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Li Y, Yang X, Tao L, Zeng W, Zuo M, Li S, Wu L, Lin Y, Zhang Z, Yun J, Huang Y. Challenges in the Diagnosis of Epstein-Barr Virus-positive Inflammatory Follicular Dendritic Cell Sarcoma: Extremely Wide Morphologic Spectrum and Immunophenotype. Am J Surg Pathol 2023; 47:476-489. [PMID: 36574358 DOI: 10.1097/pas.0000000000002011] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Epstein-Barr virus (EBV)-positive inflammatory follicular dendritic cell (FDC) sarcoma (EBV + IFDCS) is a rare entity, and its histopathological characteristics have not been fully described. Here, we investigated the wide morphologic spectrum and immunophenotype of this tumor with the aim to help avoid misdiagnosis. Thirteen cases of EBV + IFDCS were retrospectively analyzed, combined with a review of 70 cases reported in the literature. The median age of patients was 49 (range, 29 to 67 y). Six patients were male and 7 were female. Most cases (92.3%, 12/13) occurred in the liver or spleen, and only 1 case affected an extra-hepatosplenic site (lung, 7.7%, 1/13). Tumors were assessed for a variety of histologic features and assigned to the following morphologic groups: classic type (53.8%, 7/13), lymphoma-like subtype (38.5%, 5/13), and hemangioma-like subtype (7.7%, 1/13). The classic type had distinct EBV-positive neoplastic cells with a fascicular or storiform growth pattern, variable lymphoplasmacytic infiltrates, and blood vessels. The lymphoma-like subtype had extremely prominent lymphoplasmacytic infiltrates (resembling marginal zone lymphoma with plasmacytoid differentiation) with singly dispersed distinct EBV-positive neoplastic cells, highlighted by in situ hybridization for EBV-encoded small RNA. The hemangioma-like subtype had extremely prominent blood vessels with hyaline and/or fibrinoid degeneration, singly dispersed distinct EBV-positive neoplastic cells, and limited lymphoplasmacytic infiltrates. Immunohistochemically, the neoplastic cells showed variable staining for FDC markers (CD21, CD35, CD23, and SSTR2) and the fibroblastic marker SMA, with the staining ranging from very focal to extensive. The number of EBV-positive neoplastic cells ranged from 80 to 400/HPF. All cases showed variable expression of PD-ligand 1 (PD-L1) (CPS: 5-90). IgG4-positive cells ranged from rare up to 100/HPF. Interestingly, 2 cases satisfied the criteria proposed in a previous study, mimicking IgG4-related disease. EBV + IFDCS is an entity with an extremely wide morphologic spectrum and immunophenotype. Awareness of the spectrum of morphologic presentations of this rare tumor, specifically the lymphoma-like subtype and hemangioma-like subtype, is important for accurate diagnosis.
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Affiliation(s)
- Yan Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine
- Department of Pathology, Sun Yat-sen University Cancer Center
| | - Xia Yang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine
- Department of Pathology, Sun Yat-sen University Cancer Center
| | - Lili Tao
- Department of Pathology, Peking University Shenzhen Hospital
| | - Weimei Zeng
- Guangdong No. 2 Provincial People's Hospital, Guangzhou, Guangdong
| | - Min Zuo
- Department of Pathology, Shenzhen People's Hospital, Shenzhen, Guangdong, China
| | - Shuo Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine
- Department of Pathology, Sun Yat-sen University Cancer Center
| | - Liyan Wu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine
- Department of Pathology, Sun Yat-sen University Cancer Center
| | - Yanshong Lin
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine
- Department of Pathology, Sun Yat-sen University Cancer Center
| | - Ziying Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine
- Department of Pathology, Sun Yat-sen University Cancer Center
| | - Jingping Yun
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine
- Department of Pathology, Sun Yat-sen University Cancer Center
| | - Yuhua Huang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine
- Department of Pathology, Sun Yat-sen University Cancer Center
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Ding F, Wang C, Xu C, Tang H. Case report: Hepatic inflammatory pseudotumor-like follicular dendritic cell sarcoma: A rare case and minireview of the literature. Front Med (Lausanne) 2022; 9:1002324. [PMID: 36425103 PMCID: PMC9679012 DOI: 10.3389/fmed.2022.1002324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 10/25/2022] [Indexed: 11/11/2022] Open
Abstract
Inflammatory pseudotumor (IPT)-like follicular dendritic cell sarcoma (FDCS) is a rare neoplasm referred to as the FDCS variant. Here we report a 66-year-old female patient suffering from hepatic IPT-like FDCS and summarize IPT-like FDCS reported in the literature. The patient presented with obvious abdominal pain without significant laboratory abnormalities and subsequently underwent surgical resection of a hepatic lesion. Postoperative pathological results demonstrated a vascular tissue-rich neoplasm (7.0-cm maximum diameter). The tumor cells expressed CD21 and CD35, and in situ hybridization detected Epstein–Barr virus-encoded RNA (EBER). Metastasis or recurrence was not detected during the 7-year follow-up.
