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Pak MG, Roh MS. Fibrin-associated large B-cell lymphoma arising in an endovascular graft: first case report in Korea. J Pathol Transl Med 2024; 58:87-90. [PMID: 38253476 PMCID: PMC10948249 DOI: 10.4132/jptm.2023.12.28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 12/09/2023] [Accepted: 12/28/2023] [Indexed: 01/24/2024] Open
Abstract
Fibrin-associated large B-cell lymphoma (FA-LBCL) is an extremely rare subtype of LBCL that consists of microscopic aggregates of atypical large B cells in the background of fibrin. Here, we report the first case of FA-LBCL in Korea. A 57-year-old male presented with a large amount of thrombus in the thoracic aorta during follow-up for graft replacement of the thoracoabdominal aorta 8 years prior. The removed thrombus, measuring 4.3 × 3.1 cm, histologically exhibited eosinophilic fibrinous material with several small clusters of atypical lymphoid cells at the periphery. The atypical cells were positive for CD20 by immunohistochemistry and for Epstein-Barr virus by in situ hybridization. The Ki-67 proliferation rate was 85%. The patient was still alive with no recurrence at the 7-year follow-up after thrombectomy. Although the diagnosis can be very difficult and challenging due to its paucicellular features, pathologists should be aware of FALBCL, which has likely been underestimated in routine evaluations of thrombi.
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Affiliation(s)
- Min Gyoung Pak
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
| | - Mee Sook Roh
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
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2
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Park S, Pak MG, Park JW. Villoglandular Adenocarcinoma of the Uterine Cervix: A Case Report. J Menopausal Med 2023; 29:150-153. [PMID: 38230601 PMCID: PMC10796205 DOI: 10.6118/jmm.23020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 11/30/2023] [Accepted: 12/11/2023] [Indexed: 01/18/2024] Open
Abstract
Cervical adenocarcinomas constitute for approximately 10%-20% of all invasive cervical cancers. Villoglandular adenocarcinomas (VGAs) are a rare subtype of cervical adenocarcinoma, representing approximately 5% of all cases of cervical adenocarcinomas. Herein, we report the case of a 49-year-old perimenopausal woman successfully treated for VGA. The patient presented to the hospital with a primary complaint of vaginal discharge persisting for 7 months with worsening symptoms. She had no underlying medical conditions or history of oral contraceptive use. A punch biopsy revealed an adenocarcinoma, and a human papillomavirus (HPV) test indicated positive for HPV-16. The patient underwent a radical hysterectomy with bilateral pelvic lymph node dissection, and a pathological diagnosis of VGA was established. After surgery, the patient underwent a 6-week course of concurrent chemoradiotherapy with cisplatin. During the 42 months of follow-up, no signs of disease recurrence or metastasis were observed. Because of the limitations of specimen acquisition, achieving a precise diagnosis through cervicovaginal cytology and punch biopsy is challenging. Instead, conization should be considered to prevent misdiagnosis.
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Affiliation(s)
- Soyoung Park
- Department of Obstetrics and Gynecology, Dong-A University, College of Medicine, Busan, Korea
| | - Min Gyoung Pak
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
| | - Jung-Woo Park
- Department of Obstetrics and Gynecology, Dong-A University, College of Medicine, Busan, Korea.
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3
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Lee DE, Pak MG, Kim SH, Chandler C. Kikuchi-Fujimoto Disease: A Case of Febrile Cervical Lymphadenopathy With Hematological Abnormalities. Cureus 2023; 15:e47533. [PMID: 37877108 PMCID: PMC10593182 DOI: 10.7759/cureus.47533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/23/2023] [Indexed: 10/26/2023] Open
Abstract
Kikuchi-Fujimoto disease (KFD), or histiocytic necrotizing lymphadenitis, is a benign but rare disorder associated with febrile cervical lymphadenopathy in young adults. Here, we discuss a case of a young female patient presenting with left tender cervical lymphadenopathy that progressed bilaterally with a fever of unknown origin. Laboratory parameters showed persistent leukopenia, especially neutropenia, which fluctuated with the degree of symptom severity. Two months were taken to confirm the diagnosis of KFD based on the histological interpretation of the lymph node biopsy. Supportive management with analgesics and paracetamol formed the main treatment. This case highlights the challenges and importance of diagnosing KFD to exclude other serious conditions such as lymphoma, tuberculosis, or lupus lymphadenitis that share similar clinical manifestations as KFD.
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Affiliation(s)
- Dong Eun Lee
- Department of Acute Medicine, University Hospitals Sussex NHS Foundation Trust, Worthing, GBR
| | - Min Gyoung Pak
- Department of Pathology, Dong-A University College of Medicine, Busan, KOR
| | - Sung-Hyun Kim
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, KOR
| | - Christopher Chandler
- Department of Acute Medicine, University Hospitals Sussex NHS Foundation Trust, Worthing, GBR
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Choi HY, Pak MG, Park JW. Fortuitously detected primary ovarian carcinoid tumor: A case report. Medicine (Baltimore) 2023; 102:e34391. [PMID: 37543794 PMCID: PMC10402998 DOI: 10.1097/md.0000000000034391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/07/2023] Open
Abstract
RATIONALE Carcinoid tumors, derived from the cells of the disseminated neuroendocrine system, are rare, slow-growing neuroendocrine neoplasms that display a relatively indolent disease course. The majority of carcinoids are found within the gastrointestinal tract and bronchopulmonary system. Primary ovarian carcinoids are rare and account for merely 1% of all carcinoid tumors. We describe our experience of a rare case of primary ovarian carcinoid, presenting as chronic constipation, with no other carcinoid symptoms such as flushing, diarrhea, and wheezing. PATIENT CONCERNS A 51-year-old postmenopausal woman with chronic constipation visited the clinic for routine check-up of her preexisting uterine fibroids. She had undergone hemorrhoidectomy 3 years ago. Physical examination revealed a soft abdomen without direct or rebound tenderness. Transvaginal ultrasonography revealed two subserosal fibroids, which had increased in size compared with previous ultrasonographic findings. A 3 cm hyperechoic mass was also detected in the right ovary. Her blood and urine tests were unremarkable, with no ascites in the pelvic cavity. She had a normal CA-125 level of 5.5 units/mL. DIAGNOSIS, INTERVENTIONS, AND OUTCOMES The patient underwent a robot-assisted hysterectomy and right salpingo-oophorectomy because of enlarging fibroids and the right ovarian mass. Subsequently, based on the pathological and immunohistochemical findings, she was diagnosed with a primary ovarian carcinoid. The mass consisted of the insular and trabecular types of tumor cells. It was positive for pan-cytokeratin and synaptophysin, and the Ki-67 proliferation index was less than 1%. A follow-up positron emission tomography-computed tomography revealed no distant metastasis. Six months postoperatively, the patient was doing well without any signs of recurrence. LESSONS Primary ovarian carcinoids without teratoma components are rare. It is crucial to make an accurate diagnosis based on the immunohistochemical staining results. Diagnosis in the early stages of the disease are associated with a favorable prognosis, but regular follow-up is mandatory.
