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  1. Article ; Online: Thymic Carcinoma With Malignant Effusion-a Rare Cytologic and Radiologic Mimicker of Metastatic NSCLC.

    Ng, Joanna Ka Man / Chan, Cheuk Fun / Li, Joshua Jing Xi

    Journal of thoracic oncology : official publication of the International Association for the Study of Lung Cancer

    2023  Volume 18, Issue 4, Page(s) e35–e37

    MeSH term(s) Humans ; Thymoma ; Lung Neoplasms/diagnostic imaging ; Pleural Effusion, Malignant/pathology ; Carcinoma, Non-Small-Cell Lung/diagnostic imaging ; Thymus Neoplasms/diagnostic imaging ; Thymus Neoplasms/pathology
    Language English
    Publishing date 2023-03-27
    Publishing country United States
    Document type Letter
    ZDB-ID 2432037-7
    ISSN 1556-1380 ; 1556-0864
    ISSN (online) 1556-1380
    ISSN 1556-0864
    DOI 10.1016/j.jtho.2022.11.025
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Metastatic lung carcinoma in thyroid aspirates: A case series and literature review illustrating diagnostic challenges.

    Ng, Joanna Ka Man / Li, Joshua Jing Xi

    Cytopathology : official journal of the British Society for Clinical Cytology

    2022  Volume 33, Issue 6, Page(s) 696–706

    Abstract: Background: Papillary thyroid carcinoma (PTC) is the most common primary malignant thyroid neoplasm and malignant diagnosis in thyroid aspirates. Metastatic adenocarcinoma of the lung is an under-recognised mimicker which overlaps cytomorphologically ... ...

    Abstract Background: Papillary thyroid carcinoma (PTC) is the most common primary malignant thyroid neoplasm and malignant diagnosis in thyroid aspirates. Metastatic adenocarcinoma of the lung is an under-recognised mimicker which overlaps cytomorphologically and immunocytochemically with PTC. This case series reviews thyroid aspirates of metastatic lung carcinomas, aiming to address the similarities and methods of differentiating this entity from PTC.
    Methods: Thyroid aspirates of metastatic lung carcinomas were obtained by a computerised search. Clinico-cytological features and ancillary test results were reviewed. A literature review was performed for published cases of metastatic lung carcinomas in thyroid aspirates.
    Results: A total of 14 cases were found, including nine adenocarcinomas, three TTF1-positive non-small cell lung carcinomas (NSCLCs), one small cell carcinoma and one squamous cell carcinoma. The adenocarcinomas and TTF1-positive NSCLCs displayed PTC-like features including papillae/papillary-like fronds (n = 6/12, 50%), nuclear grooves (n = 5/12, 41.7%) and inclusions (n = 1/12, 8.3%), chromatin clearing (n = 3/12, 25%), calcifications (n = 3/12, 25%) and multinucleated giant cells (n = 2/12, 16.7%). Useful distinguishing features observed were prominent nucleoli, coarse chromatin, mitosis, and necrosis. TTF-1 immunocytochemistry was positive in most cases (n = 5/6, 83.3%), while PAX8 and thyroglobulin were consistently negative. EGFR exon 19 deletion was detected on cell block preparation in a single case, corresponding to its lung primary. The literature search yielded 84 cases of metastatic malignancies, with lung carcinomas comprising of 3.6%-33.3% in case series of metastatic malignancies.
    Conclusion: Metastatic adenocarcinoma of lung and PTC share significant cytomorphological and immunocytochemical similarities. A high degree of caution, meticulous clinico-cytological assessment and prudent use of ancillary techniques is necessary to avoid potential misdiagnosis.
    MeSH term(s) Adenocarcinoma/diagnosis ; Adenocarcinoma/pathology ; Biomarkers, Tumor ; Carcinoma/pathology ; Carcinoma, Papillary/pathology ; Chromatin ; ErbB Receptors ; Humans ; Lung/pathology ; Lung Neoplasms/pathology ; Thyroglobulin ; Thyroid Cancer, Papillary/diagnosis ; Thyroid Neoplasms/pathology
    Chemical Substances Biomarkers, Tumor ; Chromatin ; Thyroglobulin (9010-34-8) ; ErbB Receptors (EC 2.7.10.1)
    Language English
    Publishing date 2022-07-26
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 1034190-0
    ISSN 1365-2303 ; 0956-5507 ; 1350-4037
    ISSN (online) 1365-2303
    ISSN 0956-5507 ; 1350-4037
    DOI 10.1111/cyt.13164
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Increased histological severity and chronicity of interface inflammation in anti-MDA5 dermatomyositis-A comparative dermatopathological analysis.