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Affiliation(s)
- Fan Ding
- Center of Gallbladder Disease, East Hospital of Tongji University, Shanghai, China
- Institute of Gallstone Disease, Tongji University School of Medicine, Shanghai, China
| | - Chao Wang
- Department of Radiology, Nanxiang Hospital of Jiading District, Shanghai, China
| | - Chi Xu
- Department of Hepatic Surgery and Liver Transplantation Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- Organ Transplantation Institute, Sun Yat-sen University, Guangzhou, China
- Chi Xu,
| | - Hui Tang
- Department of Hepatic Surgery and Liver Transplantation Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- Organ Transplantation Institute, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Hui Tang,
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Zhu T, Gao P, Gao J, Liu X, Zhang X. A huge recurrent retroperitoneal inflammatory myofibroblastic tumor implicating renal and ureter: a case report. Transl Cancer Res 2022; 10:4565-4570. [PMID: 35116312 PMCID: PMC8798890 DOI: 10.21037/tcr-21-899] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 07/30/2021] [Indexed: 12/05/2022]
Abstract
Inflammatory myofibroblastic tumor (IMT) is a rare sarcoma with unique molecular characteristics. It also has typical fasciitis-like, dense spindle cells and hypocellular fibrous histologic patterns and can occur at any age. The etiology of IMT is unknown and a complete treatment and monitoring plan for IMT have not been developed. We have found a rare case about a huge recurrent IMT implicating renal and ureter. The patient was accompanied by a history of a lesion sized 15.5 cm × 11.5 cm × 10.5 cm as a retroperitoneal IMT, and the first tumor resection was performed 12 months ago. The patient, who suffered from tumor recurrence within 1 year and whose recurrent tumor also invaded into the renal parenchymal was given a retroperitoneal neoplasm resection plus right nephrectomy. In order to clarify the pathological features, the histological specimens of recurrent retroperitoneal IMT were examined as well as primary retroperitoneal IMT, and immunohistochemical (IHC) stains showed that the spindle cells were positive for vimentin and negative for anaplastic lymphoma kinase (ALK). At 24 months follow-up, the patient recovered well and there was no evidence of tumor recurrence. This case report is conducive to understanding this rare tumor. When conditions permit, complete surgical resection is the recommended treatment for primary and recurrent IMT.
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Affiliation(s)
- Tianle Zhu
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Pan Gao
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Jingjing Gao
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Xi Liu
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Xiansheng Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
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4
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Sangiorgio VFI, Arber DA. Non-hematopoietic neoplastic and pseudoneoplastic lesions of the spleen. Semin Diagn Pathol 2021; 38:159-164. [DOI: 10.1053/j.semdp.2020.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/22/2020] [Accepted: 06/22/2020] [Indexed: 01/04/2023]
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5
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Ke X, He H, Zhang Q, Yuan J, Ao Q. Epstein-Barr virus-positive inflammatory follicular dendritic cell sarcoma presenting as a solitary colonic mass: two rare cases and a literature review. Histopathology 2020; 77:832-840. [PMID: 32506505 DOI: 10.1111/his.14169] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 06/02/2020] [Indexed: 11/29/2022]
Abstract
AIMS Follicular dendritic cell (FDC) sarcoma is a rare neoplasm originating from follicular dendritic cells in germinal centres. It is classified as conventional and Epstein-Barr virus (EBV)-positive inflammatory FDC sarcoma according to the 2019 World Health Organization classification of digestive system tumours; the latter is rarer. So in view of the rarity and difficulty in diagnosis, the aim of the manuscript is to share our experience of diagnosing EBV-positive inflammatory FDC sarcoma. METHODS AND RESULTS Here, we describe the clinicopathological features, gross description, histomorphology, immunophenotype, EBV-encoded mRNA (EBER) in-situ hybridisation, gene rearrangement and clinical follow-up of two patients with EBV-positive inflammatory FDC sarcoma in the colon, and review the relevant literature. The tumours were found in two males, aged 53 and 48 years, respectively, with a tumour diameter between 10 and 45 mm. Both cases occurred in the colon and presented as pedunculated colonic masses. Microscopically, scanty atypical ovoid to spindle neoplastic cells were mixed in a background of florid lymphoplasmacytic infiltration. The nuclei of these atypical cells showed vesicular chromatin and small, distinct nucleoli. Immunohistochemistry demonstrated that the atypical stromal cells were positive for CD21, CD23, CD35, and D2-40. EBER in-situ hybridisation also gave positive results in two cases. There was a mean follow-up of 9 months (range, 7-11 months). CONCLUSION EBV-positive inflammatory FDC sarcoma is an extremely rare tumour with a distinct morphology and phenotype. Therefore, it is very important to recognise it particularly for correct diagnosis and prevention of misdiagnosis and mistreatment.
