- Fine-Needle Aspiration Cytology of the Nodal Marginal Zone Lymphoma.
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Seung Kyu Choi, Ji Eun Kwon, Young Hyeh Ko
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Korean J Pathol. 2011;45(4):406-411.
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DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.4.406
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 Abstract
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- BACKGROUND
Nodal marginal zone lymphoma (NMZL) is a rare B-cell neoplasm consisting of heterogeneous cellular components and residual B-cell follicles. Because of such histological features, it is difficult to diagnose NMZL by fine needle aspiration (FNA) cytology. We reviewed FNA cytology of NMZL to identify a cytological clue to avoid misdiagnosing NMZL.
METHODS
Histological, cytological, and clinical findings of seven cases of NMZL were reviewed.
RESULTS
Most cases showed nodular aggregates of lymphohistiocytes derived from the germinal center irrespective of histological pattern. The cellular components were heterogeneous and composed of mature small lymphocytes, intermediate and large lymphocytes, immunoblasts, tingible body macrophages, and follicular dendritic cells. Intermediate-sized neoplastic cells with a pale nucleus were observed but difficult to identify because of admixed non-neoplastic cells, which outnumbered neoplastic cells. Except for one case with a high proportion of intermediate-sized cells, the other six cases were initially diagnosed as reactive hyperplasia. A flow cytometric analysis was performed in two cases and failed to demonstrate a monoclonal B-cell population.
CONCLUSIONS
The FNA showing a reactive hyperplasia-like smear pattern should be carefully observed by experienced cytopathologists to identify intermediate-sized neoplastic cells. Clinical information including the size of the lymph nodes is important to avoid a misdiagnosis.
- The Expression Pattern of Annexin A1 in Urinary Bladder Urothelial Carcinoma and Its Clinicopathologic Significance.
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Hojung Lee, Seung Kyu Choi, Young Ok Hong, Won Mi Lee, Sook Kyung Ko, Eun Kyung Kim, Jong Eun Joo
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Korean J Pathol. 2011;45(1):62-68.
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DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.1.62
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Abstract
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- BACKGROUND
Annexin A1 (ANXA1) is known to be involved in the progression and differentiation of various tumors.
However, its significance and role in bladder carcinogenesis has not been fully elucidated. To determine the role ANXA1 plays in urothelial carcinoma (UC), we investigated the expression of ANXA1 protein in normal urothelial tissue, carcinoma in situ (CIS), and UC of the urinary bladder.
METHODS
Protein expression level of ANXA1 and its subcellular localization were analyzed in 88 cases of UCs and corresponding 24 normal tissues and 24 CISs by immunohistochemistry.
RESULTS
ANXA1 was significantly down-regulated at all subcellular localization in CIS and in the cytoplasm and membrane of cells of UC, compared to normal tissues. No significant correlation between ANXA1 expression level and tumor depth (pT), growth pattern, and recurrence was found.
However, cytoplasmic and membranous ANXA1 were significantly up-regulated in high grade than in low grade UC (p=0.02 in cytoplasm and p=0.03 in membrane).
CONCLUSIONS
These results suggest that ANXA1 dysregulation is involved in urothelial carcinogenesis and ANXA1 is potentially a marker for the pathologic differentiation of UC.
- Enterobius vermicularis Ova in a Vaginal Smear.
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Seung Kyu Choi, Eun Kyung Kim, Young Ok Hong, Ho Jung Lee, Won Mi Lee, Sook Kyung Ko, Jong Eun Joo
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Korean J Pathol. 2010;44(3):341-342.
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DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.3.341
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Abstract
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- Enterobius vermicularis is one of the most common parasites found in the intestine of humans. The gravid female worms migrate outside the anus to release eggs on the perianal skin. Rarely, they migrate to the genitourinary tract in female patients. We present a case in which pinworm eggs were found in a cervicovaginal smear of a 37-year-old woman.
The eggs were elongated oval shaped and flattened on one side. The thick, double contoured birefringent shell stained bright yellow or orange. Some coarsely granular embryos or curved larvae were enclosed in the refractile shell. Empty eggs or wrinkled shells with clumped granular material were also present. Although pinworm eggs are easily identified because of their characteristic morphologic appearance, careful screening is needed due to the frequent masking by inflammatory cells.
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Citations
Citations to this article as recorded by  - High case enterobiasis in school children and potential eggs distribution on the bed
Didik Sumanto, Sayono E, Wulandari Meikawati, Tri Dewi Kristini, Wahyu Handoyo, Aris Sugiharto
Journal of Microbiology & Experimentation.2022; 10(1): 33. CrossRef - Enterobius vermicularis larvae in urine sample of female student: The first case report in Indonesia
Didik Sumanto, Sayono Sayono, Puji Lestari Mudawamah
Journal of Microbiology & Experimentation.2021; 9(1): 1. CrossRef - Vaginal Enterobius vermicularis diagnosed on liquid‐based cytology during Papanicolaou test cervical cancer screening: A report of two cases and a review of the literature
Chun‐Yi Tsai, Rachel Junod, Martine Jacot‐Guillarmod, Charles Beniere, Sonia Ziadi, Massimo Bongiovanni
Diagnostic Cytopathology.2018; 46(2): 179. CrossRef - Recurrent paediatric pinworm infection of the vagina as a potential reservoir for Enterobius vermicularis
B. Kashyap, J.C. Samantray, S. Kumar, R. Jhamb, A.K. Singh, I.R. Kaur
Journal of Helminthology.2014; 88(3): 381. CrossRef
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