    Chan, Agnes Wai Sze / Cheung, Christina Man-Tung / Wong, Priscilla Ching-Han / Choi, Paul Cheung Lung / Ng, Joanna Ka Man / Li, Joshua Jing Xi

    International journal of rheumatic diseases

    2023  Volume 26, Issue 10, Page(s) 2031–2036

    Abstract: Anti-melanoma differentiation-associated gene 5 (MDA5) dermatomyositis is characterized by serological detection of anti-MDA5 antibody and rapidly progressive interstitial lung disease. In this study, the largest cohort of skin biopsies to date of anti- ... ...

    Abstract Anti-melanoma differentiation-associated gene 5 (MDA5) dermatomyositis is characterized by serological detection of anti-MDA5 antibody and rapidly progressive interstitial lung disease. In this study, the largest cohort of skin biopsies to date of anti-MDA5 dermatomyositis was reviewed and compared with cases of dermatomyositis with negative serology. Findings contribute to the histological diagnosis and evaluation of the severity of cutaneous inflammation in anti-MDA5 dermatomyositis. Skin biopsies collected over a 7-year period from individuals with clinically and histologically confirmed dermatomyositis with anti-MDA5 serology were reviewed. A total of 46 cases with 17 anti-MDA5 positive cases were retrieved. Patients with positive antibody were younger (53.7 vs. 60.6 years, p = .013). No differences in epidermal changes (p > .05) were observed. Pertaining to interface changes, anti-MDA5 dermatomyositis showed a higher degree of pigmentary incontinence (p = .014), suggesting increased and sustained cutaneous inflammation. Periodic acid-Schiff (PAS) stain demonstrated a greater degree of basement membrane thickening (p = .045). Other parameters, including dermal inflammation, dermal mucin deposition and vasculitic/vasculopathic features did not show statistical difference between anti-MDA5 positive and negative dermatomyositis (p > .05). Findings suggest increased cutaneous inflammation for anti-MDA5 dermatomyositis. In skin biopsies, marked pigmentary incontinence or basement membrane thickening should raise suspicion of anti-MDA5 dermatomyositis.
    Language English
    Publishing date 2023-08-14
    Publishing country England
    Document type Journal Article
    ZDB-ID 2426924-4
    ISSN 1756-185X ; 1756-1841
    ISSN (online) 1756-185X
    ISSN 1756-1841
    DOI 10.1111/1756-185X.14866
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: A rare presentation of pemphigus vegetans as an isolated vegetative lesion-Review of histopathological clues and treatment effects in multiple biopsy specimens.

    Ng, Joanna Ka Man / Cheung, Christina Man-Tung / Choi, Paul Cheung Lung / Ip, Edric Chi-Ching / Li, Joshua Jing Xi / Chan, Agnes Wai Sze

    Journal of cutaneous pathology

    2023  Volume 50, Issue 3, Page(s) 201–208

    Abstract: Background: Pemphigus is a group of immunobullous dermatoses characterized by the presence of autoantibodies directed against adhesion molecules of keratinocytes, with pemphigus vegetans being the rarest form, accounting for 1%-2% of all cases of ... ...

    Abstract Background: Pemphigus is a group of immunobullous dermatoses characterized by the presence of autoantibodies directed against adhesion molecules of keratinocytes, with pemphigus vegetans being the rarest form, accounting for 1%-2% of all cases of pemphigus. Pemphigus vegetans is characterized by verrucous vegetative lesions in addition to vesiculobullous lesions.
    Methods: We report a rare case of pemphigus vegetans presenting as an isolated vegetative lesion in the groin 3 months prior to the development of blisters. Owing to the atypical presentation, multiple biopsies were performed before and after corticosteroid treatment.
    Results: Comparing the histopathology of pre-treatment and post-treatment biopsy specimens, the resolution of intraepidermal microabscesses, and reduction in intraepidermal and dermal inflammatory infiltrates, spongiosis and interface change, attributable to treatment, were noted. However, direct immunofluorescence showed persistent intracellular intraepidermal deposition of IgG and C3 2 weeks into treatment, despite near-complete resolution of blisters on clinical examination. Clinical regression of the vegetative lesion was noted only after 6 weeks into corticosteroid treatment, while histopathological evidence of treatment was apparent at the second week.
    Conclusion: The current case illustrates the importance of a liberal use of immunofluorescence studies in establishing the uncommon yet significant diagnosis of pemphigus vegetans, particularly for vegetative lesions that are persistent, in the intertriginous areas and/or in the setting of concurrent cutaneous or mucosal symptoms.
    MeSH term(s) Humans ; Pemphigus/pathology ; Blister/pathology ; Skin/pathology ; Adrenal Cortex Hormones/therapeutic use ; Biopsy
    Chemical Substances Adrenal Cortex Hormones
    Language English
    Publishing date 2023-01-04
    Publishing country United States
    Document type Case Reports
    ZDB-ID 187078-6
    ISSN 1600-0560 ; 0303-6987
    ISSN (online) 1600-0560
    ISSN 0303-6987
    DOI 10.1111/cup.14375
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Trichoblastic Carcinosarcoma Arising From the Vagina: A Case Report With Comprehensive Immunophenotypic Analysis.