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Affiliation(s)
- Xiaokang Ke
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Huihua He
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Qingping Zhang
- Department of Pathophysiology, School of Basic Medicine, Huazhong University of Science and Technology, Wuhan, China
| | - Jingping Yuan
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Qilin Ao
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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6
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Tregnago AC, Morbeck DL, D’Almeida Costa F, Campos AHJFM, Soares FA, Vassallo J. Inflammatory pseudotumor-like follicular dendritic cell tumor: an underdiagnosed neoplasia. ACTA ACUST UNITED AC 2017. [DOI: 10.1186/s41241-017-0051-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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7
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Van Baeten C, Van Dorpe J. Splenic Epstein-Barr Virus–Associated Inflammatory Pseudotumor. Arch Pathol Lab Med 2017; 141:722-727. [DOI: 10.5858/arpa.2016-0283-rs] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Splenic inflammatory pseudotumor (IPT) is an uncommon lesion with an inflammatory morphologic aspect that often poses a diagnostic challenge. The etiology of IPT can be infectious, autoimmune, reactive, or neoplastic. Splenic Epstein-Barr virus (EBV)–associated IPTs form a subset of splenic IPTs in which there is a spindle cell component infected by EBV. The best characterized and most frequent subgroup of splenic EBV-associated IPT is IPT-like follicular dendritic cell tumor. This review also focusses on EBV-associated splenic IPTs without follicular dendritic cell marker expression. These lesions are less well characterized, making the differential diagnosis with other splenic lesions even more difficult. Recently, increased numbers of immunoglobulin G4–positive plasma cells and the presence of numerous granulomas have been reported in EBV-associated IPTs, and this can add to the difficulties in recognizing the neoplastic nature of these lesions. Herein, we also review the epidemiology, clinical features, histologic morphology, immunohistochemistry, electron microscopy, and pathogenesis of EBV-associated IPTs.
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Affiliation(s)
| | - Jo Van Dorpe
- From the Department of Pathology, Ghent University Hospital, Ghent, Belgium
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8
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Kitamura Y, Takayama Y, Nishie A, Asayama Y, Ushijima Y, Fujita N, Morita K, Baba S, Kubo Y, Shirabe K, Honda H. Inflammatory Pseudotumor-like Follicular Dendritic Cell Tumor of the Spleen: Case Report and Review of the Literature. Magn Reson Med Sci 2015; 14:347-54. [PMID: 25740238 DOI: 10.2463/mrms.2014-0052] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
A 74-year-old woman underwent contrast-enhanced (CE) computed tomography (CT) that revealed an enlarging splenic lesion. This splenic tumor was suspected as metastasis because the patient had been diagnosed with right breast cancer with lung and right axillary lymph node metastases 4 years earlier and had undergone surgery and hormone therapy at another hospital. T2-weighted imaging of magnetic resonance (MR) imaging demonstrated the tumor with slightly high intensity with a rim of low intensity at the margin. On dynamic contrast-enhanced (DCE)-MR imaging after intravenous administration of gadolinium diethylenetriamine pentaacetic acid, delayed enhancement was observed in the center and margin of the tumor. On positron emission tomography with 2-deoxy-2-[18F] fluoro-D-glucose (FDG) integrated with CT, the tumor showed high FDG uptake. Splenic metastasis was considered based on the imaging findings, lack of inflammation on laboratory data, and clinical course, so she underwent splenectomy. Histopathologically, the tumor was encapsulated by a fibrous structure, which was depicted as the rim at the tumor margin on T2-weighted imaging and DCE-MR imaging. Immunohistochemical study allowed the diagnosis of inflammatory pseudotumor (IPT)-like follicular dendritic cell tumor (FDCT). FDCT is a primary neoplasm of lymph nodes that shows features of follicular dendritic cell differentiation, and it is rare at the spleen. Differential diagnosis is difficult between IPT-like FDCT and similar splenic tumors, such as IPT, splenic metastases, hamartoma and hemangioma. However, in addition to the enhancement pattern within a tumor on DCE-MR imaging, detection of the capsular-like rim on MR imaging might aid the diagnosis of splenic IPT-like FDCT.
