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Hiramatsu S, Ataka R, Nakayama Y, Hirai M, Hirata A, Takeshima J, Hirai K, Hamasu S, Aoyama I, Hirose T. Gastric inflammatory myofibroblastic tumor presented with severe anemia and inflammation: a case report. Surg Case Rep 2024; 10:5. [PMID: 38185719 PMCID: PMC10772034 DOI: 10.1186/s40792-023-01802-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 12/24/2023] [Indexed: 01/09/2024] Open
Abstract
BACKGROUND Inflammatory myofibroblastic tumor (IMT) is a rare stromal tumor, often found in children and young adults, and most commonly occurs in the lungs. Surgical resection is considered the standard treatment for localized IMT, although only limited data exist. Gastric IMT in adults is extremely rare, and there are no established guidelines for its treatment. CASE PRESENTATION A 69-year-old male presented with persistent fatigue and weakness. Laboratory examination revealed severe anemia and inflammation. Upper gastrointestinal endoscopy at admission revealed a 40-mm type I softish tumor in the lesser curvature of the gastric body, without apparent hemorrhage. Repeated biopsies, including partial resection with snare, failed to give a definitive diagnosis. Computed tomography (CT) revealed a massive lesion at the gastric body, protruding into the gastric lumen, which was consistent with the gastric tumor. After admission, the patient developed anemia refractory to frequent blood transfusions despite the absence of apparent gastrointestinal bleeding. In addition, the patient had recurrent fevers of 38 °C or higher, and persistent high inflammatory levels. Fluorodeoxyglucose-positron emission tomography (FDG-PET) CT 1 month after the first visit exhibited an increased FDG uptake in the gastric tumor. In addition, this CT scan revealed a rapid increase in tumor size to 75 mm. It was suspected that the undiagnosed gastric tumor caused these serious clinical symptoms, and he underwent distal gastrectomy and cholecystectomy. The gross image of the tumor showed an 80-mm cauliflower-like shape with a gelatinous texture. The histopathological diagnosis was IMT. The postoperative course was uneventful, and the patient's symptoms subsided drastically, improving both anemia and systemic inflammation. The patient has shown no recurrence or relapse of the symptoms over one and a half years. CONCLUSIONS In this case, the tumor resection finally enabled the diagnosis of IMT and resolved the clinical symptoms. Despite its predominantly benign morphological nature, some cases of IMT present clinically adverse courses. Surgical treatment may lead to its final diagnosis and improvement of clinical symptoms.
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Affiliation(s)
- Sakura Hiramatsu
- Department of Surgery, Otsu Red Cross Hospital, 1-1-35 Nagara, Otsu City, Shiga, Japan
| | - Ryo Ataka
- Department of Surgery, Otsu Red Cross Hospital, 1-1-35 Nagara, Otsu City, Shiga, Japan.
| | - Yusuke Nakayama
- Department of Surgery, Otsu Red Cross Hospital, 1-1-35 Nagara, Otsu City, Shiga, Japan
| | - Miho Hirai
- Department of Gastroenterology, Otsu Red Cross Hospital, 1-1-35 Nagara, Otsu City, Shiga, Japan
| | - Ayako Hirata
- Department of Gastroenterology, Otsu Red Cross Hospital, 1-1-35 Nagara, Otsu City, Shiga, Japan
| | - Jun Takeshima
- Department of Surgery, Otsu Red Cross Hospital, 1-1-35 Nagara, Otsu City, Shiga, Japan
| | - Kenjiro Hirai
- Department of Surgery, Otsu Red Cross Hospital, 1-1-35 Nagara, Otsu City, Shiga, Japan
| | - Shinya Hamasu
- Department of Surgery, Otsu Red Cross Hospital, 1-1-35 Nagara, Otsu City, Shiga, Japan
| | - Ikuo Aoyama
- Department of Gastroenterology, Otsu Red Cross Hospital, 1-1-35 Nagara, Otsu City, Shiga, Japan
| | - Tetsuro Hirose
- Department of Surgery, Otsu Red Cross Hospital, 1-1-35 Nagara, Otsu City, Shiga, Japan
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Kimura N, Hiraki M, Akashi M, Miyahara K, Imamura M, Furukawa S, Samejima R. A rare case of inflammatory myofibroblast tumor of the stomach successfully treated by inverted laparoscopic and endoscopic cooperative surgery. Surg Case Rep 2023; 9:189. [PMID: 37902858 PMCID: PMC10616023 DOI: 10.1186/s40792-023-01767-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 10/14/2023] [Indexed: 11/01/2023] Open
Abstract
BACKGROUND An Inflammatory myofibroblastic tumor (IMT) is a rare intermediate malignancy characterized by myofibroblast proliferation and inflammatory cell infiltration. Various organs are the primary sites of origin. However, primary tumors originating in the stomach tend to be extremely rare, making the diagnosis difficult. Herein, we present a case of IMT originating in the stomach that was effectively managed using inverted laparoscopic endoscopic cooperative surgery (LECS). CASE PRESENTATION A 47-year-old male who was admitted to the hospital because of a submucosal tumor that was discovered during upper gastrointestinal endoscopy. The diameter of the tumor was approximately 20 mm. A KIT-negative gastrointestinal stromal tumor was suspected based on the biopsy findings. Therefore, partial resection of the stomach was performed using inverted laparoscopic and endoscopic cooperative surgery. Histopathological examination revealed collagen fiber proliferation from the submucosal layer to the muscular layer, accompanied by infiltration of spindle-shaped cells, lymphocytes, and numerous inflammatory cells. Immunohistochemistry results were positive for SMA and negative for CD34, desmin, and c-kit. IgG4-positive cells were observed with an IgG4/IgG ratio > 50%, and specific nuclei were positive for ALK. Therefore, IMT was diagnosed. This condition may be difficult to diagnose both before and after surgery because of its rarity and submucosal tumor-like morphology. CONCLUSION When a submucosal tumor originating in the stomach is observed, IMT should be considered. Partial resection of the stomach with LECS and immunohistochemical diagnosis may be useful.
