- Neoplastic Stromal Cells of Intracranial Hemangioblastomas Disclose Pericyte-derived Mesenchymal Stromal Cells-like Phenotype.
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Yong Han Jung, Jeong Kim, Bo Mi Kim, Eun Kyoung Kim, Mi Seon Kang, Soojin Jung, Young Il Yang, Shin Kwang Khang
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Korean J Pathol. 2011;45(6):564-572.
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DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.6.564
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 Abstract
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- BACKGROUND
Stromal cells (SCs) of hemangioblastomas (HBs) have been regarded as true neoplastic components, but their ontogeny remains unclear. Convincing evidence suggests that embryonic mesenchymal cells may be the cells of origin of HBs. The aim of the present study was to investigate the immunophenotypic characteristics of neoplastic SCs using a set of markers against endothelial cells (ECs), vascular smooth muscle cells (vSMCs), mesenchymal stromal cells (MSCs), and pericytes.
METHODS
Intracranial HBs (n=46), angiolipoma (n=9), and pyogenic granuloma (n=11) were retrieved and the immunophenotypic profile of SCs was determined by immune stainings.
RESULTS
The MIB-1 labeling index was significantly higher in SCs compared to that of ECs and vSMCs, regardless of the type of lesion. The neoplastic SCs of HBs consistently expressed both MSC and pericyte markers, but did not express markers of ECs and vSMCs. Double immunofluorescent staining demonstrated that the neoplastic SCs of HBs expressing MSC or pericyte markers directly abutted onto the ECs of capillaries/venules.
CONCLUSIONS
The results suggest that the neoplastic SCs of HBs share the immunophenotypic profile and distribution with those of pericyte-derived MSCs. Thus, HBs might originate from a distinctive population of pericyte-derived MSCs in the central nervous system.
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Citations
Citations to this article as recorded by  - Role of Endothelial-to-Mesenchymal Transition in the Pathogenesis of Central Nervous System Hemangioblastomas
Shigeki Takada, Masato Hojo, Noriyoshi Takebe, Kenji Tanigaki, Susumu Miyamoto
World Neurosurgery.2018; 117: e187. CrossRef - Endogenous Gastric-Resident Mesenchymal Stem Cells Contribute to Formation of Cancer Stroma and Progression of Gastric Cancer
Eun-Kyung Kim, Hye-Jung Kim, Young-Il Yang, Jong Tae Kim, Min-Young Choi, Chang Soo Choi, Kwang-Hee Kim, Jeong-Han Lee, Won-Hee Jang, Soon-Ho Cheong
Korean Journal of Pathology.2013; 47(6): 507. CrossRef
- Crush Cytologic Findings of Myxopapillary Ependymoma in Spinal Cord: A Case Report.
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Soo Jin Jung, Young Il Yang
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Korean J Cytopathol. 1999;10(1):73-78.
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- Myxopapillary ependymoma generally arise in the conus medullaris and filum terminale of adult spinal cord. These tumors are readily recognized due to unique histopathologic features, however, their cytologic features are not well described. When only a tiny sample is obtained, cytologic examination using crush preparation may be a useful diagnostic tool to help appropriate intraoperative diagnosis. We present the crush cytologic features of myxopapillary ependymoma arising in thoracic and lumbar spinal cord of a 13-year-old boy. The patient had complained of paraparesis and back pain for 1 month. The MRI image revealed a relatively well demarcated intramedullary mass in T11-L1 levels. Crush preparation for cytology were performed by biopsy material. Crush cytologic findings revealed high cellularity and small sized branching papillary clusters on fibrillary or mucinous background. The tumor cells had uniform round or elongated nuclei. The cytoplasmic process of tumor cells were attached to the vascular wall. Between the tumor cells and vascular walls, the perivascular collar of globoid acellular stroma with metachromatic reaction on toluidin blue stain was noted. The crush preparation of myxopapillary ependymoma is considered as a simple and highly accurate diagnostic tool for differentiation from other intramedullary neoplasms of central nervous system.