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Affiliation(s)
- Yoshiyuki Kitamura
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
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9
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Vardas K, Manganas D, Papadimitriou G, Kalatzis V, Kyriakopoulos G, Chantziara M, Exarhos D, Drakopoulos S. Splenic inflammatory pseudotumor-like follicular dendritic cell tumor. Case Rep Oncol 2014; 7:410-6. [PMID: 25076893 PMCID: PMC4107821 DOI: 10.1159/000365000] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Inflammatory pseudotumor of the spleen with expression of follicular dendritic cell markers is an extremely rare lesion with only a few cases reported previously. The present study reports on an inflammatory pseudotumor of the spleen 10 × 8 × 7 cm in size that was incidentally found in a 61-year-old man and increased gradually in size during a period of 3 months. Abdominal ultrasonography revealed a well-circumscribed splenic mass, and abdominal computed tomography confirmed the presence of a well-circumscribed isodense lesion in the splenic hilum with inhomogenous enhancement in the early-phase images and no enhancement on delayed-phase contrast-enhanced images. Magnetic resonance imaging of the abdomen showed a well-defined isodense tumor on T1-weighted images with mildly increased signal intensity on T2-weighted images, and this is only the second study that provides MRI findings of this entity. The patient underwent an uncomplicated open splenectomy for definitive histologic diagnosis. Under microscopic examination, the lesion was an admixture of lymphocytes, plasma cells and spindle cells. In situ hybridization analysis for Epstein-Barr virus (EBV) revealed that most of the spindle cells were positive for EBV, and immunochemistry showed the expression of the follicular dendritic cell markers CD21, CD35 and CD23 within the tumor. The diagnosis of inflammatory pseudotumor-like follicular dendritic cell tumor was established.
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Affiliation(s)
| | | | | | | | | | - Maria Chantziara
- Department of Pathology, Evangelismos General Hospital, Athens, Greece
| | - Dimitrios Exarhos
- Department of Radiology, Evangelismos General Hospital, Athens, Greece
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10
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Choe JY, Go H, Jeon YK, Yun JY, Kim YA, Kim HJ, Huh J, Lee H, Shin DH, Kim JE. Inflammatory pseudotumor-like follicular dendritic cell sarcoma of the spleen: a report of six cases with increased IgG4-positive plasma cells. Pathol Int 2014; 63:245-51. [PMID: 23714251 DOI: 10.1111/pin.12057] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Accepted: 04/17/2013] [Indexed: 01/05/2023]
Abstract
Inflammatory pseudotumor (IPT)-like follicular dendritic cell (FDC) sarcoma is a rare neoplasm typically occurring in the spleen or liver. We present six cases of EBV(+) IPT-like FDC sarcoma of the spleen among Koreans along with their clinicopathologic features and IHC results. Most patients presented with an asymptomatic, incidentally detected single splenic mass and were successfully managed by splenectomy alone. Concomitant disease was found in one case, showing EBV(+) gastric carcinoma with lymphoid-rich stroma. Histologic features showed fibro-inflammatory lesions that were often accompanied by necrosis and epithelioid histiocytic collection, which are barely distinguishable from IPT. Tumor cells did not frequently express conventional FDC markers, including CD21 (3/6 positive cases), clusterin (4/6), and D2-40 (2/6), but showed uniform positivity for smooth muscle actin (SMA). Noticeably, significant numbers of IgG4(+) plasma cells were found within all six tumors. We suggest that the diagnosis of IPT-like FDC sarcoma should be made by the application of a panel of FDC markers, and CD21 negativity or SMA positivity cannot be the criterion for exclusion of IPT-like FDC sarcoma. Relationship of IPT-like FDC sarcoma of the spleen and IgG4-related sclerosing disease should be investigated in further studies.
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Affiliation(s)
- Ji-Young Choe
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
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11
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Pan ST, Cheng CY, Lee NS, Liang PI, Chuang SS. Follicular Dendritic Cell Sarcoma of the Inflammatory Pseudotumor-like Variant Presenting as a Colonic Polyp. KOREAN JOURNAL OF PATHOLOGY 2014; 48:140-5. [PMID: 24868227 PMCID: PMC4026805 DOI: 10.4132/koreanjpathol.2014.48.2.140] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 02/06/2013] [Accepted: 02/28/2013] [Indexed: 12/11/2022]
Abstract
Follicular dendritic cell (FDC) sarcoma is rare and is classified either as conventional type or inflammatory pseudotumor (IPT)-like variant. Extranodal presentation is uncommon and nearly all gastrointestinal FDC tumors are of the conventional type. IPT-like variant tumors occur almost exclusively in the liver and spleen and are consistently associated with Epstein-Barr virus (EBV). Here we report the case of a 78-year-old woman with an IPT-like FDC sarcoma presenting as a pedunculated colonic polyp. Histologically, scanty atypical ovoid to spindle cells were mixed with a background of florid lymphoplasmacytic infiltrate, which led to an initial misdiagnosis of pseudolymphoma. These atypical cells expressed CD21, CD23, CD35, and D2-40, and were positive for EBV by in situ hybridization, confirming the diagnosis. The patient was free of disease five months after polypectomy without adjuvant therapy. Although extremely rare, the differential diagnosis for colonic polyp should include FDC sarcoma to avoid an erroneous diagnosis. A review of the 24 cases of IPT-like FDC sarcoma reported in the literature reveal that this tumor occurs predominantly in females with a predilection for liver and spleen, and has a strong association with EBV.