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Affiliation(s)
- Hwa Yeon Choi
- Department of Obstetrics and Gynecology, Dong-A University College of Medicine, Busan, Republic of Korea
| | - Min Gyoung Pak
- Department of Pathology, Dong-A University College of Medicine, Busan, Republic of Korea
| | - Jung-Woo Park
- Department of Obstetrics and Gynecology, Dong-A University College of Medicine, Busan, Republic of Korea
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5
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Kim TH, Kim ST, Pak MG, Park WC. Long-term Clinical Course of Amniotic Membrane after Permanent Amniotic Membrane Transplantation. J Korean Ophthalmol Soc 2023. [DOI: 10.3341/jkos.2023.64.3.185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Purpose: To investigate the long-term clinical outcomes of transplanted amniotic membrane in patients who underwent permanent amniotic membrane transplantation (P-AMT) on cornea.Methods: From April 2014 to March 2021, medical records and digital photographs of 68 patients (72 eyes) who underwent P-AMT were analyzed retrospectively. The duration of complete re-epithelization of cornea and wearing therapeutic contact lense (T-lens) after surgery were investigated, the size of preserved amniotic membrane (AM) excluding the melted portion was analyzed using the Image J program every year up to 6 years after surgery, and it was compared by dividing into a single-layer group and a double-layer group. In addition, when the AM melts, the cause, time, and related factors of melting were analyzed.Results: The average duration to complete re-epithelialization after surgery was 12.2 ± 11.0 days, and T-lens were worn on average up to 8.7 ± 8.5 months after surgery. In total group, the average ratio of preserved AM annually up to 6 years after surgery was 94.9%, 94.3%, 97.8%, 96.4%, 95.8%, 91.6% respectively, and there was no significant difference between the single-layer group and the double-layer group. AM melting appeared in 38.9% (28 eyes) of the total group, and melting was first observed on average 16.4 ± 17.2 months after surgery. The formation and rupture of bullae was the most common cause of melting at 71.4% (20 eyes), and there were no statistically significant related factors involved in the formation of bullae.Conclusions: In the case of P-AMT performed in various diseases of the cornea, the transplanted AM is partially melt but considered to be well preserved up to 6 years after surgery to form a stable ocular surface.
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Kim HJ, Kwon H, Lim K, Cho J, Pak MG, Kim KW. Ciliated Foregut Cyst and Accessory Spleen in the Pancreas: A Case Report and Literature Review. J Korean Soc Radiol 2023; 84:263-269. [PMID: 36818709 PMCID: PMC9935956 DOI: 10.3348/jksr.2022.0083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 07/26/2022] [Accepted: 09/20/2022] [Indexed: 01/21/2023]
Abstract
Ciliated foregut cyst is a relatively rare disease; thus, most reports are in the form of case studies. This benign cyst is usually found in the mediastinum and account for approximately 20% of all mediastinal masses. However, it is rarely found in the hepatobiliary and peripancreatic regions. Approximately 20 cases of ciliated foregut cysts involving the pancreas have been reported in the Enlgish literature. Here, we present a case of ciliated foregut cyst that occurred in the tail of the pancreas in a 29-year-old female. The patient's ultrasonography, CT, and MRI findings are presented, along with a review of the literature.
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Affiliation(s)
- Hyun Jin Kim
- Department of Radiology, Dong-A University College of Medicine, Busan, Korea
| | - Heejin Kwon
- Department of Radiology, Dong-A University College of Medicine, Busan, Korea
| | - Kyungjae Lim
- Department of Radiology, Dong-A University College of Medicine, Busan, Korea
| | - Jinhan Cho
- Department of Radiology, Dong-A University College of Medicine, Busan, Korea
| | - Min Gyoung Pak
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
| | - Kwan Woo Kim
- Department of Surgery, Dong-A University College of Medicine, Busan, Korea
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Yun YB, Kim YG, Pak MG, Kim S. A Case of Nasal NK T-Cell Lymphoma Presenting With Persistent Epiphora. J Rhinol 2022. [DOI: 10.18787/jr.2022.00415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
Abstract
Nasal type natural killer/T-cell lymphoma (NNKTL) is a rare and aggressive subtype of non-Hodgkin lymphoma originating from a natural killer cell or γδ T cell infected by the Epstein-Barr virus. It usually invades the aerodigestive tract and can rapidly destroy the paranasal sinus, hard palate, and central nervous system. NNKTL is often mistaken for benign conditions such as chronic hypertrophic rhinosinusitis or mucosal inflammatory change, as endoscopic findings of NNKTL presenting nasal mucosal hypertrophy are similar to endoscopic findings for these abovementioned benign conditions. Here, the authors report the diagnosis and examination of NNKTL in a 58-year-old male patient who visited our clinic for nasal cavity discomfort after he underwent a dacryocystorhinostomy to treat dacryocystitis.
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Choi HY, Pak MG, Park JW. Myeloid sarcoma arising at the uterine cervix in a patient with intestinal Behçet's disease and concurrent myelodysplastic syndrome: A case report. Medicine (Baltimore) 2022; 101:e31559. [PMID: 36316914 PMCID: PMC9622627 DOI: 10.1097/md.0000000000031559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
INTRODUCTION Myeloid sarcoma (MS) is an extramedullary tumor that consists of myeloblasts and rarely involves the female reproductive organs. Intestinal Behçet's disease (BD) is a chronic, inflammatory illness that is often associated with myelodysplastic syndrome (MDS). When MDS is diagnosed, some patients with intestinal BD experience synchronous gastrointestinal flares. CASE PRESENTATION We report the case of a 49-year-old woman who presented with vaginal bleeding and an incidentally identified MS in the uterine cervix. Subsequent bone marrow biopsy showed simultaneous MDS without chromosomal abnormalities. This is the first reported case of concomitant MS, myelodysplastic disease, and intestinal BD. CONCLUSIONS The accurate diagnosis of MSs that develop at non-predominant sites is crucial for a positive patient prognosis. MDS should be suspected in patients with a history of intestinal BD diagnosed with MS.
