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Jungsuk Ahn 3 Articles
Pediatric granular cell tumor in the posterior wall of the larynx extending to the trachea
Jungsuk Ahn, Na Rae Kim, Yong Han Sun
J Pathol Transl Med. 2020;54(4):336-339.   Published online April 15, 2020
  • 2,710 View
  • 108 Download
AbstractAbstract PDF
Granular cell tumor (GCT) is a slow-growing benign neoplasm that can be found in any organ. Pediatric laryngotracheal GCT is rare. We experienced a 6-year-old boy suffering from a barking cough and symptoms of stridor and croup for one month. Head and neck computed tomography revealed a protruding mass that occluded 60% of the airway lumen. Under the impression of hemangioma or papilloma, excision revealed a submucosal non-encapsulated mass. Histologically, the mass was composed of sheets of large polyhedralshaped tumor cells containing plump eosinophilic granular cytoplasm and centrally placed, small, bland-appearing nuclei. The tumor cells were positive for S-100 protein, and voluminous eosinophilic cytoplasm was stained by diastase-resistant periodic acid-Schiff. The present report describes a unique case of a huge pediatric laryngeal GCT extending to the subglottic trachea. We also review the clinical course of pediatric laryngotracheal GCT and emphasize the importance of diagnosing GCT in children.
A Case of Primary Subpleural Pulmonary Microcystic Myxoma Coincidentally Occurred with Pulmonary Adenocarcinoma
Jungsuk Ahn, Na Rae Kim, Seung Yeon Ha, Keun-Woo Kim, Kook Yang Park, Yon Mi Sung
J Pathol Transl Med. 2015;49(3):274-278.   Published online May 15, 2015
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  • 49 Download
  • 1 Citations


Citations to this article as recorded by  
  • Endobronchial Myxoma
    Arindam Mukherjee, Ritesh Agarwal, Sahajal Dhooria, Pawan Singh, Amanjit Bal, Harkant Singh, Inderpaul S. Sehgal
    Journal of Bronchology & Interventional Pulmonology.2018; 25(4): 335.     CrossRef
Cytologic Features of ALK-Positive Pulmonary Adenocarcinoma
Seung Yeon Ha, Jungsuk Ahn, Mee Sook Roh, Joungho Han, Jae Jun Lee, Boin Lee, Jun Yim
Korean J Pathol. 2013;47(3):252-257.   Published online June 25, 2013
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  • 28 Download
  • 9 Citations
AbstractAbstract PDF

The aim of this study was to determine the cytologic features of anaplastic lymphoma kinase (ALK) expressing pulmonary adenocarcinoma.


We analyzed the cytopathological findings of 15 cases of endobronchial ultrasound guided aspiration and a case of bronchial washing. These cases were selected based on the histomorphology of ALK-rearranged lung adenocarcinoma.


Cytology showed mucinous (81.3%) and hemorrhagic (50%) backgrounds. The cells were arranged in tubulopapillary or tubulocribriform patterns (93.8%), and clusters (56.3%) admixed with signet ring cell features (87.5%). The tumor cells were monotonous and uniform with vesicular nuclei and a small nucleolus.


The characteristic findings were sheets showing a tubulopapillary or tubulocribriform appearance, with vesicular nuclei and a bland chromatin pattern (p<0.001). Scattered signet ring cells were helpful in suggesting ALK-positive adenocarcinoma (p<0.001).


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  • Machine learning‐based gene alteration prediction model for primary lung cancer using cytologic images
    Shuhei Ishii, Manabu Takamatsu, Hironori Ninomiya, Kentaro Inamura, Takeshi Horai, Akira Iyoda, Naoko Honma, Rira Hoshi, Yuko Sugiyama, Noriko Yanagitani, Mingyon Mun, Hitoshi Abe, Tetuo Mikami, Kengo Takeuchi
    Cancer Cytopathology.2022; 130(10): 812.     CrossRef
  • Fine-needle aspiration cytology of non-small cell lung carcinoma: A paradigm shift
    Pranab Dey, Ratan Kumar Ghosh
    Diagnostic Cytopathology.2019; 47(4): 351.     CrossRef
  • Qualitative and quantitative cytomorphological features of primary anaplastic lymphoma kinase‐positive lung cancer
    Ryuko Tsukamoto, Hiroyuki Ohsaki, Sho Hosokawa, Yasunori Tokuhara, Shingo Kamoshida, Toshiko Sakuma, Tomoo Itoh, Chiho Ohbayashi
    Cytopathology.2019; 30(3): 295.     CrossRef
  • Primary signet-ring adenocarcinoma of the lung: A rare lung tumor
    Varun Rajpal, Rahul Kumar Sharma, Charul Dabral, Deepak Talwar
    South Asian Journal of Cancer.2019; 08(04): 257.     CrossRef
  • Cytological features in eight patients with ALK -rearranged lung cancer
    Naoto Kuroda, Masahiko Ohara, Yukari Wada, Kaori Yasuoka, Keiko Mizuno, Kenji Yorita, Chiho Obayashi, Kengo Takeuchi
    Diagnostic Cytopathology.2018; 46(6): 516.     CrossRef
  • Cytological markers for predicting ALK -positive pulmonary adenocarcinoma
    K. Miyata, S. Morita, H. Dejima, N. Seki, N. Matsutani, M. Mieno, F. Kondo, Y. Soejima, F. Tanaka, M. Sawabe
    Diagnostic Cytopathology.2017; 45(11): 963.     CrossRef
  • ALK-rearranged adenocarcinoma with extensive mucin production can mimic mucinous adenocarcinoma: clinicopathological analysis and comprehensive histological comparison with KRAS-mutated mucinous adenocarcinoma
    Yoon Jin Cha, Joungho Han, Soo Hyun Hwang, Tae Bum Lee, Hojoong Kim, Jea Ill Zo
    Pathology.2016; 48(4): 325.     CrossRef
  • Cytomorphological identification of advanced pulmonary adenocarcinoma harboring KRAS mutation in lymph node fine-needle aspiration specimens: Comparative investigation of adenocarcinoma with KRAS and EGFR mutations
    Dae Hyun Song, Boram Lee, Yooju Shin, In Ho Choi, Sang Yun Ha, Jae Jun Lee, Min Eui Hong, Yoon-La Choi, Joungho Han, Sang-Won Um
    Diagnostic Cytopathology.2015; 43(7): 539.     CrossRef
  • Comprehensive analysis of RET and ROS1 rearrangement in lung adenocarcinoma
    Seung Eun Lee, Boram Lee, Mineui Hong, Ji-Young Song, Kyungsoo Jung, Maruja E Lira, Mao Mao, Joungho Han, Jhingook Kim, Yoon-La Choi
    Modern Pathology.2015; 28(4): 468.     CrossRef

JPTM : Journal of Pathology and Translational Medicine