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Affiliation(s)
- Shien-Tung Pan
- Department of Pathology, Miao-Li General Hospital, Miaoli City, Taiwan
| | - Chih-Yuan Cheng
- Department of Surgery, Miao-Li General Hospital, Miaoli City, Taiwan
| | - Nie-Sue Lee
- Department of Surgery, Miao-Li General Hospital, Miaoli City, Taiwan
| | - Peir-In Liang
- Department of Pathology, Chi-Mei Medical Center, Tainan, Taiwan
| | - Shih-Sung Chuang
- Department of Pathology, Chi-Mei Medical Center, Tainan, Taiwan. ; Department of Pathology, Taipei Medical University, Taipei, Taiwan
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12
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Kim HJ, Kim JE, Kang GH, Kim JY, Park K. Inflammatory Pseudotumor-like Follicular Dendritic Cell Tumor of the Spleen with Extensive Histiocytic Granulomas and Necrosis: A Case Report and Literature Review. KOREAN JOURNAL OF PATHOLOGY 2013; 47:599-602. [PMID: 24421858 PMCID: PMC3887167 DOI: 10.4132/koreanjpathol.2013.47.6.599] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2013] [Revised: 03/20/2013] [Accepted: 04/08/2013] [Indexed: 12/31/2022]
Affiliation(s)
- Hyun-Jung Kim
- Department of Pathology, Inje University Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Ji Eun Kim
- Department of Pathology, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Gu-Hyun Kang
- Department of Pathology, Inje University Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Jung Yeon Kim
- Department of Pathology, Inje University Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Kyeongmee Park
- Department of Pathology, Inje University Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea
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13
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Saygin C, Uzunaslan D, Ozguroglu M, Senocak M, Tuzuner N. Dendritic cell sarcoma: a pooled analysis including 462 cases with presentation of our case series. Crit Rev Oncol Hematol 2013; 88:253-71. [PMID: 23755890 DOI: 10.1016/j.critrevonc.2013.05.006] [Citation(s) in RCA: 157] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 03/16/2013] [Accepted: 05/08/2013] [Indexed: 02/06/2023] Open
Abstract
Dendritic cell tumors are extremely rare and current knowledge on these tumors is limited. The characteristics of three dendritic cell sarcoma subtypes and their optimal treatment approaches are not fully clarified. We aimed to make a systematic review of the literature and enrich the current data with five new cases. Pooled analysis of 462 reported cases revealed that the tumor had no age, gender or racial predilection. Our analysis suggests that the young age, advanced stage, intraabdominal involvement and unfavorable histological features (i.e. large tumor size, absence of lymphoplasmacytic infiltration, coagulative necrosis, high mitotic count) may predict poor prognosis. Subtypes of this tumor have different clinical behaviors with interdigitating dendritic cell sarcoma being the most aggressive form. In general, surgery is the most effective treatment modality and adjuvant radiotherapy has no significant effect on overall survival of patients. The role of chemotherapy for the management of advanced disease is controversial.
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Affiliation(s)
- Caner Saygin
- Istanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey.
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14
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Liu C, Zhao X, Zhao Z, Lu P, Jin F, Li G. Malignant inflammatory myofibroblastic tumor of the prostate. J Clin Oncol 2013; 31:e144-7. [PMID: 23401456 DOI: 10.1200/jco.2012.44.4851] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Caigang Liu
- First Hospital of China Medical University, Shenyang, China
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15
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Liu Y, Wang J, Lin XY, Xu HT, Qiu XS, Wang EH. Inflammatory angiomyolipoma of the liver: a rare hepatic tumor. Diagn Pathol 2012; 7:122. [PMID: 22978636 PMCID: PMC3487789 DOI: 10.1186/1746-1596-7-122] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Accepted: 09/13/2012] [Indexed: 02/06/2023] Open
Abstract
Angiomyolipoma (AML) is a rare mesenchymal neoplasm of the tumor, composed of a varying heterogeneous mixture of three tissue components: blood vessels, smooth muscle and adipose cells. Hepatic AML may demonstrate a marked histological diversity. We herein present one case of hepatic AML exhibiting prominent inflammatory cells in the background, which happened in a 61-year-old Chinese female patient, without signs of tuberous sclerosis. Histologically, the striking feature was the infiltration of numerous inflammatory cells in the background, including small lymphocytes, plasma cells, and eosnophils. The tumor cells were spindled and histiocytoid in shape, with slightly eosinophilic cytoplasm, and arranged along the vessels or scattered among the inflammatory background. Sinusoid structure was obviously seen in the tumor. Mature adipocytes and thick-walled blood vessels were focally observed at the boundaries between the tumor and surrounding liver tissues. The tumor cells were positive immunostaining for HMB-45, Melan-A, and smooth muscle actin. The inflammatory AML should be distinguished from other tumors with inflammatory background such as inflammatory myofibroblastic tumor and follicular dendritic cell tumor and deserves wider recognition for its occurrence as a primary hepatic tumor.