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Affiliation(s)
- Hwa Yeon Choi
- Department of Obstetrics and Gynecology, Dong-A University College of Medicine, Seo-gu, Busan, Republic of Korea
| | - Min Gyoung Pak
- Department of Pathology, Dong-A University College of Medicine, Seo-gu, Busan, Republic of Korea
| | - Jung-Woo Park
- Department of Obstetrics and Gynecology, Dong-A University College of Medicine, Seo-gu, Busan, Republic of Korea
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Kim D, Kim S, Pak MG, Bae WY. A Case of Small Cell Carcinoma Originated from Sphenoid Sinus in Patient with Recurrent Pituitary Tumor. J Rhinol 2021. [DOI: 10.18787/jr.2021.00351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Small cell carcinoma (SmCC) is a type of neuroendocrine tumor commonly originating in the lung, with only about 2-4% of cases arising at extrapulmonary sites. Extrapulmonary SmCC of the head and neck has a poor prognosis and a high rate of distant metastasis. The paranasal sinus is a rare location for extrapulmonary SmCC and only a few related papers have been published to date. We report a rare case of SmCC originating from the sphenoid sinus in a patient with a recurrent pituitary tumor with a literature review.
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10
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Jang EJ, Kim KW, Kang SH, Pak MG, Han SH. Inflammatory myofibroblastic tumors arising from pancreas head and peri-splenic area mimicking a malignancy. Ann Hepatobiliary Pancreat Surg 2021; 25:287-292. [PMID: 34053934 PMCID: PMC8180395 DOI: 10.14701/ahbps.2021.25.2.287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 03/04/2021] [Accepted: 03/04/2021] [Indexed: 11/17/2022] Open
Abstract
Inflammatory myofibroblastic tumors (IMTs) are a rare chronic inflammatory disease with unclear pathogenesis and pathological features that are not those of a malignant tumor. It is difficult to differentially diagnose them without surgical excision because of their unpredictable clinical behavior, which ranges from benign to locally invasive aggressiveness. We report two cases of IMTs that were diagnosed after surgery. In one case, the IMT originated in peri-splenic area in a 63-year-old female patient. The other case involved a 48-year-old female patient who suffered from an IMT of the head of the pancreas. Both of these cases did not require further treatment based on histological findings, and there has been no evidence of recurrence or metastasis so far. These cases show that the primary choice for the exact diagnosis and proper treatment of IMTs is complete surgical resection.
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Affiliation(s)
- Eun Jeong Jang
- Department of Surgery, Dong-A University Hospital, Dong-A University College of Medicine, Busan, Korea
| | - Kwan Woo Kim
- Department of Surgery, Dong-A University Hospital, Dong-A University College of Medicine, Busan, Korea
| | - Sung Hwa Kang
- Department of Surgery, Dong-A University Hospital, Dong-A University College of Medicine, Busan, Korea
| | - Min Gyoung Pak
- Department of Pathology, Dong-A University Hospital, Dong-A University College of Medicine, Busan, Korea
| | - Song Hee Han
- Department of Pathology, Dong-A University Hospital, Dong-A University College of Medicine, Busan, Korea
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11
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Pak MG, Roh MS. Influence of Cold Ischemia Time and Storage Period on DNA Quality and Biomarker Research in Biobanked Colorectal Cancer Tissues. KMJ 2020. [DOI: 10.7180/kmj.2020.35.1.26] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Objectives Biobanking plays an important role in future research. Assessment and control of the preanalytical variables of biobanked tissues are fundamentals for the optimal use of biospecimens. Methods Forty-five colorectal cancer (CRC) tissues stored at −80°C in Bio-Resource Bank were evaluated to define the influence of cold ischemia time (CIT) and storage period (SP) on DNA quality in biobanked tissues. Three CITs (less than 30 minutes (CIT-1), 30–45 minutes (CIT-2), and 45–60 minutes (CIT-3)) and three SPs (less than 1 year (SP-1), 2–3 years (SP-2), and 4–5 years (SP-3)) were chosen. NanoDrop spectrophotometer was used to determine the 260/280 ratio for DNA purity. DNA integrity was analyzed by a UV transilluminator following electrophoresis on 2% agarose gel. To evaluate the practical usability of DNA for biomarker research, KRAS mutation status was assessed by PCR amplification. Results All DNA specimens had a 260/280 ratio ranging between 1.8 and 2.0 with the exception of one specimen (CIT-2/SP-2 group). For DNA integrity, DNA appeared as a compact, high-molecular-weight band with no or scanty low-molecular-weight smears. The concordance of KRAS mutation status between paired biobanked frozen tissues and formalin-fixed paraffin-embedded tissues was 100%. DNA remained stable in CRC tissues kept at room temperature for up to 1 hour and long-term storage up to 5 years. Conclusions Storage conditions of our biobank are suitable for long-term (at least five years) specimen preservation with high DNA quality. These results have practical implications that could affect banking guidelines.
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Lee JS, Roh MS, Lee HW, Lee EH, Pak MG, Kim K, Nam HY, Kim KM, Jung SB. Prognostic significance of glucose-related protein 94 in colorectal cancer. Pathol Res Pract 2020; 216:153013. [PMID: 32534715 DOI: 10.1016/j.prp.2020.153013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/27/2020] [Accepted: 05/10/2020] [Indexed: 12/27/2022]
Abstract
AIMS The expression of glucose-related protein 94 (GRP94), a member of the heat shock protein 90 family, was correlated with a variety of clinicopathological factors and patient survival in a large colorectal cancer (CRC) cohort. We aimed to elucidate the role of GRP94 in the prognosis of CRC patients. METHODS Tissue microarray blocks were generated from 709 CRC samples and immunohistochemically stained for GRP94. RESULTS Of the 709 tumours, 164 (23.1%) and 545 (76.9%) were classified in the low and high expression groups, respectively. GRP94 expression was high in CRC cases with larger tumours (p = 0.005) and advanced pT stage (p = 0.021). GRP94 expression was higher in females than males (p = 0.024). In univariate and multivariate survival analyses, high GRP94 expression was unexpectedly associated with better overall survival in CRC patients younger than 65 years of age (p = 0.001) CONCLUSION: Our conflicting results indicate that GRP94 has the ability to switch between oncogenic and tumour-suppressive roles depending on the conditions and microenvironment of the tumour cells. Furthermore, GRP94 could be a candidate biomarker to predict better prognosis in CRC patients.
