Inflammatory myofibroblastic tumor histology. (B) Pulmonary inflammatory myofibroblastic tumor exhibiting distinct collagenous stroma with scattered plasma cell infiltrate. Surgery is the treatment of … Jul 7, 2021 · Inflammatory myofibroblastic tumor (IMT) is a kind of mesenchymal tumor characterized with proliferation of myofibroblast spindle cells and prominent infiltration of plasmocytes and/or lymphocytes. 1002/pbc. IMT is typi … "An inflammatory myofibroblastic tumor exhibiting immunoreactivity to KIT: a case report focusing on a diagnostic pitfall. On ultrasonography (US), these tumours can appear as hypoechoic or hyperechoic masses and a Introduction: We report the clinical findings and results of treatment in the cohort of patients with inflammatory myofibroblastic tumor (IMT) managed according to the European pediatric Soft Tissue Sarcoma Study Group (EpSSG) protocol from 2005 to 2016. The tumor may recur and rarely metastasizes. Imaging findings reflect pathologic features and vary from an ill-defined, infiltrating lesion to a wellcircumscribed, soft tissue mass owing to variable inflammatory, stromal, and myofibroblastic Inflammatory myofibroblastic tumor, or IMT, forms in tissues called mucosal surfaces and mesentery. Inflammatory myofibroblastic tumor (IMT) is a distinctive fibroblastic and myofibroblastic spindle c Clinicopathologic and Genomic Characterization of Inflammatory Myofibroblastic Tumors of the Head and Neck: Highlighting a Novel Fusion and Potential Diagnostic Pitfall : The American Journal of Surgical Pathology Jul 17, 2012 · Inflammatory myofibroblastic tumor is a rare benign lesion whose tumor origin is now proven. IMT usually affects children and adolescents, although a broad age range has been documented. Surgery is the treatment of choice for localized tumors. Jul 8, 2021 · Inflammatory myofibroblastic tumor (IMT) is a kind of mesenchymal tumor characterized with proliferation of myofibroblast spindle cells and prominent infiltration of plasmocytes and/or lymphocytes. Only 150–200 cases are reported in the USA annually . [29] Solitary fibrous tumour, also fibrous termed tumor of the pleura. IMTs are one of the most frequent lung tumors in children, accounting for between 16% and 38% of cases in various series. Over time, however, IMT cases occurred in which the tumor spread into local tissues, metastasized to distal tissues, recurred after treatment, or consisted of neoplastic cells Inflammatory myofibroblastic tumor (IMT) is a mesenchymal neoplasm of intermediate biological potential with a predilection for the lung and abdominopelvic region. The histology shows spindle and epithelioid cells with eosinophilic cytoplasm, moderate pleomorphism but no mitotic activity and prominent nucleoli admixed with inflammatory cells characteristic of inflammatory leiomyosarcoma / inflammatory rhabdomyoblastic tumor. Because it is a rare mesenchymal tumor of unknown etiology and pathogenesis, and its clinical symptoms and radiologic features are not distinctive, intracranial IMT could be misdiagnosed as other extra-axial tum Methods: A PubMed/Medline search was conducted, according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, using the following Mesh terms: ("inflammatory myofibroblastic") AND ("tumor") OR ("tumor") AND ("bladder") AND ("case report"). Aug 12, 2022 · Inflammatory myofibroblastic tumor (IMT) is a rare myofibroblastic neoplasm that most frequently occurs in children and young adults. 3, 4 IMT primarily affects children Oct 1, 2014 · Inflammatory myofibroblastic tumor and other spindle cell lesions of the urinary bladder represent one of the most difficult diagnostic dilemmas in genitourinary pathology because of significant overlap between benign and malignant processes in terms of clinical presentation, gross findings, morphology, and immunoprofile. Inflammatory myofibroblastic tumor is an uncommon lesion of unknown cause. Inflammatory myofibroblastic tumor of the breast is an extremely rare lesion. The treatment of advanced disease is not precisely defined Apr 4, 2020 · Postoperative microscopic pathology of the inflammatory myofibroblastic tumors. Clinical, pathologic, and molecular features of inflammatory myofibroblastic tumors in children and adolescents Pediatr Blood Cancer . What molecular abnormality is present in this tumor? Histology of inflammatory myofibroblastic tumour. Genetically, most IMTs harbor tyrosine Jul 27, 2022 · An inflammatory myofibroblastic tumor (IMT) is a neoplasm composed of myofibroblastic and fibroblastic spindle cells accompanied by inflammatory cells, including lymphocytes and eosinophils. [1-3] Jan 16, 2020 · Inflammatory Myofibroblastic Tumor. 