• Title, Summary, Keyword: immunohistochemical diagnosis

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Correlation of Clinical and Immunohistochemical Diagnosis in Patients with Pituitary Adenomas

  • Park, Sung-Ku;Jung, Shin;Jung, Tae-Young;Kim, In-Young;Kim, Soo-Han;Kang, Sam-Suk
    • Journal of Korean Neurosurgical Society
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    • v.41 no.6
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    • pp.367-370
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    • 2007
  • Objective: Pituitary adenomas are common neurological lesions believed to account for 10% to 15% of all primary brain tumors. There can be diagnostic confusion due to discordance of the preoperative endocrine and the postoperative immunohistochemical diagnosis. In this study, the rate of discordance between preoperative and postoperative findings and their clinical implications were investigated. Methods: From March 2005 to March 2006, 26 patients who underwent surgery for a pituitary adenoma were enrolled in this study. The preoperative pituitary hormone level and postoperative immunohistochemical results were compared and analyzed. Results: The median age of the patients was 38 years [range 15-66 years]. The male to female ratio was 8 to 18. The endocrine evaluation showed 16 hormonally-active and 10 hormonally-inactive adenomas. The immunohistochemical findings showed : 13 prolactin-positive, 1 GH-positive, 1 FSH-positive, 8 pleurihormone-positive and 3 stain-negative adenomas. The percentage of discordance observed between the preoperative endocrine and postoperative immunohistochemical diagnosis was 54%. Nine of 10 endocrine non-functioning adenomas showed : 3 PRL positive, 1 GH positive, 2 PRL+GH positive, 1 TSH+FSH positive, 1 FSH+ACTH+PRL positive and 1 FSH+LH+PRL positive adenomas by immunohistochemistry. Three endocrine PRL+GH secreting adenomas showed 2 PRL positive and 1 FSH+GH positive by immunohistochemistry. One endocrine PRL secreting and 1 GH secreting adenoma showed 1 PRL+ TSH positive and 1 GH+PRL positive by immunohistochemistry, respectively. The diagnosis of the other 12 pituitary adenomas showed concordance. Conclusion : The results of this study showed 54% discordance rate between the preoperative endocrine and postoperative immunohistochemical diagnosis for pituitary adenomas.

Pathologic differential diagnosis of metastatic carcinoma in the liver

  • Park, Jeong Hwan;Kim, Jung Ho
    • Clinical and Molecular Hepatology
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    • v.25 no.1
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    • pp.12-20
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    • 2019
  • The liver is one of the most common sites to which malignancies preferentially metastasize. Although a substantial number of liver malignancies are primary tumors, including hepatocellular carcinoma and intrahepatic cholangiocarcinoma, the metastasis of carcinomas to the liver is relatively common and frequently encountered in clinical settings. Representative carcinomas that frequently metastasize to the liver include colorectal carcinoma, breast carcinoma, neuroendocrine tumors, lung carcinoma, and gastric carcinoma. The diagnostic confirmation of suspected metastatic lesions in the liver is generally achieved through a histopathologic examination of biopsy tissues. Although morphology is the most important feature for a pathologic differential diagnosis of metastatic carcinomas, immunohistochemical studies facilitate the differentiation of metastatic carcinoma origins and subtypes. Useful immunohistochemical markers for the differential diagnosis of metastatic carcinomas in the liver include cytokeratins (CK7, CK19, and CK20), neuroendocrine markers (CD56, synaptophysin, and chromogranin A), and tissue-specific markers (CDX2, SATB2, TTF-1, GCDFP-15, mammaglobin, etc.). Here, we provide a brief review about the pathologic differential diagnosis of major metastatic carcinomas in the liver.

Angioleiomyoma of the oral cavity: a case report and brief review of the literature

  • Matiakis, Apostolos;Karakostas, Panagiotis;Pavlou, Achilleia-Maria;Anagnostou, Eleftherios;Poulopoulos, Athanasios
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.44 no.3
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    • pp.136-139
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    • 2018
  • This study presents a case of an oral angioleiomyoma along with its clinical diagnostic approach and laboratory confirmation. The differential diagnosis, especially from angioleiomyosarcoma, is also included. A 51-year-old patient presented with a tumor-like lesion on his upper labial mucosa. The clinical examination revealed a benign lesion that was surgically removed. Histopathological and immunohistochemical examinations confirmed the diagnosis of an oral angioleiomyoma. The post-surgical period was uneventful. No recurrence had occurred after a year of follow-up surveillance. Oral angioleiomyoma is a very rarely occurring oral lesion. Clinically, it may mimic some benign lesions, including fibroma, pyogenic granuloma or minor salivary gland tumor. Surgical excision is the treatment of choice. Histological and immunohistochemical examination can confirm the diagnosis. The differential diagnosis is crucial to rule out angioleiomyosarcoma.