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Affiliation(s)
- Jae Seok Lee
- Department of Pathology, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, South Korea
| | - Mee Sook Roh
- Department of Pathology, Dong-A University College of Medicine, Busan, South Korea
| | - Hyoun Wook Lee
- Department of Pathology, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, South Korea.
| | - Eun Hee Lee
- Department of Pathology, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, South Korea
| | - Min Gyoung Pak
- Department of Pathology, Dong-A University College of Medicine, Busan, South Korea
| | - Kyungeun Kim
- Department of Pathology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Hyun-Yeol Nam
- Department of Nuclear Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, South Korea
| | - Kwang Min Kim
- Division of Gastroenterology, Department of Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, South Korea
| | - Sang Bong Jung
- Department of Clinical Laboratory Science, Dong-Eui Institute of Technology, Busan, South Korea
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13
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Lim K, Cho J, Pak MG, Kwon H. Inflammatory Myofibroblastic Tumor of the Pancreas: A Case Report and Literature Review. J Korean Soc Radiol 2020; 81:1497-1503. [PMID: 36237724 PMCID: PMC9431835 DOI: 10.3348/jksr.2020.0101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/03/2020] [Accepted: 06/11/2020] [Indexed: 12/03/2022]
Abstract
Inflammatory myofibroblastic tumors (IMTs) are rare. They are characterized by myofibroblastic spindle cell proliferation with a varying degree of inflammatory cell infiltration. IMT can occur in any anatomic location but has been reported in the lung, mesentery, and omentum, mainly in children or young adults. It rarely occurs in the pancreas and is often difficult to distinguish from other tumors, including some malignant ones. Therefore, it can be challenging to make a radiological diagnosis of IMT. Here, we present a case of IMT that occurred in the pancreas head of a middle-aged female. The patient’s ultrasonography, computed tomography, and magnetic resonance imaging findings are presented along with a review of the literature.
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Affiliation(s)
- Kyungjae Lim
- Department of Radiology, Dong-A University College of Medicine, Busan, Korea
| | - Jinhan Cho
- Department of Radiology, Dong-A University College of Medicine, Busan, Korea
| | - Min Gyoung Pak
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
| | - Heejin Kwon
- Department of Radiology, Dong-A University College of Medicine, Busan, Korea
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14
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Jang HY, Lee JY, Kim SH, Pak MG, Lee JH. [Distal Ileal Lymphoma Presenting Ileocecal Intussusception with Spontaneous Reduction]. Korean J Gastroenterol 2019; 74:291-294. [PMID: 31765557 DOI: 10.4166/kjg.2019.74.5.291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 09/04/2019] [Accepted: 09/08/2019] [Indexed: 11/03/2022]
Abstract
Intussusception is a rare disease in adults. A demonstrable etiology is found in approximately 85% of all cases, and approximately 40% of them are caused by malignant tumors. A 65-year-old patient visited the outpatient department with mild abdominal pain without other symptoms. The initial laboratory test and simple X-ray showed normal findings. CT revealed intussusception in the ileocecal area. The initial colonoscopic biopsy revealed atypical cells. Follow up colonoscopy showed spontaneous reduction of the intussusception. Diffuse large B-cell lymphoma was suspected in the second colonoscopic biopsy. An elective operation was performed. This case reports a case of a spontaneous reduction of adult intussusception with a brief review of literature.
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Affiliation(s)
- Hye Yoon Jang
- Division of Gastroenterology, Department of Internal Medicine, Dong-A University Hospital, Busan, Korea
| | - Jong Yoon Lee
- Division of Gastroenterology, Department of Internal Medicine, Dong-A University Hospital, Busan, Korea
| | - Suk Hyun Kim
- Division of Gastroenterology, Department of Internal Medicine, Dong-A University Hospital, Busan, Korea
| | - Min Gyoung Pak
- Department of Pathology, Dong-A University Hospital, Busan, Korea
| | - Jong Hoon Lee
- Division of Gastroenterology, Department of Internal Medicine, Dong-A University Hospital, Busan, Korea
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Pak MG, Roh MS. Cell-blocks are suitable material for programmed cell death ligand-1 immunohistochemistry: Comparison of cell-blocks and matched surgical resection specimens in lung cancer. Cytopathology 2019; 30:578-585. [PMID: 31209979 PMCID: PMC6899539 DOI: 10.1111/cyt.12743] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 05/13/2019] [Accepted: 06/08/2019] [Indexed: 12/16/2022]
Abstract
Objective Programmed cell death ligand‐1 (PD‐L1) has emerged as a predictive biomarker in lung cancer. PD‐L1 immunohistochemistry (IHC) assay predicts the response to immunotherapy, but cytology specimens are often the only samples available in a considerable proportion of advanced lung cancer patients. We delineate practical feasibility and efficacy of cytology cell‐block (CB) specimens for PD‐L1 expression and concordance between cytology CBs and surgical resection specimens. Methods In total, 58 eligible patients with primary lung cancer who received computed tomography‐guided percutaneous needle aspiration and surgery were included. PD‐L1 IHC (clone SP263) was performed on CBs prepared from residual liquid‐based cytology material and matched surgical resection specimens. PD‐L1 positive tumour cell proportion was categorised in four score groups: (a) <1%; (b) ≤1% to <10%; (c) ≤10% to <50%, (d) ≥50%. Results Comparison of PD‐L1 expression in cytology CBs and matched surgical resection specimens showed a high concordance (κ value 0.65). According to the therapeutic guideline of immunotherapeutic agents, a positive percent agreement was 94.34%, and a negative percent agreement was 100% at a cut‐off value for positivity of 1% PD‐L1 expression. There was a significant difference observed with regard to rates of PD‐L1 positivity when comparing smoking history (P = 0.02), age (P = 0.04) and pathological TNM stage (P = 0.04). Conclusions The results show that cytology CBs evaluated for PD‐L1 IHC assay have high concordance with matched surgical resection specimens and can be used for assessing PD‐L1 expression. Also, we propose that CBs are suitable materials for evaluating PD‐L1 expression while simultaneously performing both diagnostic and molecular tests. This study showed that cytology cell‐blocks (CBs) evaluated for PD‐L1 immunohistochemistry (IHC) assay have high concordance with matched surgical resection specimens and can be used for assessing PD‐L1 expression. Also, we propose that CBs are suitable materials for evaluating PD‐L1 expression while simultaneously performing both diagnostic and molecular tests.