4 Lesions are usually 0. Search for more papers by this author. We describe the clinical, pathologic, and molecular findings in nine cases of placenta-associated IMT (PaIMT). Inflammatory myofibroblastic tumor (IMT) is a Aug 17, 2022 · Inflammatory myofibroblastic tumor (IMT) is a rare disease. Owing to its rarity, however, IMT remains poorly understood. 1 It is a soft tissue tumor, which evolves through myofibroblastic differentiation and is characterized by the infiltration of inflammatory cells into the tissue. Jul 9, 2021 · Inflammatory myofibroblastic tumor of soft tissue is a histologically distinctive myofibroblastic spindle cell neoplasm of borderline malignancy, classically featuring an intermixture of plasma cells and lymphocytes. 7% of all lung tumors. The name of the disease was introduced 2 years later, and the tumors were described as characterized by proliferation of fibroblasts and myofibroblasts, accompanied by chronic inflammatory infiltration by lymphocytes, plasma cells, eosinophils and histiocytes [2]. Histologically, the lesion is based in the dermis and seen underlying a normal epidermis (figure 1). World J Surg Oncol 12 : 186. Dec 18, 2014 · Objectives To present the most important characteristics of inflammatory myofibroblastic tumours (IMTs) arising in different locations of the body with histological correlation. We report the case of a three-year-old child who suffered from a chronic cough with recurrent respiratory infections. 5 cm in size. To review the symptoms and main radiological findings of IMTs. Dec 18, 2014 · To present the most important characteristics of inflammatory myofibroblastic tumours (IMTs) arising in different locations of the body with histological correlation. In recent years, diagnosis and classification has been aided substantially Inflammatory myofibroblastic tumors (IMTs) of the uterus are often associated with pregnancy and are delivered with the placenta. IMT usually starts in the lung, but it can also begin in many other places. IMT is rare in the … Microscopic examination shows a dense inflammatory infiltrate with scattered atypical tumor cells with prominent nucleoli that resemble Reed-Sternberg cells. Dec 14, 2018 · Pathology and immunohistochemistry analysis is the key to the diagnosis of primary gastric myofibroblastic tumors, especially ALK, which can be used as an identifying factors for IMT and gastrointestinal stromal tumors (GISTS), smooth muscle neoplasm, inflammatory fibrous polyps, solitary fibrous tumor, peripheral nerve sheath tumors Aug 1, 2021 · Section snippets Clinical presentation. A total of 75 case reports were included in the analysis. Methods To review the symptoms and main radiological findings of IMTs. Modern Pathology Dec 28, 2023 · Inflammatory myofibroblastic tumour (IMT) is a rare mesenchymal neoplasm of intermediate malignant potential, occurring at any age and at multiple sites. Which of the following is the most likely diagnosis? High grade osteosarcoma Hodgkin lymphoma Inflammatory myofibroblastic tumor Myxoinflammatory fibroblastic sarcoma Mar 21, 2024 · A. It is also known as plasma cell granuloma, inflammatory myofibrohistiocytic proliferation, omental Objectives: To present the most important characteristics of inflammatory myofibroblastic tumours (IMTs) arising in different locations of the body with histological correlation. Jul 11, 2013 · The term inflammatory myofibroblastic tumor (IMT) encompasses a diverse group of spindle cell entities that traverses a clinical and histologic spectrum, extending from reactive to benign neoplastic to highly aggressive with malignant inclinations. Jul 27, 2022 · An inflammatory myofibroblastic tumor (IMT) is a neoplasm composed of myofibroblastic and fibroblastic spindle cells accompanied by inflammatory cells, including lymphocytes and eosinophils. IMT represents the neoplastic subset of the family of inflammatory pseudotumors, an umbrella