Primary Central Nervous System Lymphoma: A Clinicopathological and Cytomorpholgical Study from A Tertiary Care Centre in Chennai, India

  • Ambroise, M. Moses;Ghosh, Mitra;Mallikarjuna, V.S.;Annapurneswari, S.;Kurian, Ann;Chakravarthy, Ranjani
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.2
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    • pp.727-731
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    • 2013
  • Background: The aim of this study was to analyze the clinicopathological and immunohistochemical features of primary central nervous system lymphoma (PCNSL) cases occurring in Indian patients and also study the utility of the crush smear preparation in intraoperative diagnosis. Materials and Methods: The immune status, clinical, radiological details, immunohistochemical profile, histopathological findings and cytological features in smear preparation of 32 cases of PCNSL were analyzed. Patients with systemic NHL and skull-base lymphomas were excluded. Results: The mean age of our patients was 52 years with a male: female ratio 1:1. A periventricular location was found in 62.5% of patients. None of our PCNSL cases were associated with AIDS. All cases except one were diffuse large B-cell lymphomas. Intraoperative diagnosis using crush smears allowed correct prediction in 93% of cases. Conclusions: Our study shows that PCNSL is seen predominantly in immunocompetent patients in India. The age of presentation is relatively young as compared to the West. Our study also stresses the utility of crush smear preparation in establishing an intraoperative diagnosis.

Expression of Neuronal Markers, NFP and GFAP, in Malignant Astrocytoma

  • Hashemi, Forough;Naderian, Majid;Kadivar, Maryam;Nilipour, Yalda;Gheytanchi, Elmira
    • Asian Pacific Journal of Cancer Prevention
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    • v.15 no.15
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    • pp.6315-6319
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    • 2014
  • Background: Immunohistochemical markers are considered as important factors in diagnosis of malignant astrocytomas. The aim of the current study was to investigate the frequency of the immunohistochemical markers neurofilament protein (NFP) and glial fibrillary acidic protein (GFAP) in malignant astrocytoma tumors in Firoozgar and Rasool-Akram hospitals from 2005 to 2010. Materials and Methods: In this cross-sectional study, immunohistochemical analysis of NFP and GFAP was performed on 79 tissue samples of patients with the diagnosis of anaplastic and glioblastoma multiform (GBM) astrocytomas. Results: The obtained results demonstrated that all patients were positive for GFAP and only 3.8% were positive for NFP. There was no significant association between these markers and clinical, demographic, and prognostic features of patients (p>0.05). Conclusions: NFP was expressed only in GBMs and not in anaplastic astrocytomas. It would be crucial to confirm the present findings in a larger number of tumors, especially in high grade gliomas.

Immunohistochemical diagnosis on rabies virus using its monoclonal antibody in mice (단크론항체를 이용한 광견병바이러스의 면역병리조직학적 진단)

  • Kang, Mun-il;Park, Nam-yong;Song, Jae-yeong
    • Korean Journal of Veterinary Research
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    • v.33 no.2
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    • pp.255-261
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    • 1993
  • For a immunohistochemical diagnosis of the frozen and paraffin-embedded tissues against rabies virus, mice were intracerebrally inoculated with challege virus standard(CVS) rabies virus and then were used to detect the rabies viral antigen by the immunoperoxidase(IP) and the avidin-biotin complex(ABC) method. In this study, the results confirmed that ABC and IP methods, although the former showed more specific and sensitive than the latter, were reliable and effective for the demonstration of rabies virus in both frozen and paraffin-embedded brain tissues prepared from rabies-infected mice. Additionally, IP technique using the monoclonal antibody against rabies virus could be recommended as a standard diagnostic tool instead of the present immunofluorescent method for the local veterinary services in Korea.

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Cytologic Features of Cancers Metastatic to the Lung and Diagnostic Usefulness of Immunohistochemistry : Distinction Between Primary and Secondary Lung Tumors (전이성 폐종양의 세포소견과 면역조직화학적 검사의 유용성)

  • Oh, Young-Lyun
    • The Korean Journal of Cytopathology
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    • v.19 no.1
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    • pp.16-26
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    • 2008
  • The lungs are one of the most common visceral sites for metastatic disease. The identification of a metastasis from a second primary lung tumor is clinically important for patients with pulmonary metastases of an extrathoracic origin. Although the cytologic features of metastatic tumors involving the lung have been extensively described, making the cytologic diagnosis is usually not easy in the absence of clinical information. However, the immunohistochemical staining for many tumor markers and the different expressions of cytokeratin 7 and 20 are very useful in the diagnosis. This review presents the cytomorphological spectrum of metastatic tumors along with the immunohistochemical findings.