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Affiliation(s)
- Min Gyoung Pak
- Department of Pathology, Dong-A University College of Medicine, Seo-gu, Busan, South Korea
| | - Mee Sook Roh
- Department of Pathology, Dong-A University College of Medicine, Seo-gu, Busan, South Korea
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Kim K, Lee HW, Lee EH, Park MI, Lee JS, Kim MS, Kim K, Roh MS, Pak MG, Oh JE, Kim KM, Lee JW, Kim TG, Nam HY. Differential expression of HSP90 isoforms and their correlations with clinicopathologic factors in patients with colorectal cancer. Int J Clin Exp Pathol 2019; 12:978-986. [PMID: 31933908 PMCID: PMC6945153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 12/23/2018] [Indexed: 06/10/2023]
Abstract
Heat shock protein 90 (HSP90), a molecular chaperone, plays critical roles in cellular protection against various stressful stimuli and in the regulation of cellular growth and apoptosis. HSP90 has four human isoforms; HSP90α, HSP90β, glucose related protein 94 (GRP94), and tumor necrosis factor (TNF) receptor-associated protein 1 (TRAP1). We evaluated the differential expression of these HSP90 isoforms in colorectal cancer (CRC) and correlated their expression levels with clinicopathological factors and patient survival rates. We performed immunohistochemical staining for HSP90α, HSP90β, GRP94, and TRAP1 in 129 CRC tumor samples and found that HSP90α expression was significantly associated with advanced pT stage (P = 0.011) and shorter recurrence-free survival (RFS) (P = 0.010), whereas GRP94 expression was correlated with low grade (P = 0.029) and better RFS (P < 0.001). HSP90β and TRAP1 had no prognostic impact, although HSP90β expression was positively correlated with tumor size (P = 0.008). Based on our results, HSP90α and GRP94 are potential prognostic biomarkers of CRC. In addition, the differences in expression and functional activities among four HSP90 isoforms imply that isoform selectivity should be seriously considered when HSP90 inhibitors are studied or adopted for the treatment of CRC.
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Affiliation(s)
- Kisu Kim
- Department of Pathology, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan UniversityChangwon, South Korea
| | - Hyoun Wook Lee
- Department of Pathology, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan UniversityChangwon, South Korea
| | - Eun Hee Lee
- Department of Pathology, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan UniversityChangwon, South Korea
| | - Moon-Il Park
- Department of Pathology, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan UniversityChangwon, South Korea
| | - Jae Seok Lee
- Department of Pathology, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan UniversityChangwon, South Korea
| | - Mee-Seon Kim
- Department of Pathology, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan UniversityChangwon, South Korea
| | - Kyungeun Kim
- Department of Pathology, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan UniversitySeoul, Korea
| | - Mee Sook Roh
- Department of Pathology, Dong-A University College of MedicineBusan, South Korea
| | - Min Gyoung Pak
- Department of Pathology, Dong-A University College of MedicineBusan, South Korea
| | - Ji Eun Oh
- Division of Gastroenterology, Department of Medicine, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan UniversityChangwon, South Korea
| | - Kwang Min Kim
- Division of Gastroenterology, Department of Medicine, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan UniversityChangwon, South Korea
| | - Jung Won Lee
- Division of Gastroenterology, Department of Medicine, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan UniversityChangwon, South Korea
| | - Tae Gyu Kim
- Department of Radiation Oncology, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan UniversityChangwon, South Korea
| | - Hyun-Yeol Nam
- Department of Nuclear Medicine, Samsung Changwon Hospital, School of Medicine, Sungkyunkwan UniversityChangwon, South Korea
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Yeong SJ, Pak MG, Lee HW, Ha SY, Roh MS. Prognostic Utility of Histological Growth Patterns of Colorectal Lung Oligometastasis. J Pathol Transl Med 2018; 52:98-104. [PMID: 29433159 PMCID: PMC5859245 DOI: 10.4132/jptm.2017.12.27] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 12/10/2017] [Accepted: 12/27/2017] [Indexed: 12/26/2022] Open
Abstract
Background Patients with resectable colorectal lung oligometastasis (CLOM) demonstrate a heterogeneous oncological outcome. However, the parameters for predicting tumor aggressiveness have not yet been fully investigated in CLOM. This study was performed to determine the prognostic value of histological growth patterns in patients who underwent surgery for CLOM. Methods The study included 92 patients who were diagnosed with CLOM among the first resection cases. CLOMs grow according to three histological patterns: aerogenous, pushing, and desmoplastic patterns. The growth patterns were evaluated on archival hematoxylin and eosin–stained tissue sections. Results The aerogenous pattern was found in 29.4% (n=27) of patients, the pushing pattern in 34.7% (n=32), the desmoplastic pattern in 6.5% (n=6), and a mix of two growth patterns in 29.4% (n=27). The size of the aerogenous pattern was significantly smaller than that of metastases with other patterns (p=.033). Kaplan-Meier analysis demonstrated that patients showing an aerogenous pattern appeared to have a poorer prognosis, which was calculated from the time of diagnosis of the CLOM (p=.044). The 5-year survival rate from the diagnosis of colorectal cancer tended to be lower in patients with an aerogenous pattern than in those who had a non-aerogenous pattern; however, the difference was marginally significant (p=.051). In the multivariate Cox analysis, the aerogenous pattern appeared as an independent predictor of poor overall survival (hazard ratio, 3.122; 95% confidence interval, 1.196 to 8.145; p=.020). Conclusions These results suggest that the growth patterns may play a part as a histology-based prognostic parameter for patients with CLOM.
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Affiliation(s)
- Son Jae Yeong
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
| | - Min Gyoung Pak
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
| | - Hyoun Wook Lee
- Department of Pathology, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
| | - Seung Yeon Ha
- Department of Pathology, Gachon University of Medicine and Science, Incheon, Korea
| | - Mee Sook Roh
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
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Shin YK, Jang SY, Yun SH, Choi YY, Yoon BA, Jo YR, Park SY, Pak MG, Park JI, Park HT. Cooperative interaction of hepatocyte growth factor and neuregulin regulates Schwann cell migration and proliferation through Grb2-associated binder-2 in peripheral nerve repair. Glia 2017; 65:1794-1808. [PMID: 28722233 DOI: 10.1002/glia.23195] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 06/29/2017] [Accepted: 06/30/2017] [Indexed: 12/27/2022]
Abstract
The sequential reactive changes in Schwann cell phenotypes in transected peripheral nerves, including dedifferentiation, proliferation and migration, are essential for nerve repair. Even though the injury-induced migratory and proliferative behaviors of Schwann cells resemble epithelial and mesenchymal transition (EMT) in tumors, the molecular mechanisms underlying this phenotypic change of Schwann cells are still unclear. Here we show that the reactive Schwann cells exhibit migratory features dependent on the expression of a scaffolding oncoprotein Grb2-associated binder-2 (Gab2), which was transcriptionally induced by neuregulin 1-ErbB2 signaling following nerve injury. Injury-induced Gab2 expression was dependent on c-Jun, a transcription factor critical to a Schwann cell reprograming into a repair-type cell. Interestingly, the injury-induced activation (tyrosine phosphorylation) of Gab2 in Schwann cells was regulated by an EMT signal, the hepatocyte growth factor-c-Met signaling, but not by neuregulin 1. Gab2 knockout mice exhibited a deficit in nerve repair after nerve transection due to limited Schwann cell migration. Furthermore, Gab2 was required for the proliferation of Schwann cells following nerve injury and in vitro, and was over-expressed in human Schwann cell-derived tumors. In contrast, the tyrosine phosphorylation of Gab1 after nerve injury was principally regulated by the neuregulin 1-ErbB2 signaling and was indispensable for remyelination after crush injury, but not for the proliferation and migration of Schwann cells. Our findings indicate that Gab1 and Gab2 in Schwann cells are nonredundant and play a crucial role in peripheral nerve repair.