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Affiliation(s)
- Naoya Kimura
- Department of Surgery, Japan Red Cross Society Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan
| | - Masatsugu Hiraki
- Department of Surgery, Japan Red Cross Society Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan.
| | - Michiaki Akashi
- Department of Pathology, Japan Red Cross Society Karatsu Red Cross Hospital, Karatsu, Saga, Japan
| | - Koichi Miyahara
- Department of Internal Medicine, Japan Red Cross Society Karatsu Red Cross Hospital, Karatsu, Saga, Japan
| | - Minori Imamura
- Department of Surgery, Japan Red Cross Society Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan
| | - Shunsuke Furukawa
- Department of Surgery, Japan Red Cross Society Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan
| | - Ryuichiro Samejima
- Department of Surgery, Japan Red Cross Society Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan
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Nakanishi M, Watari J, Tomita T, Nakanishi Y, Tsukamoto Y, Matsuo S, Uchihashi T, Miyazaki J, Tanaka H, Kojima S, Kuroda N, Matsuda I, Miwa H, Shinohara H, Hirota S. Gastric CLTC-ALK fusion-positive inflammatory myofibroblastic tumor showing an endoscopic superficial depressed-type appearance. HUMAN PATHOLOGY: CASE REPORTS 2019. [DOI: 10.1016/j.ehpc.2018.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Hayashi M, Kawakubo H, Mayanagi S, Nakamura R, Suda K, Wada N, Kitagawa Y. Gastric inflammatory myofibroblastic tumor treated with combined laparoscopic and endoscopic gastric wedge resection: a case report. World J Surg Oncol 2018; 16:161. [PMID: 30089486 PMCID: PMC6083513 DOI: 10.1186/s12957-018-1460-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 08/01/2018] [Indexed: 12/02/2022] Open
Abstract
Background Inflammatory myofibroblastic tumor is an uncommon soft tissue neoplasm rarely reported in the stomach. Case presentation We identified a tumor highly suggestive of poorly differentiated gastric adenocarcinoma in the lesser curvature of the stomach of a 53-year-old female during screening endoscopy. Although the patient’s gastric biopsy did not reveal cancer, the tumor configuration was strongly suspicious for malignancy, and we performed a gastric wedge resection using a combined laparoscopic and endoscopic method. The lesion was diagnosed as inflammatory myofibroblastic tumor based on its morphological and immunohistological features. Conclusions Inflammatory myofibroblastic tumor should be considered in the differential diagnosis of soft tissue tumors in the stomach. We present a case of inflammatory myofibroblastic tumor safely treated with combined laparoscopic and endoscopic gastric wedge resection.
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Affiliation(s)
- Masato Hayashi
- Department of Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Hirofumi Kawakubo
- Department of Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Shuhei Mayanagi
- Department of Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Rieko Nakamura
- Department of Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Koichi Suda
- Department of Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Norihito Wada
- Department of Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Yuko Kitagawa
- Department of Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
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Fan J, Huang B, Yang X, Yang M, He J, Nie X. ALK-positive gastric inflammatory myofibroblastic tumor in an adult with familial adenomatous polyposis and diffuse fundic polyposis. Diagn Pathol 2017; 12:68. [PMID: 28923119 PMCID: PMC5604288 DOI: 10.1186/s13000-017-0645-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 07/17/2017] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Inflammatory myofibroblastic tumor (IMT) of the stomach is extremely rare in adults and exhibits a variable biological behavior that ranges from frequently benign lesions to more aggressive variants. Here we report a case of gastric IMT with lymph node metastasis in an adult who had undergone total colectomy for familial adenomatous polyposis (FAP). CASE PRESENTATION A 37-year-old man presented gradual-onset epigastric discomfort; he had undergone total colectomy for FAP 6 years before. The upper endoscopy revealed diffuse polyposis in the body of stomach and a submucosal protruding tumor of approximately 4.5 × 3.5 cm in the gastric angular incisure, appearing like gastrointestinal stromal tumor. Histology after surgery verified the diagnosis of fundic gland polyposis (FGPs) and gastric IMT with lymph node metastasis. Both the primary IMT tissue and its metastatic lesion but not the FGP or FAP tissue were positive for anaplastic lymphoma kinase (ALK) on immunohistochemical staining. Fluorescent in situ hybridization confirmed the existence of ALK rearrangement in IMT tissues. However, the patient exhibited no abnormalities in microsatellite instability or mismatch repair-system components, including MSH6, MSH2, MLH1 and PMS2, in IMT, FGP or FAP tissue. CONCLUSIONS This case allowed for exploring the relationship among IMT, FGP and FAP and indicates that gastric IMT should be considered in the diagnosis of a gastric mass in patients with FAP. ALK may be a useful biomarker in the diagnosis of IMT and its metastatic lesions.
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Affiliation(s)
- Jun Fan
- Department of pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Bo Huang
- Department of pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xiuping Yang
- Department of pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Ming Yang
- Department of pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jun He
- Department of pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xiu Nie
- Department of pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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Gastric inflammatory myofibroblastic tumor presenting as fever of unknown origin in a 9-year-old girl. Eur J Gastroenterol Hepatol 2017; 29:68-72. [PMID: 27748672 DOI: 10.1097/meg.0000000000000742] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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