Abstract:
BACKGROUND:Advancing knowledge in molecular pathogenesis of hepatocellular carcinoma (HCC) opens up new horizons in the diagnostic, prognostic and therapeutic perspectives. Assessing the expression of molecular targets prior to definitive treatment is gaining importance in clinical practice. In this study, we investigated the variation in expression pattern of stemness markers in synchronous multi-focal HCC. METHODS:In the first cohort, 21 liver explants with multi-focal HCC were examined for expression of stemness markers EpCAM, Sox9 and CK19 by immunohistochemistry (IHC). Expression data of 50 tumor nodules were analyzed to determine the concordance of expression among nodules in the same livers. In the second cohort, 14 tumor nodules from 6 multi-focal HCC cases proven as intra-hepatic metastasis were examined for Soc9 immunoexpression. RESULTS:In the first cohort, thirty nodules from 16 cases expressed one or more markers, with Sox9 being most frequently expressed. Complete concordance of expression pattern for all 3 markers was observed in 6 cases. Discrepancy of staining degree was noted in 4 cases for EpCAM, 14 cases for Sox9, and 6 cases for CK19. A two-tier or three-tier difference in staining scores was noted in 5 cases for Sox9 and one case for CK19. With Sox9, identical tumor morphology in terms of Edmondson grading and growth pattern did not infer the same degree of immunoexpression; and the largest tumor nodule was not representative of highest IHC score. In the second cohort of intra-hepatic metastasis, complete concordance of Sox9 expression level was observed in 5 out of 6 cases; while the remaining case showed a 1-tier difference of positive staining. CONCLUSIONS:Our findings suggested that clonality of tumor nodules is apparently an important factor to infer immunoexpression pattern. When there is limited information to discern multiple primaries versus intra-hepatic metastasis in multi-focal HCC, discordant degree of stemness markers expression among tumor nodules was commonly observed especially for markers with higher frequency of expression. Pathological features alone do not necessarily indicate the expression pattern of the synchronous nodule and in this scenario examination of each tumor nodule is justified.
journal_name
Diagn Patholjournal_title
Diagnostic pathologyauthors
Lo RC,Leung CO,Chok KS,Ng IOdoi
10.1186/s13000-017-0649-9subject
Has Abstractpub_date
2017-08-01 00:00:00pages
56issue
1issn
1746-1596pii
10.1186/s13000-017-0649-9journal_volume
12pub_type
杂志文章abstract::Epstein-Barr virus (EBV)-associated B-cell post-transplantation lymphoproliferative disorder (PTLD) is a severe complication following stem cell transplantation. This is believed to occur as a result of iatrogenic immunosuppression leading to a relaxation of T-cell control of EBV infection and thus allowing viral reac...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-5-21
更新日期:2010-03-31 00:00:00
abstract:BACKGROUND:A recently published transcript set is suitable for gene expression-based discrimination of normal colonic and colorectal cancer (CRC) biopsy samples. Our aim was to test the discriminatory power of the CRC-specific transcript set on independent biopsies and on formalin-fixed, paraffin-embedded (FFPE) tissue...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-015-0363-4
更新日期:2015-07-25 00:00:00
abstract:BACKGROUND:After introduction of the concept of critical value (CV) in laboratory medicine, some efforts were performed to define possible critical values in surgical pathology. Critical diagnosis (critical value) is a concept recently established in surgical pathology and is a challenging issue among pathologists and ...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-3-30
更新日期:2008-07-12 00:00:00
abstract:BACKGROUND:Osteosarcoma is the most common primary bone malignancy with high local aggressiveness and rapid metastasizing potential, resulting in poor survival. Increasing reports suggest that deregulated microRNAs (miRNAs) might provide novel therapeutic targets for cancers. However, the expression of miR-26a and miR-...
journal_title:Diagnostic pathology
pub_type: 杂志文章,收录出版
doi:10.1186/s13000-015-0400-3
更新日期:2015-09-17 00:00:00
abstract:BACKGROUND:The polymorphism Pro12Ala in peroxisome proliferator-activated receptor-γ2 gene (PPARγ2) has been reported to be associated with diabetic nephropathy (DN) in some studies, though the results remain inconclusive. To explore this relationship between PPARγ2 Pro12Ala polymorphism and the susceptibility for DN, ...