term for spindle cell proliferations of unc … Inflammatory pseudotumour is a generic term applied to a variety of neoplastic and non-neoplastic entities that share a common histological appearance, namely a cytologically bland spindle cell proliferation with a prominent, usually chronic inflammatory infiltrate. Over the last two decades, inflammatory myofibroblastic tumour (IMT) has emerged from within the broad category of inflammatory Jul 11, 2013 · The lack of necrosis and absence of staining for CD23 used as a substitute for CD21, further confirmed the exclusion of nodular fasciitis and follicular dendritic tumor, respectively. doi : 10. Head and neck IMTs are rarely seen and comprise less than 5 % of tumors. Learn more about treatment and the prognosis for IMT. IMTs are mostly found in children and young adults but can occur at any age. IMT has a predilection for the lung, abdomen, pelvis, and retroperitoneum, however, can affect any part of the body. Magnification, ×400. 14 IMT can occur at any site and presenting symptoms vary based on primary site of the IMT. Aug 7, 2024 · Inflammatory myofibroblastic tumors (IMTs) occur throughout the body, but the lungs are the most commonly involved organs. Inflammatory myofibroblastic tumor (IMT) or plasma cell granuloma is a distinctive lesion composed of myofibroblastic spindle cells accompanied by an inflammatory Inflammatory myofibroblastic tumor (IMT) is a neoplasm of intermediate biologic potential. R. Inflammatory myofibroblastic tumor (IMT) is terminology for neoplastic lesions. Diagnostic challenges arise from the diverse pathological presentation, variable symptomatology, and lack of different imaging features. Inflammatory myofibroblastic tumor (IMT) is a neoplasm of intermediate biologic potential. Inflammatory lesions are often called pseudotumors. 4. Magnification Jul 4, 2024 · Introduction: Inflammatory pseudotumor encompasses a broad range of non-neoplastic and neoplastic entities, including inflammatory myofibroblastic tumors (IMTs). Half of inflammatory myofibroblastic tumors (cases 1–6) showed a predominantly diffuse myxoid or edematous stroma with variably collagenized areas Mar 1, 2022 · Inflammatory pseudotumor (IPT) was first described in 1903 as a benign, non-infective, local lesion of the orbital region [1]. 1186/1477-7819-12-186 . ALK was expressed in 10 of Apr 12, 2021 · The diagnosis of benign and malignant soft tissue and bone neoplasms is a challenging area of surgical pathology, due to the large number, rarity, and histologic diversity of tumor types. The tumour is composed of an admixture of spindle-shaped and ovoid cells with a prominent inflammatory infiltrate (figures 2–3). After pneumonectomy, histological examination combined Pathology Clinic Inflammatory Myofibroblastic Tumor Lester D. 2 Nonetheless, rare cases with local recurrence and aggressive clinical course have been reported, especially in the small subset of patients Jan 3, 2018 · This review covers prostatic stromal proliferations (prostatic stromal tumor of uncertain malignant potential and stromal sarcoma), solitary fibrous tumor, myofibroblastic proliferations, smooth Dermatofibrosarcoma protuberans, fibrosarcomatous, also termed fibrosarcomatous dermatofibrosarcoma protuberans (or fibrosarcomatous DFSP), is a more aggressive tumor than dermatofibrosarcoma protuberans tumors). Jul 1, 2023 · Approximately half of inflammatory myofibroblastic tumors harbor anaplastic lymphoma kinase (ALK) fusion genes, and the other half could have potentially targetable fusion genes or mutations such as ROS1, NTRK and RET; case reports demonstrating the clinical efficacy of treatments targeted to inflammatory myofibroblastic tumor have been Nov 18, 2020 · Cytomorphological analysis of an inflammatory myofibroblastic tumor. Jul 11, 2016 · Pediatric fibroblastic and myofibroblastic tumors are a relatively common group of soft-tissue proliferations that are associated with a wide spectrum of clinical behavior. 