    Li, Joshua Jing Xi / Ng, Joanna Ka Man / Choi, Paul Cheung Lung / Lee, Jacqueline Ho Sze / Yu, Mei-Yung

    International journal of surgical pathology

    2019  Volume 28, Issue 4, Page(s) 440–446

    Abstract: A 54-year-old woman presented with abdominal pain. Magnetic resonance imaging revealed an upper vaginal mass with no pelvic side wall involvement, nodal, or distant metastasis. Radical hysterectomy was performed. Histology showed trichoblastic carcinoma ... ...

    Abstract A 54-year-old woman presented with abdominal pain. Magnetic resonance imaging revealed an upper vaginal mass with no pelvic side wall involvement, nodal, or distant metastasis. Radical hysterectomy was performed. Histology showed trichoblastic carcinoma with hair follicle structures and malignant sarcomatous and carcinomatous components. Hair follicular differentiation was confirmed by positivity to hair follicle markers (Bcl-2, TLE1, CD56/NCAM, and TDAG51) and presence of CD10-positive trichogenic stroma. The tumor involved the vaginal muscularis only (FIGO [International Federation of Gynecology and Obstetrics] stage I) and was excised with clear margins. The patient remained disease free at 3-month follow-up. This is the first case of cutaneous-type carcinosarcoma reported in the vagina, highlighting the difference in histology, immunophenotype, and behavior compared with gynecologic carcinosarcomas.
    MeSH term(s) Biomarkers, Tumor/analysis ; Biomarkers, Tumor/metabolism ; Carcinosarcoma/diagnosis ; Carcinosarcoma/pathology ; Carcinosarcoma/surgery ; Diagnosis, Differential ; Female ; Hair Follicle/pathology ; Humans ; Hysterectomy ; Immunohistochemistry ; Magnetic Resonance Imaging ; Middle Aged ; Skin Neoplasms/diagnosis ; Vagina/diagnostic imaging ; Vagina/pathology ; Vagina/surgery ; Vaginal Neoplasms/diagnosis ; Vaginal Neoplasms/pathology ; Vaginal Neoplasms/surgery
    Chemical Substances Biomarkers, Tumor
    Language English
    Publishing date 2019-11-20
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 1336393-1
    ISSN 1940-2465 ; 1066-8969
    ISSN (online) 1940-2465
    ISSN 1066-8969
    DOI 10.1177/1066896919887803
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Hypoechoic liver in fetuses with trisomy 21.

    Omar, Puspa Marlinda / Lim, Wan Teng / Ting, Yuen Ha / Lao, Terence T / Law, Kwok Ming / Cheung, Alvin Ho Kwan / Ng, Joanna Ka Man / Leung, Tak Yeung

    The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians

    2018  Volume 32, Issue 19, Page(s) 3315–3317

    Abstract: The association between hypoechoic hepatomegaly in the third trimester and transient abnormal myelopoiesis (TAM) was reported previously in six fetuses with trisomy 21 (T21). We report a series of three cases of T21 in which hypoechoic liver (HL) was ... ...

    Abstract The association between hypoechoic hepatomegaly in the third trimester and transient abnormal myelopoiesis (TAM) was reported previously in six fetuses with trisomy 21 (T21). We report a series of three cases of T21 in which hypoechoic liver (HL) was found in the second trimester but without evidence of TAM on both hematological and histological examination. We postulate that the hypo-echogenicity may be due to liver congestion secondary to hemodynamic disturbances seen in T21 fetuses. All three cases had negative first trimester Down syndrome screening and one case was detected solely because of the isolated finding of HL. HL
    MeSH term(s) Abnormalities, Multiple/diagnosis ; Abnormalities, Multiple/pathology ; Adult ; Autopsy ; Down Syndrome/diagnosis ; Down Syndrome/pathology ; Female ; Fetus/pathology ; Hepatomegaly/congenital ; Hepatomegaly/diagnosis ; Hepatomegaly/pathology ; Humans ; Male ; Pregnancy ; Splenomegaly/complications ; Splenomegaly/diagnosis ; Splenomegaly/pathology ; Ultrasonography, Prenatal
    Language English
    Publishing date 2018-04-09
    Publishing country England
    Document type Case Reports ; Journal Article
    ZDB-ID 2077261-0
    ISSN 1476-4954 ; 1057-0802 ; 1476-7058
    ISSN (online) 1476-4954
    ISSN 1057-0802 ; 1476-7058
    DOI 10.1080/14767058.2018.1459556
    Database MEDical Literature Analysis and Retrieval System OnLINE

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