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Affiliation(s)
- Yoon Kyoung Shin
- Department of Physiology, Peripheral Neuropathy Research Center (PNRC), College of Medicine, Dong-A University, Busan, South Korea
| | - So Young Jang
- Department of Physiology, Peripheral Neuropathy Research Center (PNRC), College of Medicine, Dong-A University, Busan, South Korea
| | - Seoug Hoon Yun
- Department of Biochemistry, Peripheral Neuropathy Research Center (PNRC), College of Medicine, Dong-A University, Busan, South Korea
| | - Yun Young Choi
- Department of Physiology, Peripheral Neuropathy Research Center (PNRC), College of Medicine, Dong-A University, Busan, South Korea
| | - Byeol-A Yoon
- Department of Physiology, Peripheral Neuropathy Research Center (PNRC), College of Medicine, Dong-A University, Busan, South Korea
| | - Young Rae Jo
- Department of Physiology, Peripheral Neuropathy Research Center (PNRC), College of Medicine, Dong-A University, Busan, South Korea
| | - So Young Park
- Department of Physiology, Peripheral Neuropathy Research Center (PNRC), College of Medicine, Dong-A University, Busan, South Korea
| | - Min Gyoung Pak
- Department of Pathology, College of Medicine, Dong-A University, Busan, South Korea
| | - Joo In Park
- Department of Biochemistry, Peripheral Neuropathy Research Center (PNRC), College of Medicine, Dong-A University, Busan, South Korea
| | - Hwan Tae Park
- Department of Physiology, Peripheral Neuropathy Research Center (PNRC), College of Medicine, Dong-A University, Busan, South Korea
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Lee S, Kim DH, Oh SY, Kim SY, Koh MS, Lee JH, Lee S, Kim SH, Kwak JY, Pak MG, Ju MH, Kim HJ, Jeong JS. Clinicopathologic significance of tumor microenvironment CD11c, and FOXP3 expression in diffuse large B-cell lymphoma patients receiving rituximab, cyclophosphamide, anthracycline, vincristine, and prednisone (R-CHOP) combination chemotherapy. Korean J Intern Med 2017; 32:335-344. [PMID: 26968188 PMCID: PMC5339461 DOI: 10.3904/kjim.2015.161] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Revised: 07/23/2015] [Accepted: 08/13/2015] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND/AIMS CD11c is a dendritic cell marker in humans, which potentially induces a cytotoxic effect on lymphoma cells. Forkhead boxP3 (FOXP3) is a regulator of T lymphocyte in the microenvironment of the lymphoma. The principal objective of this study was to determine whether the tumors' microenvironment expressions of CD11c and FOXP3 are predictive of clinical outcomes in diffuse large B-cell lymphoma (DLBCL) patients receiving treatment with rituximab, cyclophosphamide, anthracycline, vincristine, and prednisone (R-CHOP) combination chemotherapy. METHODS The study population consisted of 100 patients with DLBCL. The CD11c and FOXP3 expression in primary tumors' microenvironment were evaluated using an immunohistochemistry (IHC). RESULTS CD11c and FOXP3 expression positivity in microenvironment were 25% and 35%, respectively. Each one counted for 1 point. In CD11c and FOXP3 stain, positive was counted as 0 and negative was 1. The points were separated into low risk (0 to 1) and high risk (2) groups. Only the extranodal DLBCL patient group analysis conveyed significant differences of progression-free survival (p = 0.019) and overall survival (p = 0.039) between the two groups. CONCLUSIONS We can achieve possible clinical significance of lymphoma tumor microenvironments through CD11c and FOXP3 IHC stains in extranodal DLBCL patients receiving R-CHOP therapy.
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Affiliation(s)
- Seul Lee
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Dong Hyun Kim
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Sung Yong Oh
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
- Immune-Network Pioneer Research Center, Dong-A University College of Medicine, Busan, Korea
- Correspondence to Sung Yong Oh, M.D. Department of Internal Medicine, Dong-A University College of Medicine, 26 Daesingongwon-ro, Seo-gu, Busan 49201, Korea Tel: +82-51-240-2808 Fax: +82-51-246-5044 E-mail:
| | - So Yeon Kim
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Myeong Seok Koh
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Ji Hyun Lee
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Suee Lee
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Sung-Hyun Kim
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Jong-Young Kwak
- Immune-Network Pioneer Research Center, Dong-A University College of Medicine, Busan, Korea
- Department of Biochemistry, Dong-A University College of Medicine, Busan, Korea
| | - Min Gyoung Pak
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
| | - Mi Ha Ju
- Immune-Network Pioneer Research Center, Dong-A University College of Medicine, Busan, Korea
| | - Hyo-Jin Kim
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Jin Sook Jeong
- Immune-Network Pioneer Research Center, Dong-A University College of Medicine, Busan, Korea
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
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Pak MG, Koh HJ, Roh MS. Clinicopathologic significance of TRAP1 expression in colorectal cancer: a large scale study of human colorectal adenocarcinoma tissues. Diagn Pathol 2017; 12:6. [PMID: 28088229 PMCID: PMC5237536 DOI: 10.1186/s13000-017-0598-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 01/04/2017] [Indexed: 01/31/2023] Open
Abstract
Background Colorectal cancer is the major cause of cancer mortality, despite development of therapeutic strategies. The novel marker tumor necrosis factor receptor-associated protein 1 (TRAP1) is a mitochondrial heat shock protein that has been related to drug resistance and protection from apoptosis in colorectal cancer. This study aims to delineate the clinicopathologic significance of TRAP1 expression in colorectal cancer. Methods Seven-hundred and fourteen FFPE tissues were collected from colorectal cancer patients who underwent surgery from February 2002 to July 2011 at Dong-A University Medical Center, Busan, South Korea. We performed TRAP1 immunohistochemistry using tissue microarray, and divided into two groups, TRAP1 high expression group and low expression group. Statistical analysis was utilized to evaluate the association of TRAP1 with clinicopathologic characteristics and disease-specific survival of patients. Results High TRAP1 expression was observed in 564 cases (79%) and low expression was 150 cases (21%). TRAP1 expression was significantly increased in colorectal cancer with advanced pathologic T-stage compared with that in early T-stage (p = 0.008). By univariate survival analysis, high TRAP1 expression was significantly associated with worse disease-specific survival (p = 0.01). But, TRAP1 expression was marginally associated with lymph node involvement and tumor differentiation (p = 0.085, p = 0.082, respectively). Multivariate analysis indicated that TRAP1 expression (hazard ratio, 1.947; 95% CI, 1.270 to 2.984; p = 0.002), and pathologic T stage (hazard ratio, 3.190; 95% CI, 1.275 to 7.983; p = 0.013) were independent prognostic factors for colorectal adenocarcinomas. Conclusions Here, we found that overexpression of TRAP1 might contribute to tumor cell local invasion of colorectal cancer. The association between TRAP1 overexpression and worse disease-specific survival also suggested that TRAP1 protein expression might have oncogenic role. Consequently, our data demonstrated that TRAP1 expression was a good prognostic biomarker for depth of invasion and disease-specific survival in colorectal cancer.