- Crush Cytology Features and Differential Diagnosis of Meningiomas and Schwannomas in Central Nervous System.
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Young Ju Kim, Mi Yeong Jeon, Young Il Yang, Chan Hwan Kim, Hae Kyoung Yoon, Shin Kwang Khang
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Korean J Cytopathol. 1996;7(2):169-176.
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- This study was performed in order to evaluate the usefulness of the crush cytologic features and differential diagnosis between meningiomas and schwannomas in the central nervous system. Deeply seated and unusually located meningiomas and schwannomas with equivocal or erroneous frozen section diagnosis can be correctly diagnosed cytologically in crush preparations. Twenty-four meningiomas and nine schwannomas were studied by frozen section and crush preparation technique. These tumors displayed distinctive cytologic features. In meningiomas, the tumor tissue fragments were easy to crush, and the tumor cells were arranged in small clusters, flat sheets, papilla-like, whorling pattern or singly. Individual tumor cells displayed round or oval nuclei with finely granular chromatin pattern and inconspicuous small nucleoli. Occasionally psammoma bodies, nuclear pseudoinclusion or nuclear grooves were found. In schwannomas, tissue fragments were hard in consistency and difficult to crush. The crushed tissue presented as thick, irregular fragments with sharp borders. The cells showed ill-defined cytoplasm and round, oval, cigar-shaped or curved nuclei. It is important to emphasize that the smear pattern under low-power view and cytologic features are helpful in discriminating between these two tumors.
- Adenocarcinoma Arising in Adenomyosis.
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Young Il Yang, In Sook Lim, Jong Eun Joo
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Korean J Pathol. 1995;29(2):272-274.
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- Adenocarcinoma in adenomyosis is unusual and it is mostly associated with adenocarcinoma in the endometrial mucosa. In contrast, adenocarcinoma arising in adenomyosis without endometrial adenocarcinoma is extremely rare and it suggests that it arises de novo from adenomyosis. We report a case of adenocarcinoma arising in adenomyosis in 44-year-old woman.
The endometrial cavity contained a polypoid lesion with atypical hyperplasia, but no evidence of adenocarcinoma in the endometrial mucosa. Simple, complex and atypical hyperplasia associated with well differentiated adenocarcinoma was also noted in the areas of adenomyosis.
- Prognostic Implications of DNA Ploidy and S-phase Fraction Comparing with Other Prognostic Factors in Advanced Coloretal Adenocarcinomas .
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Young Il Yang, Jong Eun Joo
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Korean J Pathol. 1995;29(2):170-180.
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- Dukes' stage of colorectal carcinoma has proven to be the most reliable and conventional prognostic indicator, followed by histological grade, lymph node metastases, tumor size, vascular and neural invasion. Flow cytometric analysis of DNA ploidy and S-phase fraciion (SPF) was examined to elucidate the correlations between sex, age, preoperative serum carcinoembryonic antigen (CEA) value, Dukes' stage, tumor site, size, gross features, histologic grade, and survival rate in 117 paraffin-embedded tissues of 68 cases of colorectal adenocarcinoma in Dukes' stage and 39 cases of colorectal adenoma and 10 cases of normal colonic mucosa.
DNA aneuploidy was detected in 30 cases(44%) in adenocarcinomas and 6 cases (15%) in adenomas. Although the DNA ploidy and SPF did not show any correlation with sex, age, preoperative serum CEA level, Dukes' stage, tumor size, site and gross features, the incidence of DNA aneuploidy in the moderately differentiated adenocarcinomas was significantly higher than that of the well differentiated adenocarcinomas (p=0.0127) An apparent correlation was found between survival rate and DNA ploidy, Dukes' stage, histologic grade and preoperative serum CEA value. Dukes' stage was the most reliable prognostic indicator (p=0.0106), followed by histologic grade (p=0.0230), DNA aneuploidy (p=0.0251) and preoperative serum CEA level. (p=0.0369) In the patients with Dukes' stage C, DNA aneuploidy was more important than histologic grade as a prognostic indicator (p=0.0202). Although high SPF, greater than 21% in adenocarcinoma, was associated with the lower 5-year survival rate (12.0%), it was not statistically significant.
