Primary Omental-Mesenteric Myxoid Hamartoma of the Mesoappendix Incidentally Detected After Abdominal Trauma in a Child: Report of a Case

Nagae, Itsuro; Hamasaki, Yutaka; Tsuchida, Akihiko; Tanabe, Yoshihisa; Takahashi, S.; Minato, Shintaro; Takada, Ken; Koyanagi, Yasuhisa; Aoki, Tatsuya

doi:10.1007/s00595-005-3006-7

Cited by 9 publications

(4 citation statements)

References 5 publications

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“…The differential diagnosis of IMT is difficult even at a microscopic level, and immunohistochemical analysis helps to differentiate IMTs from other tumors, such as gastrointestinal stromal tumors, leiomyosarcomas, and inflammatory malignant fibrous histiocytomas [12]. …”

Section: Discussionmentioning

confidence: 99%

Inflammatory myofibroblastic tumor of the small intestine mimicking acute appendicitis: a case report and review of the literature

et al. 2016

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BackgroundInflammatory myofibroblastic tumor is a rare tumor of a borderline malignancy. Although it is commonly seen in children, the number of childhood cases in the current literature is limited. The lung is the most commonly affected location. However, cases that have been documented in the mesentery-omentum have mostly been located in the mesentery of the small bowel and not in the antimesenteric edge as in our patient.Case presentationA 6-year-old Greek boy was referred to our hospital with acute abdominal pain mimicking appendicitis. Ultrasound and computed tomography revealed a solid mass in the abdomen. The patient underwent laparoscopic resection of the tumor, and histopathology and immunohistochemical analysis favored an omental-mesenteric myxoid hamartoma, which is a variant of an inflammatory myofibroblastic tumor. The patient’s postoperative course was uneventful, and he has been asymptomatic during follow-up.ConclusionsInflammatory myofibroblastic tumor of the small intestine is a rare, benign neoplasm in children that should be considered as a possible cause of acute abdomen. A precise diagnosis can be made on the basis of histologic findings. Surgical excision is the treatment of choice.

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Section: Discussionmentioning

confidence: 99%

Inflammatory myofibroblastic tumor of the small intestine mimicking acute appendicitis: a case report and review of the literature

et al. 2016

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“…In addition to non-specific clinical symptoms, a variety of microscopic patterns are seen in IMT including a myxoid/vascular pattern, a compact spindle cell pattern and a hypocellular fibrous pattern, which makes it difficult to differentiate IMTs from other tumours such as inflammatory malignant fibrous histiocytoma, leiomyosarcoma, inflammatory cell-rich gastrointestinal stromal tumours and solitary fibrous tumours 9. However, immunohistochemical analysis helps to differentiate IMTs from these other tumours.…”

Section: Discussionmentioning

confidence: 99%

Inflammatory myofibroblastic tumour: an unusual presentation including small bowel obstruction and palpable abdominal mass

Cerier

Beal

Dillhoff³

2018

BMJ Case Reports

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A 41-year-old man with no medical history presented with 2 weeks of nausea, vomiting, a new palpable abdominal mass, constipation and a 14kgweight loss. On admission, CT abdomen and pelvis demonstrated a 6.9×3.7 cm soft-tissue abdominal mass deep to and invading the lower anterior abdominal wall with tethering of the urinary bladder and potential involvement of the urachus. Subsequently, a biopsy demonstrated a low-grade spindle cell neoplasm compatible with inflammatory myofibroblastic tumour with immunostain positive for smooth muscle actin and desmin and negative for CD21, CD117, DOG-1, TKE-1, mdm2, CD34 and ALK. One week following admission, he underwent en bloc excision of the mass including abdominal wall (umbilicus, portions of rectus sheath and muscle), bladder dome, right colon and a segment of small bowel. Final pathology of the mass confirmed an inflammatory myofibroblastic tumour, and his postoperative course was uneventful.

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“…Lymphomas and Castleman's disease must be also considered ( 17 ). In addition, other rare cases have been reported, including lymphangiomyomatosis ( 18 ), aggressive angiomyxoma ( 19 ) and non-neoplastic lesions, such as hamartoma ( 20 ), panniculitis ( 21 ), hematoma ( 22 ) and actinomycosis ( 23 ). As the ages of the patients vary, it is challenging to reach a diagnosis for such lesions according to the patient's age.…”

Section: Discussionmentioning

confidence: 99%

A mesenteric solid tumor with unusual features in a young male: A case report

Ichikawa

Maeda

Mizojiri

et al. 2017

Molecular and Clinical Oncology

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The current study presents a mesenteric mesenchymal tumor case, with unusual features in diagnostic imaging and histology. A 16-year-old male was admitted to the hospital with abdominal pain. Computed tomography (CT) revealed an abdominal mass, 2 cm in diameter. The results of contrast-enhanced CT, magnetic resonance imaging and 18F-fluorodeoxyglucose positron emission tomography indicated no specific features suggestive of its histology. Two arteries branching from the superior mesenteric artery were observed feeding the hypervascular tumor. After endoscopic and other laboratory findings revealed no additional lesions, the lesion was diagnosed as a primary mesenteric tumor. As the possibility of malignancy and future bleeding from this tumor could not be ruled out, a resection of the tumor was performed. During the surgery, the tumor, which was well circumscribed and hypervascular, was located in the mesentery of the jejunum. The resected tumor did not exhibit typical histological characteristics, and was labeled as ‘myxoid smooth muscle neoplasm of uncertain biologic potential’. At 2 years after surgery, the patient remained well without evidence of recurrence. As primary mesenteric tumors are rare, particularly in young patients, it is considered important that this type of unusual tumor be included in the differential diagnosis for mesenteric tumors.

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Primary Omental-Mesenteric Myxoid Hamartoma of the Mesoappendix Incidentally Detected After Abdominal Trauma in a Child: Report of a Case

Cited by 9 publications

References 5 publications

Inflammatory myofibroblastic tumor of the small intestine mimicking acute appendicitis: a case report and review of the literature

Inflammatory myofibroblastic tumor of the small intestine mimicking acute appendicitis: a case report and review of the literature

Inflammatory myofibroblastic tumour: an unusual presentation including small bowel obstruction and palpable abdominal mass

A mesenteric solid tumor with unusual features in a young male: A case report

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