated renal cell carcinoma (RCC) is a recently described entity. To the best of our knowledge, there are no reports of ACD-associated RCC with sarcomatoid and rhabdoid changes. In this article, we present the first case of such a tumor. A 56-year-old Japanese man has received long-te...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2010.07.008
更新日期:2011-12-01 00:00:00
abstract::Recurrences of nonmuscle-invasive urothelial bladder cancer are very common following resection. Predictive histopathologic variables in transurethral resection of bladder tumor (TURBT) specimens are of particular importance especially in determining the behavior of lamina propria-invasive tumors (high grade T1 stage)...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2013.11.002
更新日期:2014-04-01 00:00:00
abstract::We report a unique case of an extramammary mammary-type myofibroblastoma of the perianal region. The patient was a 40-year old female with no significant past history, who presented with a right side painless perianal mass. Gross examination of the excised mass showed a well-circumscribed, apparently encapsulated, nod...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2009.08.005
更新日期:2010-10-01 00:00:00
abstract:BACKGROUND AND AIMS:Programmed death ligand 1 (PD-L1), an immune check point inhibitor, is known to be expressed in several malignancies and is being considered as a prognostic factor and a potential immunotherapeutic target. The aim of this study was to characterize PD-L1 expression in thymomas and to determine correl...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2018.03.012
更新日期:2018-06-01 00:00:00
abstract:BACKGROUND:Epithelioid angiomyolipoma (EAML) is a rare potentially malignant variant of renal angiomyolipoma (RAML). This study aims to determine whether RAML clinico-pathologic and molecular features (i.e. p53 gene abnormalities) differ significantly with regards to its histologic variant or to the presence of an epit...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2020.151538
更新日期:2020-08-01 00:00:00
abstract::An important amount of data correlating the expression of epithelial cell adhesion molecule (Ep-CAM) with cellular proliferation and de-differentiation could directly contribute to carcinogenesis. The aim of this study is to evaluate prognosis relevance of Ep-CAM expression in a group of pituitary adenomas. Epithelial...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2010.06.008
更新日期:2010-12-01 00:00:00
abstract::Twenty-four years after apparently successful treatment for nodular lymphocyte predominant Hodgkin's disease (nLPHD), a 41-year old male developed "B" symptoms and extensive adenopathy. A right axillary lymph node biopsy showed two distinct regions including (1) histiocyte-rich B-cell lymphoma and (2) diffuse small T-...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章,评审
doi:10.1016/s1092-9134(99)80006-9
更新日期:1999-02-01 00:00:00
abstract::Spindle cell tumors of the prostate are rare and mostly primary. We report a case of retroperitoneal sarcoma, which is a low-grade fibromyxoid sarcoma involving the prostate secondarily by metastasis. The patient was a 44-year-old man who presented with progressing abdominal pain. Computed tomography showed a large re...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2010.01.001
更新日期:2011-02-01 00:00:00
abstract:INTRODUCTION:Hydatid disease is an endemic parasitic infection caused by Echinococcus granulosus mostly seen in the Mediterranean countries. The most affected organ is the liver, however hydatidosis can be found anywhere in the human body. METHODS:The records of patients who were diagnosed with hydatid disease in our ...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2017.01.011
更新日期:2017-08-01 00:00:00
abstract::Clear cell papillary renal cell carcinoma (ccpRCC) is a recently recognized subtype of renal cell carcinoma. In this study, we investigated the clinicopathological and immunohistochemical features in a group of 26 cases of ccpRCC, with a special emphasis on the expression of vitamin D receptor (VDR). The mean age of p...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2018.06.007
更新日期:2018-10-01 00:00:00
abstract::Parotid masses remain challenging secondary to the great diversity of primary tumors that may arise in the salivary glands and propensity for regional and even distant metastases to occur in this region. Meningioma must also be considered in the differential diagnosis of parotid masses, whether from direct extension, ...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2011.08.006
更新日期:2012-04-01 00:00:00
abstract::The appearance of a sarcoma of bone is a well-recognized complication of Paget's disease. The most common type of such a sarcoma is osteosarcoma. Much less common are soft tissue lesions adjoining the pagetic bone that clinically and radiologically simulate sarcoma but histologically represent exaggerated periosteal b...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/s1092-9134(99)80037-9
更新日期:1999-04-01 00:00:00
abstract::Fibro-osseous pseudotumors of the digits (FOPD) is a rare self-limiting lesion composed of bland looking hypercellular fibrous tissue and bone. USP6 rearrangement is a consistent genetic finding in aneurysmal bone cyst, nodular fasciitis, myositis ossificans and giant cell lesions of small bones. We report herein the ...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2018.05.003
更新日期:2018-08-01 00:00:00
abstract::DOG1 is a highly-sensitive marker often included in the immunohistochemical panel for the diagnosis of gastrointestinal stromal tumors (GISTs). Recent research has shown that DOG1 may also be expressed by low-grade fibromyxoid sarcomas (LGFMSs); this may give rise to diagnostic error when the sarcoma is located in the...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章,评审
doi:10.1016/j.anndiagpath.2017.05.002
更新日期:2017-10-01 00:00:00
abstract::Carcinoid of the gall bladder and bile duct is a rare tumor. Primary gall bladder and biliary duct system carcinoids constitute less than 1% of all carcinoid tumors arising from different parts of the body. We describe a case of carcinoid tumor of the gall bladder in a 53-year-old woman. The rarity of this entity prom...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2005.12.003
更新日期:2007-04-01 00:00:00
abstract::A 73-year-old woman presented with abdominal pain, weakness, and weight loss. Pertinent medical history included myelofibrosis, severe anemia, and lumpectomy for breast cancer. Computed tomography showed marked splenomegaly and numerous soft tissue masses in the mesentery. Excisional biopsy of the mass showed an encap...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1053/adpa.2002.34574
更新日期:2002-06-01 00:00:00
abstract::Cutaneous angiosarcoma is an aggressive malignant mesenchymal vasoformative neoplasm that accounts for 1% of all soft tissue sarcomas. Using data from the National Cancer Institute's Surveillance, Epidemiology, and End Results program, we analyzed the demographics and survival of cutaneous angiosarcoma. The Surveillan...
journal_title:Annals of diagnostic pathology
pub_type: 杂志文章
doi:10.1016/j.anndiagpath.2010.07.012
更新日期:2011-04-01 00:00:00