Wai Kuen Ng

..The pathogenesis may be related to abnormal production of truncated actin filaments or alteration in microenvironment...

..Clear cell change, which may occur in a variety of thyroid neoplasms, is an uncommon finding. A fine needle aspirate of a follicular neoplasm showing extensive clear cell morphology is even more rarely described in the literature...

..The underlying etiology and biologic significance remains uncertain. The thin-layer cytology findings and association with human papillomavirus (HPV) have not been studied thoroughly...

..Glassy cell carcinoma is a rare form of poorly differentiated carcinoma of the cervix with no obvious squamous or glandular differentiation. Its liquid-based cytology findings have not been described before...

..A distinctive micropapillary variant with most tumor cells arranged in micropapillae/pseudoacini has not been described previously...

..Secondary lymph node involvement is rarely encountered until late in the disease course. The fine needle aspiration cytology of NK/T-cell lymphoma with a nodal presentation has not been described before...

..To describe the thin-layer cytology findings of small cell carcinoma of the low female genital tract, with histologic correlation and human papillomavirus (HPV) genotyping...

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..To describe the thin-layer cytology and diagnostic pitfalls of papillary squamotransitional cell carcinoma of the cervix, with clinical and histologic correlation...

..To describe the thin-layer cytology (if available) and histologic findings of warty (condylomatous) carcinoma of the cervix, with molecular analysis for HPV screening...

..To describe and reevaluate the fine needle aspiration cytology findings of pseudoangiomatous stromal hyperplasia (PASH) of the breast, with histologic, immunohistochemical and ultrastructural correlation...

..Cytoplasmic eosinophilia in breast tumors is due mainly to abundance of secretory granules, lysosomes and/or mitochondria. Diffuse cytoplasmic hyalinization caused by intermediate filaments has not been described before...

..Although some cases do represent reparative change of dysplastic epithelium, the overall significance of identifying atypical reparative cells, especially in liquid-based cytology specimens, has not been investigated thoroughly...

..A classic example of this group is angioimmunoblastic T-cell lymphoma (AILD-T). The fine-needle aspiration cytology of this relatively well-defined histologic subtype of T-cell lymphoma is rarely described in the literature...

..In a correct clinical setting, the peculiar association with mucoid matrix and absence of classic lipoblasts should also raise the suspicion of metastatic myxoid leiomyosarcoma...

..Details of the fine needle aspiration cytology of this phenomenon, especially in thin-layer preparations, have been described rarely...

..Similar changes in the tubal epithelium are exceedingly rare. The cytologic findings of this phenomenon have never been described before...

..To describe the fine needle aspiration cytology findings of invasive micropapillary carcinoma and correlate them with the histologic appearance...

..Recognition of the subtle cytologic differences, together with cell block examination, immunocytochemistry, and proper clinicoradiologic correlation, is crucial for an accurate preoperative diagnosis...

..Recognition of these "pseudoanaplastic" cytologic features also helps to expand the morphologic spectrum of chordoma...

..A correct diagnosis of dirofilariasis may help to spare patients from unnecessary medical and surgical interventions...

..The usefulness of this immunostain in cytology specimens has not been thoroughly discussed in the literature...

..To describe the fine needle aspiration cytology findings of ductal breast carcinoma with neuroendocrine differentiation and correlate them with the histologic appearance...

..To develop a local quality assurance program in cytopathology based on circulation of patient specimens on glass slides, with limited resources...

..To describe the fine needle aspiration cytology findings of apocrine carcinoma of breast and correlate them with the histologic appearance...

..To describe the fine needle aspiration cytology findings of fibroadenoma with multinucleated stromal giant cells, with histologic correlation...

..Papillary squamotransitional cell carcinoma of the lower female genital tract is a rare form of malignancy with distinctive histologic features. To my knowledge, its adenosquamous counterpart has not been reported before...

..Introduction of dichotomous subcategorization of ASC is relevant, with ASC-H associated with a much higher risk of subsequent high-grade squamous lesions...

..To delineate the significance of detecting squamous cells in fine needle aspiration biopsy of breast lesions...

..However, difficulties persist in making cytologic diagnosis...

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..This study evaluated the impact of the Bethesda System (TBS) 2001 in reporting of atypical glandular cells (AGC) when using conventional Pap smears (CS) and liquid-based cytology preparations (LBC)...

..Recognition of the peculiar combination of benign apocrine cells and clumps of nondescript spindle cells should alert the cytologist to this rare but distinct entity, which carries a propensity for malignant transformation...