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Diao L, Li W, Jiang Q, Huang H, Zhou E, Peng B, Chen X, Zeng Z, He C. Inflammatory myofibroblastic tumor of the submandibular gland Harboring MSN-ALK gene fusion: A case report and literature review. Heliyon 2023; 9:e22928. [PMID: 38144359 PMCID: PMC10746421 DOI: 10.1016/j.heliyon.2023.e22928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 11/20/2023] [Accepted: 11/22/2023] [Indexed: 12/26/2023] Open
Abstract
Inflammatory myofibroblastic tumors (IMTs) are rare lesions with distinct clinical, pathological, and molecular characteristics. IMTs typically arise in the abdominal soft tissues, including the mesentery, omentum, and retroperitoneum, followed by the lungs and mediastinum, and usually affect both children and young adults. Herein, we present a rare case of an IMT in the submandibular gland of a 47-year-old male patient. Microscopically, the tumor displayed an infiltrative growth pattern with diffuse glandular tissue destruction. Their backgrounds revealed characteristic spindles and inflammatory cells. Immunohistochemistry revealed positivity for anaplastic lymphoma kinase (ALK), smooth muscle actin, and calponin in neoplastic cells. The inflammatory cells and some neoplastic cells were positive for CD68. In contrast, negative staining for cytokeratin, desmin, and CD30 was observed. Furthermore, fluorescence in situ hybridization revealed ALK gene rearrangements, and next-generation sequencing detected a moesin (MSN)-ALK gene fusion. This case highlights a rare and unique occurrence of IMT originating from the submandibular gland, which exhibited an MSN-ALK gene fusion.
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Affiliation(s)
- Limei Diao
- Department of Pathology, Chongqing University Cancer Hospital, Chongqing, 400030, China
- Chongqing Cancer Multi-omics Big Data Application Engineering Research Center, Chongqing University Cancer Hospital, Chongqing, 400030, China
| | - Wen Li
- Department of Pathology, Chongqing University Cancer Hospital, Chongqing, 400030, China
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing, 400030, China
| | - Qingming Jiang
- Department of Pathology, Chongqing University Cancer Hospital, Chongqing, 400030, China
- Chongqing Cancer Multi-omics Big Data Application Engineering Research Center, Chongqing University Cancer Hospital, Chongqing, 400030, China
| | - Haiping Huang
- Department of Pathology, Chongqing University Cancer Hospital, Chongqing, 400030, China
- Chongqing Cancer Multi-omics Big Data Application Engineering Research Center, Chongqing University Cancer Hospital, Chongqing, 400030, China
| | - Enle Zhou
- Department of Pathology, Chongqing University Cancer Hospital, Chongqing, 400030, China
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing, 400030, China
| | - Bingjie Peng
- Department of Pathology, Chongqing University Cancer Hospital, Chongqing, 400030, China
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing, 400030, China
| | - Xiaoling Chen
- Department of pharmacy, Chongqing University Jiangjin Hospital, Chongqing, 402260, China
| | - Zhen Zeng
- Department of Pathology, Chongqing University Cancer Hospital, Chongqing, 400030, China
- Chongqing Cancer Multi-omics Big Data Application Engineering Research Center, Chongqing University Cancer Hospital, Chongqing, 400030, China
| | - Changqing He
- Department of Pathology, Chongqing University Cancer Hospital, Chongqing, 400030, China
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing, 400030, China
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Wakely PE. Mesenchymal neoplasms of the parotid gland and parapharyngeal space: an FNA cytologic study of 22 nonlipomatous tumors. Cancer Cytopathol 2022; 130:443-454. [PMID: 35195952 DOI: 10.1002/cncy.22562] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/01/2022] [Accepted: 02/07/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND Mesenchymal neoplasms of the parotid gland (PG) and para-pharyngeal (PP) space are distinctly uncommon. Fine-needle aspiration (FNA) biopsy experience with nonlipomatous neoplasms from this site is reviewed. METHODS Cytopathology and surgical pathology files were examined for mesenchymal PG and PP space neoplasms. FNA biopsy was performed using standard technique. RESULTS Twenty-two PG and/or PP aspirates from 20 adults (male:female = 1.1:1; age range, 19-84 years, mean age, 50 years) and a 10-week-old infant met inclusion criteria. Biopsy sites included PG (17, 77%) or PP space (5, 23%). Five of 6 malignant neoplasms (83%) were called malignant cytologically. Only 7 of 11 (63%) benign neoplasms were recognized as a benign neoplasm. None of 5 solitary fibrous tumor (SFT) cases were correctly recognized. Conversion to the Milan classification showed 8 (36%) FNA cases diagnosed as benign neoplasm, 6 (27%) malignant neoplasm, 4 (18%) neoplasm of uncertain malignant potential, 2 (9%) nondiagnostic, and single cases of suspicious for malignancy and nonneoplastic. There was 1 false-positive and no false-negative FNA diagnoses. Ancillary testing in 10 (45%) aspirates helped substantiate a correct specific diagnosis in 3 malignant and 3 benign cases. CONCLUSIONS FNA biopsy of nonlipomatous mesenchymal SG neoplasms is particularly challenging. Less than half (9 of 11, 41%) had specific FNA diagnoses that correctly matched the tissue diagnoses or clinical outcome. Accurate Milan categorization was superior for malignant neoplasms (5 of 6, 83%) in contrast to benign neoplasms (7 of 11, 63%), or neoplasms of uncertain malignant potential (SFT) (2 of 5, 40%).
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Affiliation(s)
- Paul E Wakely
- Department of Pathology, The Ohio State University Wexner Medical Center, James Cancer Hospital and Solove Research Institute, Columbus, Ohio
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Dhua AK, Garg M, Sen A, Chauhan DS. Inflammatory myofibroblastic tumor of parotid in infancy--a new entity. Int J Pediatr Otorhinolaryngol 2013; 77:866-8. [PMID: 23562234 DOI: 10.1016/j.ijporl.2013.02.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 02/13/2013] [Accepted: 02/24/2013] [Indexed: 12/01/2022]
Abstract
Inflammatory myofibroblastic tumor is commonly found in lungs, mesentery or omentum in the younger population. We hereby report a hitherto unreported case of inflammatory myofibroblastic tumor, arising from the parotid gland in an infant. Diagnosis by histopathology and its treatment by superficial parotidectomy is being presented.
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Affiliation(s)
- Anjan Kumar Dhua
- Department of Pediatric Surgery, PGIMER & Dr RML Hospital, New Delhi, India.
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What's new in the AFIP fascicle on salivary gland tumors: a few highlights from the 4th Series Atlas. Head Neck Pathol 2009; 3:225-30. [PMID: 20596976 PMCID: PMC2811626 DOI: 10.1007/s12105-009-0128-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2009] [Accepted: 07/06/2009] [Indexed: 01/20/2023]
Abstract
After a 12 year interval from the previous fascicle, a new fascicle on Tumors of the Salivary Glands in the new fourth series of the AFIP Atlas of Tumor Pathology was published in 2008. The data, presentation, illustrations, tables, and physical characteristics of the newest fascicle have been updated and improved. There have only been a few alterations and additions to the classification of tumors and tumor-like non-neoplastic conditions of salivary gland. Three of the most significant are discussed in this paper. Sialoblastoma has been reclassified as malignant; inflammatory pseudotumor has been reclassified as neoplastic and re-identified as inflammatory myofibroblastic tumor; and sclerosing polycystic adenosis is a new entity among tumor-like conditions.
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