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Affiliation(s)
- Yang Liu
- Department of Pathology, the First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, 110001, China
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16
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Khallouk A, Ahallal Y, Tazi MF, Elfatemi H, Tazi E, Elammari J, Elfassi MJ, Farih MH. Inflammatory pseudotumor of the kidney: a case report. J Med Case Rep 2011; 5:411. [PMID: 21864369 PMCID: PMC3177925 DOI: 10.1186/1752-1947-5-411] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2010] [Accepted: 08/24/2011] [Indexed: 01/02/2023] Open
Abstract
Introduction Inflammatory pseudotumors, also known as inflammatory myofibroblastic tumors, are uncommon benign tumors of unknown etiology which may develop at several anatomical sites. In the urogenital tract, inflammatory pseudotumor usually affects the urinary bladder or the prostate. Inflammatory pseudotumor of the kidney is very rare. It is considered as a reactive inflammatory lesion that features very good prognosis. Case presentation We present the case of a 57-year-old Moroccan man who presented with a two-month history of gross hematuria and left lumbar pain. Imaging investigations revealed a left kidney mass and pathological examination of the nephrectomy specimen showed an inflammatory pseudotumor. Conclusion As the preoperative definitive diagnosis of such a tumor is not possible, surgery is advised because only pathological examination of the nephrectomy specimen can establish the diagnosis with certainty. From one case report and literature review, the authors suggest a diagnostic and therapeutic strategy for the management of this rare tumor.
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Harchichi N, Mikou A, Benkirane A, Taleb M, Kamouni M, Echarif S, Amrani M, Gamra L. [An unusual lymph node tumor]. Ann Pathol 2010; 30:398-401. [PMID: 21055530 DOI: 10.1016/j.annpat.2010.07.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/22/2010] [Indexed: 10/18/2022]
Affiliation(s)
- Nawal Harchichi
- Service d'anatomie pathologique, institut nationale d'oncologie, hôpital sidi Mohamed Iben Abdillah, Rabat, Maroc
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18
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Shi H, Cao D, Wei L, Sun L, Guo A. Inflammatory angiomyolipomas of the liver: a clinicopathologic and immunohistochemical analysis of 5 cases. Ann Diagn Pathol 2010; 14:240-6. [PMID: 20637427 DOI: 10.1016/j.anndiagpath.2010.03.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2010] [Revised: 03/09/2010] [Accepted: 03/09/2010] [Indexed: 12/13/2022]
Abstract
Hepatic angiomyolipoma (AML) may demonstrate a marked histologic diversity. We report 5 cases of hepatic AML exhibiting prominent inflammatory cells in the background (inflammatory AML). The patients were 4 females and 1 male, with age ranged from 21 to 48 years (mean, 39.2 years). Three tumors were in the left lobe and 2 in the right lobe. The tumor size was from 5.5 to 10 cm in the greatest dimension (mean, 7.46 cm). No patient had clinical features of tuberous sclerosis. Histologically, the striking feature was the infiltration of numerous inflammatory cells in the background of the tumors, including small lymphocytes, plasma cells, and histiocytes. The percentage of tumor area with heavy inflammatory infiltration was more than 50% in all cases. The myoid cells were spindled and epithelioid in shape, with eosinophilic or clear cytoplasm, and were arranged in fascicles and clusters. Scattered adipose cells and sinusoidal and thick-walled blood vessels were variably present in all tumors. Focal trabecular arrangement was present in 2 of the 5 tumors. There was no nuclear atypia, and mitotic figures were rare. The myoid cells were diffusely positive for vimentin, smooth muscle actin, and HMB-45 in all cases. All patients showed no evidence of disease after the initial surgical excision during a follow-up period from 3 to 9 years. The inflammatory AMLs should be distinguished from other tumors with inflammatory background such as inflammatory myofibroblastic tumor and follicular dendritic cell tumor.
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Affiliation(s)
- Huaiyin Shi
- Department of Pathology, The Chinese PLA General Hospital, Beijing 100853, China.
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19
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Ryu KH, Im CM, Kim MK, Kwon D, Park K, Ryu SB, Choi C. Inflammatory myofibroblastic tumor of the kidney misdiagnosed as renal cell carcinoma. J Korean Med Sci 2010; 25:330-2. [PMID: 20119595 PMCID: PMC2811309 DOI: 10.3346/jkms.2010.25.2.330] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2008] [Accepted: 09/21/2008] [Indexed: 12/27/2022] Open
Abstract
The inflammatory myofibroblastic tumor (IMT), also knowns as inflammatory pseuduotumor, is a soft tissue lesion of unknown etiology. In the urogenital tract, IMT mainly affects the urinary bladder or prostate, but rarely the kidney. It has been considered as a nonneoplastic reactive inflammatory lesion, but nowadays, it is regarded as a neoplasm due to its high recurrence rate and metastasis. We describe a case of a 61-yr-old woman that had originally been misdiagnosed as renal cell carcinoma, which was pathologically revealed to be an IMT.
