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


METHODS
A 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.


CONCLUSIONS
Inflammatory 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.
Pediatric Department, "IASO" Maternity and Children's Hospital, 37-39 Kifisias Street, 15123, Marousi, Athens, Greece. alexoeconomopoulou@gmail.com.
Alexandra
A
Oeconomopoulou
Pediatric Department, "IASO" Maternity and Children's Hospital, 37-39 Kifisias Street, 15123, Marousi, Athens, Greece.
Yvelise
Y
de Verney
Pediatric Radiology Department, "IASO" Maternity and Children's Hospital, 37-39 Kifisias Street, 15123, Marousi, Athens, Greece.
Katerina
K
Kanavaki
Department of Pathology, Children's Hospital "Aghia Sophia", Thivon & Levadias, 11527, Goudi, Athens, Greece.
Kalliopi
K
Stefanaki
Department of Pathology, "IASO" Maternity and Children's Hospital, 37-39 Kifisias Street, 15123, Marousi, Athens, Greece.
Kitty
K
Pavlakis
Pediatric Surgery Department, "ΑΤΤΙΚΟΝ" University Hospital, National and Kapodistrian University of Athens, 1 Rimini Street, 12462, Haidari, Athens, Greece.
Christos
C
Salakos
D001064:Appendicitis / Q000175:diagnosis*; D002648:Child; D003937:Diagnosis, Differential; D006801:Humans; D007414:Intestinal Neoplasms / Q000175:diagnosis*; D007421:Intestine, Small; D008297:Male; D018204:Neoplasms, Connective and Soft Tissue / Q000175:diagnosis*
Appendicitis; Childhood; Inflammatory myofibroblastic tumor (IMT); Laparoscopy; Omental-mesenteric myxoid hamartoma (OMMH); Umbilical incision