29460. Methods. Immunohistochemistry shows ALK1 staining of the nuclear membranes. We studied 11 uterine IMTs with typical histology and 8 uterine myxoid smooth muscle tumors (5 leiomyomas, 1 smooth muscle tumor of uncertain malignant potential, and 2 leiomyosarcomas) in which the differential of IMT was considered, using a RNA-sequencing–based fusion assay to detect genetic fusions involving ALK, ROS1, RET, NTRK1/3, and other genes. ". ). Also known as pseudosarcoma, atypical myfibroblastic tumor, atypical fibromyxoid tumor, plasma cell granuloma. Thompson, MD1 Inflammatory myofibroblastic tumor (IMT) is a distinc-tive, rarely metastasizing, (myo)fibroblastic neoplasm composed of spindle cells accompanied by an inflamma-tory infiltrate of plasma cells, lymphocytes, and/or eosi-nophils. A: Well demarcated firm vascularized tumor mass with spotty inflammatory infiltrate; B: Bland proliferation of spindle cells in broad fascicles at higher magnification. Inflammatory myofibroblastic tumor (IMT) is a rare mesenchymal tumor of intermediate malignant potential that predominantly affects children, adolescents and young adults. A number of terms have been applied to the lesion, namely, inflammatory Nov 5, 2019 · Two main histologic patterns were identified. [30] Inflammatory myofibroblastic tumour [31] Sep 15, 2021 · 3. Patient characteristics, clinical features, histopathological results, immunohistochemical staining results, and treatment outcomes were reviewed. 15 Up to one-third of the IMT cases arise in the lungs 16 and 65% of cases involve the abdomen, retroperitoneum or pelvis. Mar 6, 2013 · Department of Pathology, Central University Hospital, 33306 Oviedo, Spain. Inflammatory leiomyosarcoma. It was first observed in the lung and described by Brunn in 1939 and was so named by Umiker et al. Methods: To review the symptoms and main radiological findings of IMTs. doi: 10. IMT is a benign and uncommon mesenchymal tumor. However, a detailed analysis of the development of terminology suggests that the term "inflammatory myofibroblastic tumors" should be used to refer to a neoplastic lesion. Previously termed “inflammatory pseudotumor” (among many other names), inflammatory myofibroblastic tumor (IMT) is a myofibroblastic neoplasm of intermediate biologic potential that arises predominantly in children, adolescents, and young adults in the lungs, abdomen, and pelvis [74, 75]. IMT is rare and its true incidence and prevalence remains unclear ( 1 ). Here we report a case of a 30 year old male who presented with a rapidly Jun 30, 2017 · Inflammatory myofibroblastic tumors of the uterus are rare, and although most have a favorable prognosis, a small subset exhibit extrauterine disease, recur, or cause death. It encompasses a spectrum of myofibroblastic proliferation along with varying amount of inflammatory infiltrate. Due to the limited number of cases, the cytogenetic characteristics of SCPFT have not been determined, and only one report found t(2;5)(q31;q31) chromosomal Jun 20, 2024 · Inflammatory myofibroblastic tumor (IMT) is a rare neoplasm with intermediate malignancy characterized by a propensity for recurrence but a low metastatic rate. Dec 1, 2021 · Inflammatory myofibroblastic tumor (IMT) is a distinctive fibroblastic and myofibroblastic spindle cell neoplasm with an accompanying inflammatory cell infiltrate and frequent receptor tyrosine kinase activation at the molecular level. IMTs show characteristic fasciitis-like, compact spindle cell and hypocellular fibrous histologic patterns and distinctive molecular features. It is an ultra-rare tumor, the optimal management of which remains to be defined. The tumor is composed of spindle-shaped myofibroblasts with fascicles or storiform patterns and sometimes within loose myxoid stroma. Apr 4, 2021 · These findings also demonstrate that this type of tumor is an independent entity that is different from inflammatory myofibroblastic tumors and dermatofibrosarcoma protuberans. Jul 27, 2016 · Inflammatory myofibroblastic tumor (IMT) is a distinct mesenchymal neoplasm composed of spindled fibroblastic and myofibroblastic cells in a myxoid to collagenous stroma containing abundant lymphocytic and plasmacytic inflammatory infiltrate . Inflammatory myofibroblastic tumor was initially regarded as a benign tumor that most often developed in the lung and less commonly in almost any organ system or tissue. (A) Long spindle cells contained small nuclei with vesicular chromatin and scattered plasma cells and lymphocytes. Chest X-ray and computed tomography revealed the presence of a left lower lobe lung mass. terine IMT. 2022 May;69(5):e29460. It represents 0. 