journal_title:Diagnostic pathology
pub_type: 杂志文章,meta分析,评审
doi:10.1186/1746-1596-8-118
更新日期:2013-07-15 00:00:00
abstract:BACKGROUND:Esophageal squamous cell carcinoma (ESCC) still remains intractable disease with few therapeutic options. Programmed death-ligand 1 (PD-L1), which is essential for immune evasion, is involved in the pathogenesis of ESCC and thus is a potential therapeutic target. PIK3CA, KRAS, and BRAF mutations, microsatell...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-020-01045-4
更新日期:2020-10-14 00:00:00
abstract::Intravascular large cell lymphoma is a rare subtype of extranodal large cell lymphoma characterized by the presence of neoplastic cells within the lumina of small vessels. Most cases of intravascular large cell lymphoma have a B-cell phenotype. To date, 12 cases of intravascular natural killer (NK/)/T-cell lymphoma (I...
journal_title:Diagnostic pathology
pub_type: 杂志文章,评审
doi:10.1186/s13000-015-0330-0
更新日期:2015-07-16 00:00:00
abstract:BACKGROUND:Patients with pathologic stage (p-Stage) IA non-small cell lung cancer (NSCLC) have a good survival rate because of possible curative resection. However, up to 10% of these patients relapse postoperatively. To identify unfavorable prognostic factors, we retrospectively analyzed the clinicopathological featur...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-015-0249-5
更新日期:2015-04-02 00:00:00
abstract:BACKGROUND:Adult granulosa cell tumors of the ovary (GCTs) are sex cord stromal tumors of unpredictable behaviour. Up to now, the prediction of the relapsing/malignant potential remains difficult. CD56 (NCAM) in GCTs was previously described in only two studies. However, the expression of its isoforms was not examined....
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-3-29
更新日期:2008-07-09 00:00:00
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journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-014-0229-1
更新日期:2014-12-17 00:00:00
abstract:BACKGROUND:c-MET is an oncogene protein that plays important role in gastric carcinogenesis and has been introduced as a prognostic marker and potential therapeutic target. The aim of this study was to evaluate the frequency of c-MET overexpression and its relationship with clinicopathological variables in gastric canc...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-7-57
更新日期:2012-05-28 00:00:00
abstract:BACKGROUND:Human kallikrein gene 6 (KLK6) is a member of the human kallikrein gene family (Kallikreins, KLKs). Human kallikrein-related peptidase 6 (hK6) is a trypsin-like serine protease encoded by the KLK6, has been reported to be highly expressed in several cancers including gastric cancer. In this study, we investi...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-8-62
更新日期:2013-04-15 00:00:00
abstract::Several types of colorectal cancers are associated with a prominent lymphoid component, which is considered a positive prognostic factor. We report a case of a dome-type carcinoma of the cecum in a 57 year old female. The sessile, non-polypoid lesion histologically consisted of a tubulovillous adenoma with low-grade d...
journal_title:Diagnostic pathology
pub_type: 杂志文章,评审
doi:10.1186/s13000-015-0305-1
更新日期:2015-07-09 00:00:00
abstract::This research was conducted on ten glass slides selected from the histopathology evaluation chickens. Five slides of control's chickens healthy and five slides of chickens infected experimentally with chicken anemia virus (CAV slide) between one and twenty-one days post infection (PI), they were analyzed in magnificat...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-3-S1-S21
更新日期:2008-07-15 00:00:00
abstract::Meningioma, craniopharyngeoma and glioma are mainly intracranial lesions. Nevertheless, in rare cases these entities may occur solely as extracranial lesions that may present as intranasal/sinusoidal masses, with headaches and nasal obstruction. We present three cases of common intracranial tumors, with purely extracr...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-3-14
更新日期:2008-04-16 00:00:00
abstract:BACKGROUND:GATA-binding protein 3 (GATA3) has been identified as a sensitive marker for breast carcinoma but its sensitivity in primary genital extramammary Paget diseases (EMPDs) has not been well studied. METHODS:Here we investigated immunohistochemical expression of GATA3 in 72 primary genital EMPDs (35 from female...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-017-0638-z
更新日期:2017-07-10 00:00:00
abstract:BACKGROUND:The microRNAs present a class of non-coding RNAs which are usually implicated in tumor biology. Recent report has unraveled that a novel member of microRNA family called miR-1246. However, the functional role and molecular mechanisms of miR-1246 in non-small cell lung cancer (NSCLC) is still elusive. METHOD...