Transducer-like Enhancer of Split 1 as a Novel Immunohistochemical Marker for Diagnosis of Synovial Sarcoma

  • Atef, Aliaa;Alrashidy, Mohammed
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.15
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    • pp.6545-6548
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    • 2015
  • Background: Synovial sarcoma is a mesenchymal neoplasm that accounts for around 10% of all soft tissue sarcomas. The diagnosis of synovial sarcoma can be a challenging task, particularly with small biopsy specimens. Aim: We investigated transducer-like enhancer of split 1 (TLE1), monoclonal antibody, expression by immunohistochemical analysis in a group of 74 synovial sarcoma cases, 20 cases of MPNST, 12 cases of neurofibroma, 15 cases of schwannoma, 5 cases of MFH, 10 cases of lieomyosarcoma and 10 cases of solitary fibrous tumor. Materials and Methods: Whole tissue sections were examined: (39 biphasic and 35 monophasic). Nuclear immunoreactivity was scored as negative (<5% of cells positive), 1+(mild /5-25%), 2+ (moderate/25-50%), and 3+ (strong >50%). Results: Overall, 71 (96%) of 74 synovial sarcomas were positive for TLE1, including 37 biphasic (95%) and 34 monophasic (97%) tumors. Other spindle cell tumors showed very low or absent staining of TLE1. Conclusions: We conclude that TLE1 is a sensitive marker and can be a useful diagnostic marker for synovial sarcoma, particularly the monophasic forms.

Role of P57KIP2 Immunohistochemical Expression in Histological Diagnosis of Hydatidiform Moles

  • Triratanachat, Surang;Nakaporntham, Pattawan;Tantbirojn, Patou;Shuangshoti, Shanop;Lertkhachonsuk, Ruangsak
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.4
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    • pp.2061-2066
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    • 2016
  • Purpose: To determine the significance of P57KIP2 immunohistochemistry expression in the histopathological diagnosis of hydatidiform mole. Materials and Methods: Hydatidiform mole patients at King Chulalongkorn Memorial Hospital between January 1999 and December 2011 were recruited. Two gynecologic pathologists reviewed histopathologic slides to confirm diagnosis. Formalin-fixed, paraffin-embedded tissue sections were stained using a bstandard immunostaining system with monoclonal antibodies against P57KIP2 protein. Correlations among pathological features, immunohistochemical expression and clinical data were analyzed. Results: One hundred and twenty-seven hydatidiform mole patients were enrolled. After consensus review, 97 cases were diagnosed as complet (CHM) and 30 cases as partial (PHM). Discordance between the first and final H&E diagnoses was found in 19 cases (14.9%, k= 0.578). Significant pathological features to classify the type of hydatidiform mole are central cisterns, trophoblastic proliferation, trophoblastic atypia, two populations of villi, fetal vessels and scalloped borders. After performing immunohistochemistry for P57KIP2, 107 cases were P57KIP2 negative and 20 cases positive. Discordant diagnoses between final H&E diagnosis and P57KIP2 immunohistochemistry was identified in 12 cases (9.4%). Sensitivity of final H&E diagnosis for CHM was 89.7%; specificity was 95.0%. PHM sensitivity and specificity of final H&E diagnosis was 95.0% and 89.7%, respectively. Conclusions: Histopathological diagnosis alone has certain limitations in accurately defining types of hydatidiform mole; P57KIP2 immunohistochemistry is practical and can be a useful adjunct to histopathology to distinguish CHM from non-CHM.

Avidin-biotin complex for immunohistochemical diagnosis of Aujeszky's disease and hog cholera (Avidin-biotin 복합체를 이용한 오제스키병과 돼지콜레라의 면역조직화학적 감별진단)

  • Kim, Soon-bok;Sur, Jung-hyang;Moon, Un-gyeong
    • Korean Journal of Veterinary Research
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    • v.30 no.4
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    • pp.435-440
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    • 1990
  • Ten pigs infected with Aujeszky's disease virus (ADY) or hog cholera virus(HCV) were tested for the detection of virus antigens in frozens or paraffin-embedded sections by avidin-biotin-peroxidase complex(ABC) method. Tonsils, spleens, cerebra and buffy coats were examined for the immunohistochemical test. Where ADV antigen was detected by ABC, a dark brown deposit occurred in both the nucleus and the cytoplasm of lymphocytes and macrophages, however, HCV antigen was demonstrated in the cytoplasm of the infected cells. ADV-positive cells were most frequently detected in tonsils and cerebra, whereas, HCV -positive cells were frequently observed in spleens. And buffy coat were also good for both virus detection. The results suggested that ABC method is considered as an excellent and reliable tool for confirmative diagnosis of these viral diseases.

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