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Affiliation(s)
- Kwang Ho Ryu
- Department of Urology, Chonnam National University Medical School, Dong-gu, Gwangju, Korea.
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20
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Yu L, Yang SJ. Primary Follicular Dendritic Cell Sarcoma of the Thyroid Gland Coexisting With Hashimoto’s Thyroiditis. Int J Surg Pathol 2009; 19:502-5. [PMID: 19448067 DOI: 10.1177/1066896909335507] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Follicular dendritic cell (FDC) sarcoma, especially of extranodal origin, is an extremely rare malignancy of FDC origin, with only 1 case previously documented in the thyroid. The authors report the case of a 58-year-old female who presented with a painless mass in her neck. The neoplastic cells expressed monocyte/macrophage-specific marker CD68 (KP-1) and lysozymes and the dendritic cell-associated antigens CD35 and Fascin but was negative for CD1a, CD21, and CD23, most consistent with a diagnosis of FDC sarcoma. BIOMED-2 multiplex polymerase chain reaction analysis showed B-cell clonality in both tumor and its adjacent coexisting Hashimoto’s thyroiditis. To the authors’ knowledge, this is the first report of a rare entity of FDC sarcoma primarily involving the thyroid gland coexisting with Hashimoto’s thyroiditis.
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Affiliation(s)
- Lu Yu
- Pathology, Xi Jing Hospital, 4th Military Medical University, Xi’an, Shaanxi 710032, China
| | - Shou Jing Yang
- Pathology, Xi Jing Hospital, 4th Military Medical University, Xi’an, Shaanxi 710032, China
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21
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Kiryu S, Takeuchi K, Shibahara J, Uozaki H, Fukayama M, Tanaka H, Maeda E, Akahane M, Ohtomo K. Epstein-Barr virus-positive inflammatory pseudotumour and inflammatory pseudotumour-like follicular dendritic cell tumour. Br J Radiol 2009; 82:e67-71. [PMID: 19325041 DOI: 10.1259/bjr/66918927] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Various splenic inflammatory pseudotumours are reported to be infected with Epstein-Barr virus (EBV), which is thought to be associated with the pathogenesis of the lesion. The term "inflammatory pseudotumour (IPT)-like follicular dendritic cell tumour", all cases of which are also EBV positive, has recently been proposed. Here, we describe the imaging findings of these splenic tumours and present the cases of an IPT-like follicular dendritic cell tumour and two EBV-positive inflammatory pseudotumours in two female patients and one male patient. These splenic lesions were found incidentally on pre-operative or post-operative screening or at medical check-up. CT performed on all three patients revealed low-density solitary masses in the spleen. MRI was performed on one patient; the solitary mass demonstrated isointensity on T(1) weighted images and low intensity on T(2) weighted images relative to the surrounding splenic parenchyma. Dynamic MRI study revealed that the mass did not enhance on the early phase but enhanced to the same degree as the surrounding splenic parenchyma on the delayed phase. The imaging findings are almost identical to those found in conventional IPT because the morphology is similar in both cases; however, attention should be paid to this new entity in the diagnosis of splenic lesions because of its neoplastic nature. Longer follow-up is also necessary for these patients compared with those with conventional IPT.
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Affiliation(s)
- S Kiryu
- Department of Radiology, Graduate School and Faculty of Medicine, University of Tokyo, Japan.
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22
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Chorianopoulos D, Samitas K, Vittorakis S, Makrygianni V, Tassidou A, Vadala C, Skoutelis A. Indolent fever, weight loss and spleen infiltrate. Scand J Gastroenterol 2009; 43:1275-8. [PMID: 18609151 DOI: 10.1080/00365520801917663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This is a case of a young female who was admitted to our department with fever of one month in duration, without a specific pattern, anemia, lymphadenopathy and weight loss. The initial clinical and radiological evaluation and laboratory tests, although extensive, were unrevealing. The patient's general situation was temporarily improved and she was dismissed, but she revisited our hospital 2, 5 months later because of fever recurrence and a new pain at the upper left abdomen. This time the pathological findings were more prominent. The abdomen CT scan revealed a splenic mass. The evidence was suggestive of lymphoma, granulomatous or unusual infectious disease. However, it was not possible to establish a certain diagnosis, so we proceeded to open splenectomy and histological analysis that disclosed an inflammatory pseudotumor of the spleen. This procedure apart from diagnostic proved to be also therapeutic. The patient was cured and at six-month follow up she was in perfect health. Our case suggests that a high index of suspicion regarding this entity is needed, particularly if the disease course is variable and protracted.