8 IMT of the larynx, trachea, kidney, urinary bladder Apr 13, 2011 · Inflammatory Myofibroblastic tumor (IMT) is a rare neoplasm consisting of variable numbers of inflammatory cells and myofibroblastic spindle cells. In this study, we report a subset of IMTs with histologic atypia and/or clinical aggressiveness that were analyzed for clinicopathologic features, outcome, and immunohistochemical expression of anaplastic lymphoma kinase (ALK) and other markers to identify potential pathologic prognostic features. The median age at diagnosis is 9 years of age 2, 14 with a female to male ratio of 1. Mar 3, 2021 · An image of the tumor’s histology is seen above. On ultrasonography (US), these tumours can appear as hypoechoic or hyperechoic masses and a variable Doppler appearance with increased vascularity Apr 19, 2016 · Inflammatory myofibroblastic tumor is a neoplasm of intermediate biological aggressiveness and is classified among the fibroblastic—myofibroblastic tumors. These tumors have been divided into the following categories on the basis of their biologic behavior: benign (eg, myositis ossificans, myofibroma, fibromatosis colli), intermediate–locally aggressive (eg, lipofibromatosis The terms "inflammatory myofibroblastic tumors" and "inflammatory pseudotumors" are interchangeably used by many scientists. All the lesions were incidentally discovered at delivery or … Nov 8, 2023 · Inflammatory myofibroblastic tumor (IMT) is a locally aggressive mesenchymal tumor with lymphocyte infiltration [1–4], and myofibroblast spindle cell proliferation , that presents as a solitary lesion . Inflammatory myofibroblastic tumor (Pathol Res Pract 2023;242:154335) Interdigitating dendritic cell sarcoma (Am J Surg Pathol 2002;26:530) Leiomyoma (usually) and vascular leiomyoma (Am J Surg Pathol 2001;25:1355, J Clin Pathol 2002;55:395) Leiomyosarcoma (usually) (Arch Pathol Lab Med 2017;141:1072) Oct 1, 2006 · Inflammatory myofibroblastic tumor may mimic a malignant neoplasm both clinically and radiographically; however, following complete surgical resection, these tumors generally behave in an indolent fashion. Epithelioid inflammatory myofibroblastic sarcoma (EIMS) is an aggressive subtype of IMT, typically involving the abdomen. There is significant controversy and confusion regarding the pathogenesis and histogenesis of these uncommon tumors or tumor-like masses . Sep 27, 2021 · 1. 4–3. in 1954 because of its clinical and radiological behavior that mimics a malignant process [ 1 ]. Mar 3, 2022 · A database searches in the pathology archives by using the term “inflammatory myofibroblastic tumor” and” bladder” in our hospital department of pathology from 2010 to 2021. 1, 2 IMT occurs most commonly in the lungs, gastrointestinal tract, and liver, but rarely arises in the larynx. Inflammatory myofibroblastic tumor (IMT) is a rare benign lesion that has similarities to malignant lesions due to possible aggressive behavior, although its specific potential for malignancy has not been determined. . Introduction. We reviewed data from eight patients diagnosed with pulmonary IMT (PIMT) at our hospital with the aim of summarizing and analyzing the characteristics of PIMT to improve our understanding of May 23, 2022 · Inflammatory myofibroblastic tumor (IMT) is a heterogeneous malignancy with variable patterns of histology and behavior that primarily affects children and young adults. DISCUSSION. In this study, we report a subset of IMTs with histologic atypia and/or clinical aggressiveness that were analyzed for clinicopathologic features, outcome, and immunohistochemical expression of anaplastic lymp … Jul 20, 2023 · PATHOLOGY. Much of the confusion has been caused by the varying degrees of inflammatory cell infiltration noted on pathologic examination and the observation that the disease process, although usually Feb 12, 2015 · The World Health Organization (WHO) classifies inflammatory myofibroblastic tumors (IMTs) as distinct borderline lesions, while the physical history of these lesions can variably range from reactive to truly neoplastic . 1, 2, 3 Laryngeal IMT has been reported most commonly in the vocal folds, although a few cases in the aryepiglottic folds have been reported. zpjgrwmsmbdvjjbzpouinhdbnzoilpzrovekmbfhvxwfydaolz