journal_title:Diagnostic pathology
pub_type: 杂志文章,收录出版
doi:10.1186/s13000-015-0366-1
更新日期:2015-07-25 00:00:00
abstract:BACKGROUND:The tumor transformation mechanism of a plasmacytoid urothelial carcinoma remains unexplained. We describe the case of a plasmacytoid urothelial carcinoma of the renal pelvis in which the expression of zinc finger E-box-binding homeobox 1 (ZEB1), a key nuclear transcription factor in an epithelial-mesenchyma...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-020-01043-6
更新日期:2020-10-08 00:00:00
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journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-015-0331-z
更新日期:2015-07-02 00:00:00
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journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-2-48
更新日期:2007-12-18 00:00:00
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journal_title:Diagnostic pathology
pub_type: 杂志文章,评审
doi:10.1186/s13000-015-0270-8
更新日期:2015-04-16 00:00:00
abstract:BACKGROUND:Mesonephric adenocarcinoma (MNAC) is a rare tumor of the female genital tract, which originates from mesonephric duct remnants. Its diagnosis is pathologically challenging, because MNAC may exhibit a mixture of morphological patterns that complicates the differential diagnosis. CASE PRESENTATION:The patient...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-019-0847-8
更新日期:2019-07-03 00:00:00
abstract:BACKGROUND:It is not clear if sentinel lymph node (SLN) mapping can improve outcomes in patients with colorectal cancers. The purpose of this study was to determine the prognostic values of ex vivo sentinel lymph node (SLN) mapping and immunohistochemical (IHC) detection of SLN micrometastasis in colorectal cancers. M...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-7-71
更新日期:2012-06-22 00:00:00
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journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-9-24
更新日期:2014-01-29 00:00:00
abstract:BACKGROUND:Crowdsourcing, i.e., the outsourcing of tasks typically performed by a few experts to a large crowd as an open call, has been shown to be reasonably effective in many cases, like Wikipedia, the Chess match of Kasparov against the world in 1999, and several others. The aim of the present paper is to describe ...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-9-S1-S6
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:Gastrointestinal stromal tumors (GISTs), a type of mesenchymal tumor in the gastrointestinal tract, are believed to be closely associated with PDGFRA and C-KIT mutations. Schwannoma in the stomach, which is an unusual location, is a rare disorder. The simultaneous occurrence of the two diseases is rarer than...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/s13000-019-0898-x
更新日期:2019-10-23 00:00:00
abstract:UNLABELLED:A 34-year-old female, with a history of continued asbestos exposure, presented with a papillary peritoneal mesothelioma with a diffuse, prominent clear foamy cell change, with microvacuolation in its papillary lining, that expressed cytokeratins 7, 5/6 and calretinin as well as nuclear WT-1 and apical membra...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-8-162
更新日期:2013-09-25 00:00:00
abstract::A 42-year-old male presented right upper abdomen pain for more than 6 days, which misdiagnose calculus of intrahepatic duct and acute cholecystitis. An approximately 1.5 cm x 1.0 cm x 1.0 cm nodule was found and resected in left lateral lobe of hepatic. Pathological examination showed spindle cell and fibroblast -like...
journal_title:Diagnostic pathology
pub_type: 杂志文章,评审
doi:10.1186/1746-1596-8-195
更新日期:2013-12-02 00:00:00
abstract::Diagnostic surgical pathology or tissue–based diagnosis still remains the most reliable and specific diagnostic medical procedure. The development of whole slide scanners permits the creation of virtual slides and to work on so-called virtual microscopes. In addition to interactive work on virtual slides approaches ha...
journal_title:Diagnostic pathology
pub_type: 杂志文章
doi:10.1186/1746-1596-6-s1-s12
更新日期:2011-01-01 00:00:00
abstract:BACKGROUND:We report a case of a 33-year-old man who presented with immunoglobulin (Ig)G4-related disease (IgG4-RD) forming a pseudotumor in the left paratesticular region during oral administration of corticosteroid for Wells syndrome, which involves cellulitis with eosinophilia. CASE PRESENTATION:The patient was int...
journal_title:Diagnostic pathology
pub_type: 杂志文章,评审
doi:10.1186/s13000-014-0225-5
更新日期:2014-12-09 00:00:00