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Affiliation(s)
- Min Gyoung Pak
- Department of Pathology, Dong-A University College of Medicine, 26 Daesingongwon-ro, Seo-gu, Busan, 49201, South Korea
| | - Hyong Jong Koh
- Department of Parmacology, Dong-A University College of Medicine, Busan, South Korea
| | - Mee Sook Roh
- Department of Pathology, Dong-A University College of Medicine, 26 Daesingongwon-ro, Seo-gu, Busan, 49201, South Korea.
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Abstract
Angiomatosis refers to a rare condition of large hamartomatous vascular lesions that extensively affect a region of the body or several different tissue types in a contiguous way. Several cases have been reported in the mediastinum. We experienced a histologically proven case of mediastinal angiomatosis in a 56-year-old woman that was incidentally detected as multiple conglomerated masses mimicking metastatic lymph nodes on chest radiography. Despite its rareness, our case emphasizes that pathologists and radiologists need to be aware of the rare diagnosis of angiomatosis in the mediastinum.
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Affiliation(s)
- Min Gyoung Pak
- 1 Department of Pathology, 2 Department of Thoracic and Cardiovascular Surgery, Dong-A University College of Medicine, Busan, South Korea ; 3 Department of Thoracic and Cardiovascular Surgery, Eulji University School of Medicine, Daejeon, South Korea ; 4 Department of Radiology, Dong-A University College of Medicine, Busan, South Korea
| | - Phil Jo Choi
- 1 Department of Pathology, 2 Department of Thoracic and Cardiovascular Surgery, Dong-A University College of Medicine, Busan, South Korea ; 3 Department of Thoracic and Cardiovascular Surgery, Eulji University School of Medicine, Daejeon, South Korea ; 4 Department of Radiology, Dong-A University College of Medicine, Busan, South Korea
| | - Won Suk Choi
- 1 Department of Pathology, 2 Department of Thoracic and Cardiovascular Surgery, Dong-A University College of Medicine, Busan, South Korea ; 3 Department of Thoracic and Cardiovascular Surgery, Eulji University School of Medicine, Daejeon, South Korea ; 4 Department of Radiology, Dong-A University College of Medicine, Busan, South Korea
| | - Eun Ju Kang
- 1 Department of Pathology, 2 Department of Thoracic and Cardiovascular Surgery, Dong-A University College of Medicine, Busan, South Korea ; 3 Department of Thoracic and Cardiovascular Surgery, Eulji University School of Medicine, Daejeon, South Korea ; 4 Department of Radiology, Dong-A University College of Medicine, Busan, South Korea
| | - Mee Sook Roh
- 1 Department of Pathology, 2 Department of Thoracic and Cardiovascular Surgery, Dong-A University College of Medicine, Busan, South Korea ; 3 Department of Thoracic and Cardiovascular Surgery, Eulji University School of Medicine, Daejeon, South Korea ; 4 Department of Radiology, Dong-A University College of Medicine, Busan, South Korea
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Pak MG, Lee HW, Roh MS. High nuclear expression of protein arginine methyltransferase-5 is a potentially useful marker to estimate submucosal invasion in endoscopically resected early colorectal carcinoma. Pathol Int 2015; 65:541-8. [PMID: 26248553 DOI: 10.1111/pin.12338] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 07/09/2015] [Indexed: 12/12/2022]
Abstract
Protein arginine methyltransferase-5 (PRMT5), a major type II arginine methyltransferase, is an important epigenetic modifier with oncogene-like properties because of its ability to repress the expression of tumor suppressor genes. We determined the correlations between PRMT5 expression or its cellular localization and malignant progression, with special reference to invasiveness, in colorectal adenomas and early colorectal carcinomas (CRCs). We performed immunohistochemical detection of PRMT5 in 108 endoscopically resected tissue samples (6 adenomas with low-grade dysplasia, 34 adenomas with high-grade dysplasia, 30 intramucosal carcinomas, and 38 submucosal invasive carcinomas). Early CRC (55 of 68, 80.9%) showed more frequent nuclear expression of PRMT5 than adenoma (15 of 40, 37.5%) (P < 0.001). Furthermore, high (strong staining in ≥ 50% of nuclei) nuclear expression of PRMT5 was more common in submucosal invasive carcinoma (21 of 38, 55.3%) than in intramucosal carcinoma (9 of 30, 30.0%) (P = 0.037). In conclusion, our data suggests that high nuclear expression of PRMT5 is a potentially useful marker for estimating submucosal invasion of early CRC in endoscopically resected specimens.