These results suggest that DNA aneuploidy is regarded as biologic aggressiveness and considered as independent and/or dependent prognostic indicator along with Dukes' stage.
However, prognostic utility of the SPF was not significant.
- Fine Needle Aspiration Cytologic Findings of Inflammatory Breast Diseases.
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Hye Kyoung Yoon, Seol Mi Park, Mi Sun Kang, Young Il Yang, Chan Hwan Kim
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Korean J Cytopathol. 1995;6(2):156-162.
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- Fine needle aspiration of the breast is an important diagnostic tool in malignant lesions, but is also useful in differentiation of inflammatory breast diseases mimicking carcinoma clinically and radiologically. Recently. the authors have experienced eight biopsy-proven cases of chronic inflammatory diseases of the breast, which consisted of 4 cases of duct ectasia, 2 cases of fat necrosis, and a case of tuberculous mastitis and granulomatous mastitis respectively, Their cytologic features mainly based on the components and the relative frequency of inflammatory cells were evaluated for differential diagnosis of chronic inflammatory breast diseases.
The results are as follows: 1. In cases of duct ectasia, varying amount of neutrophils, mononuclear leukocytes, histiocytes and multinucleated giant cells were intermixed with benign epithelial cell clusters.
2. Abundant fat tissue fragments were diagnostic for fat necrosis. Histiocytes and mononuclear cells were main components but not rich, and neutrophils and giant cells were infrequently observed.
3. Characteristic granulomas composed of epithelioid cells, mononuclear leukocytes and Langhans} type giant cells and lymphocytic infiltrates were conspicuous in tuberculous mastitis, and occasionally neutrophils, necrotic materials and epithelial cell clusters were found.
4. In granulomatous mastitis, epithelioid cell granulomas were also noted but numerous neutrophils and histiocytes were intermingled within or outside the granulomas.
- Cytology of Crush Preparation in Central Nervous System Lesion.
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Young Il Yang, Sul Mi Park, Young Joo Kim, Shin Kwang Khang
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Korean J Cytopathol. 1994;5(2):79-89.
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- This study was performed in order to evaluate the accuracy and the usefulness of the cytology of crush preparation in central nervous system(CNS) lesions. Forty four intraoperative biopsies were performed at the time of craniotomy including 34 benign and 10 malignant lesions.
Crush preparations were prepared from tiny tissue fragments of craiotomy products. All cases were stained with toluidine blue. Intraoperative diagnoses made on cytologic examination were compared with the final paraffin section diagnoses.
Comparison between the results of the cytologic and histologic findings revealed an overall diagnostic accuracy of 88.6%. This study attests to the diagnostic accuracy of cytologic examination in CNS lesions. The detailed cytologic features are described and important criteria for the cytodiagnosis of CNS lesions are discussed.
- Aspiration Cytology of Insular Carcinoma of Thyroid: A Case Report.
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Young Il Yang, Chan Hawn Kim, Shin Kwang Khang
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Korean J Cytopathol. 1994;5(1):46-51.
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- Fine needle aspiration cytologic features of a case of insular carcinoma of the thyroid in a 23-year-old woman who presented a palpable neck mass is described. The aspirate showed cellular smear arranged in trabeculae, solid or loose clusters, and microfollicles in necrotic background. The tumor cells had uniform, small round, hyperchromatic nuclei.
The chromatin was finely granular, and nuclear membrane was smooth. Nucleoli were not discernible. Nuclear pleomorphism was minimal. The cytoplasm was usually scanty, pale, poorly outlined, and almostly amphophilic. Sometimes paranuclear cytoplasmic vacuoles were noted. Final diagnosis was confirmed by total thyroidectomy as insular carcinoma.
- A case of unsuspected pulmonary cryptococcosis in sputum cytology.
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Young Il Yang, Chan Hwan Kim, Shin Kwang Khang, Joung Eun Joo
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Korean J Cytopathol. 1993;4(2):156-159.
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- No abstract available.
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