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23
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Detection of Epstein–Barr virus-encoded small RNA-expressed myofibroblasts and IgG4-producing plasma cells in sclerosing angiomatoid nodular transformation of the spleen. Virchows Arch 2008; 453:275-82. [DOI: 10.1007/s00428-008-0648-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2007] [Revised: 04/23/2008] [Accepted: 07/23/2008] [Indexed: 02/06/2023]
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24
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Laurent C, Meggetto F, de Paiva GR, Selves J, Palasse J, Laurent G, Brousset P. Follicular dendritic cell tumor of the spleen associated with diffuse large B-cell lymphoma. Hum Pathol 2008; 39:776-80. [DOI: 10.1016/j.humpath.2007.08.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2007] [Revised: 08/07/2007] [Accepted: 08/30/2007] [Indexed: 01/12/2023]
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25
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Bektas S, Okulu E, Kayigil O, Ertoy Baydar D. Inflammatory myofibroblastic tumor of the perirenal soft tissue misdiagnosed as renal cell carcinoma. Pathol Res Pract 2007; 203:461-5. [PMID: 17451888 DOI: 10.1016/j.prp.2007.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2006] [Revised: 01/21/2007] [Accepted: 02/05/2007] [Indexed: 01/01/2023]
Abstract
Inflammatory myofibroblastic tumor (IMT) of the kidney or perirenal soft tissue is a rare benign lesion that can mimic a malignant renal neoplasm. We describe the case of a 51-year-old woman that had originally been misdiagnosed as renal cell carcinoma in another hospital. Histologic re-evaluation of the tumor in our institution showed that it was in fact an IMT. Awareness of this entity is required for rendering the accurate diagnosis. An association with inflammatory infiltrate, frequent erythrocyte extravasations, edematous or myxoid stroma, absence of atypical mitosis, and the results of a detailed immunohistochemical panel might help in the differential diagnosis. Our patient is recurrence-free in the 18th month of post-operative follow-up.
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Affiliation(s)
- Sibel Bektas
- Department of Pathology, Hacettepe University Hospital, Ankara, Turkey
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26
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Shia J, Chen W, Tang LH, Carlson DL, Qin J, Guillem JG, Nobrega J, Wong WD, Klimstra DS. Extranodal follicular dendritic cell sarcoma: clinical, pathologic, and histogenetic characteristics of an underrecognized disease entity. Virchows Arch 2006; 449:148-58. [PMID: 16758173 DOI: 10.1007/s00428-006-0231-4] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2006] [Accepted: 05/05/2006] [Indexed: 12/19/2022]
Abstract
It has been more than 10 years since follicular dendritic cell (FDC) sarcoma was first reported to occur in extranodal sites, yet extranodal FDC sarcoma still appears underrecognized, and its clinical and pathological characteristics remain to be defined. This study analyzed the clinical and pathological findings of three such cases that the authors encountered recently and 43 previously reported cases identified in the literature. Assessment of all 46 cases showed a slight female predominance (1.2:1) with a median age of 41.5 years. One-third of the cases were misdiagnosed at initial evaluation mainly because the possibility of FDC sarcoma was not considered. When considered, this disease had distinct pathological characteristics that allowed an accurate diagnosis. Staining for FDC markers, CD21, CD35, and clusterin was particularly helpful. The pathogenesis of the disease appeared heterogeneous, and associated factors included Epstein-Barr virus infection (in hepatic cases) and inflammatory pseudotumor-like conditions. Treatment modality varied widely although surgical resection was often included. With a median follow-up of 18 months, 43% of the cases recurred and 7% died of disease. The 5-year recurrence-free survival was 27.4%. From data available at the current time, we were not able to identify prognostically significant pathologic factors.
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Affiliation(s)
- Jinru Shia
- Department of Pathology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10021, USA
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27
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Bai LY, Kwang WK, Chiang IP, Chen PM. Follicular dendritic cell tumor of the liver associated with Epstein-Barr virus. Jpn J Clin Oncol 2006; 36:249-53. [PMID: 16533803 DOI: 10.1093/jjco/hyl001] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Follicular dendritic cell tumors are an uncommon neoplasm. About half of all cases occur in the lymph nodes, especially in the neck region. Follicular dendritic cell tumors of the liver are even rarer. In this article we report a case of a hepatic follicular dendritic cell tumor. A 30-year-old female was noted to have a hepatic mass 6 cm in size in segment 6. The patient underwent a right lobectomy of the liver. Microscopically, the lesion was an admixture of spindle cells and inflammatory cells, chiefly lymphocytes, plasma cells, histiocytes and a few neutrophils. The spindle cells were arranged in a wavy pattern, with a vague cellular border and eosinophilic cytoplasm. These tumor cells were immunoreactive to CD21 and CD68. The test for Epstein-Barr virus (EBV)-encoded nuclear RNAs using in situ hybridization was also positive. Although hepatic follicular dendritic cell tumors appear similar to conventional inflammatory pseudotumors in terms of histology, they should be regarded as a clonal proliferation of follicular dendritic cells. In contrast to follicular dendritic cell tumors in extrahepatic areas, hepatic follicular dendritic cell tumors have a strong association with EBV and a greater inflammatory component and are more prevalent in females.
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Affiliation(s)
- Li-Yuan Bai
- Division of Hematology and Oncology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan.
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