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Affiliation(s)
- Min Gyoung Pak
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
| | - Hyoun Wook Lee
- Department of Pathology, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
| | - Mee Sook Roh
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
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Pak MG, Lee CH, Lee WJ, Shin DH, Roh MS. Unique microRNAs in lung adenocarcinoma groups according to major TKI sensitive EGFR mutation status. Diagn Pathol 2015; 10:99. [PMID: 26170125 PMCID: PMC4501046 DOI: 10.1186/s13000-015-0339-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 06/27/2015] [Indexed: 11/29/2022] Open
Abstract
Background Lung cancer is the leading cause of cancer mortality, despite development of therapeutic strategies. Altered expression of microRNAs(miRNAs) in human malignancies have been well recognized as diagnostic and prognostic indicators, including lung cancer. This study aims to delineate the clinicopathologic significance of three unique miRNAs in adenocarcinoma according to major sensitive EGFR mutation status. Methods One-hundred and three formalin-fixed paraffin-embedded (FFPE) tissues were collected from lung adenocarcinoma patients who underwent surgery and epidermal growth factor receptor (EGFR) mutation study. The samples were divided into three groups which include EGFR mutation in exons 19 and 21 and wild type. Some representative cases from each group were profiled using commercial miRNA microarray plates. Three significant miRNAs were selected and they were validated by quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR), using collective cases of FFPE samples. Results We identified three microRNAs (miR-34c, miR-183, and miR-210) which showed significantly altered expression in all groups of lung adenocarcinoma by microarray study. Compared to normal control lung tissue, down-regulation of miR-34c and up-regulation of miR-183 and miR-210 were identified in caner groups (p < 0.05 for each). We validated the expression of three miRNAs by qRT-PCR. Expression levels of miR-34c, miR-183, and miR-210 were significantly different between normal control group and cancer groups (p = 0.034, <0.000, and 0.036, respectively). Moreover, expression level of miR-183 was significantly higher in EGFR mutation groups than wild type group (p = 0.028). Higher expression levels of three miRNAs were positively related to poor tumor differentiation. Increased expression of miR-183 was positively associated with lymphovascular invasion (p = 0.037). Aberrant expression of miR-210 was independently associated with T stage (p = 0.019), and TNM stage (p = 0.007). However, there was noted a limited statistical significance. In EGFR exon 19 mutation group, miR-34c high expression group showed poor overall survival than low expression one by univariate Kaplan-Meier method. (p = 0.035). Conclusions Here, we show that miR-34c may act as a potential tumor suppressor gene and miR-183 and miR-210 have a potential oncogenic role in pulmonary adenocarcinoma. This study also suggests different miRNA expression between EGFR mutation group and wild type group. Consequently, further studies of the biology of miRNAs may lead to diagnostic and prognostic biomarkers in pulmonary adenocarcinoma.
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Affiliation(s)
- Min Gyoung Pak
- Department of Pathology, Dong-A University Hospital, Busan, Republic of Korea.
| | - Chang-Hun Lee
- Department of Pathology and Medical Research Institute, Pusan National Univeristy Hospital, 1-10 Ami-dong, Seo-gu, Busan, 602-739, Republic of Korea.
| | - Woo-Jeong Lee
- Department of Pathology and Medical Research Institute, Pusan National Univeristy Hospital, 1-10 Ami-dong, Seo-gu, Busan, 602-739, Republic of Korea.
| | - Dong-Hoon Shin
- Department of Pathology, School of Medicine, Pusan National University, Yangsan, Republic of Korea.
| | - Mee-Sook Roh
- Department of Pathology, Dong-A University College of Medicine, Busan, Republic of Korea.
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Pak MG, Kim KB, Shin N, Kim WK, Shin DH, Choi KU, Sol MY. Ectomesenchymal chondromyxoid tumor in the anterior tongue: case report of a unique tumor. Korean J Pathol 2012; 46:192-6. [PMID: 23110000 PMCID: PMC3479778 DOI: 10.4132/koreanjpathol.2012.46.2.192] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 03/20/2011] [Accepted: 04/18/2011] [Indexed: 11/17/2022]
Abstract
Ectomesenchymal chondromyxoid tumor (ECMT) is a rare tumor, exclusively arising in the anterior tongue. Thirty-eight cases have been reported in the English literature. It usually presents as a sessile protrusion and shows round to spindle cells embedded in myxoid to chondroid stroma. Tumor cells are almost always positive for polyclonal glial fibrillary acidic protein (GFAP). We report our experience in the recent treatment of a case of ECMT, the third case in 3 years. The mass in the anterior tongue revealed characteristic morphologic features of ECMT and the expression of polyclonal GFAP. Although ECMT should be differentiated from other mesenchymal tumors including myoepithelioma, its clinical, morphological, and immunohistochemical features enable its diagnosis, especially when pathologists are aware of it.
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Affiliation(s)
- Min Gyoung Pak
- Department of Pathology, Pusan National University School of Medicine, Yangsan, Korea
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Pak MG, Shin DH, Lee CH, Lee MK. Significance of EpCAM and TROP2 expression in non-small cell lung cancer. World J Surg Oncol 2012; 10:53. [PMID: 22482828 PMCID: PMC3342122 DOI: 10.1186/1477-7819-10-53] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Accepted: 04/06/2012] [Indexed: 01/06/2023] Open
Abstract
Background The tumor-associated calcium signal transducer (TACSTD) genes, originally designated epithelial cell adhesion molecule (EpCAM) and TROP2, represent true oncogenes. Little is known about EpCAM and TROP2 gene expression in non-small cell lung carcinoma (NSCLC). This study evaluated EpCAM and TROP2 protein expression and clinicopathologic significance in cases of NSCLC. Methods Tissue microarray blocks acquired from 164 cases of NSCLC, including 100 cases of adenocarcinoma (AdC) and 64 of squamous cell carcinoma (SCC), were examined by immunohistochemical staining for EpCAM, and TROP2. The results were correlated with clinicopathologic data. Results EpCAM and TROP2 were significantly overexpressed in SCC than in AdC (P < 0.01). In AdC, EpCAM overexpression was closely related to sex, histologic grade, pathologic T stage, pathologic N stage, and TNM stage, and TROP2 overexpression was only related to histologic grade (P < 0.05, respectively). In SCC, correlations were evident between EpCAM overexpression and TNM stage (P = 0.01), and between TROP2 overexpression and pathologic T stage (P = 0.02). EpCAM overexpression showed no significance with overall survival in AdC and SCC patients. However, TROP2 overexpression in AdC had a positive influence on overall survival (P = 0.02) and disease-free survival (P = 0.03). In particular, AdC patients with stage II or III showed better overall survival (P = 0.05) and disease-free survival (P = 0.04). Conclusions While EpCAM and TROP2 show weak and non-complete membranous staining in normal bronchial epithelium and pneumocyte, their complete membranous expression in carcinoma suggests their role in carcinogenesis. EpCAM and TROP2 were more frequently overexpressed in SCC. EpCAM overexpression had no prognostic value in this study, but TROP2 overexpression showed better survival in AdC patients and might be a better prognostic marker in advanced stage AdC.
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Affiliation(s)
- Min Gyoung Pak
- Department of Pathology, School of Medicine, Pusan National University, Beomeo-ri, Mulgeum-eup, Yangsan 626-770, South Korea
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