Benign mesenteric lipomatous tumor in a child: a case report and literature review

Naoki Hashizume,Takato Aiko,Hidetaka Yamamoto,Hirotomo Nakahara,Yoshinao Oda,Minoru Yagi,Nobuyuki Saikusa,Saki Sakamoto,Suguru Fukahori,Hiroko Muta,Yoshinori Koga,Yoshiki Naito,Hiroaki Miyoshi,Shinji Ishii,Naruki Higashidate,Shiori Tsuruhisa,Yoshiaki Tanaka

doi:10.1186/s40792-020-01020-7

Naoki Hashizume, Takato Aiko + Show 15 more

Open Access

https://doi.org/10.1186/s40792-020-01020-7

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Abstract

BackgroundLipomatous tumors are the most common type of soft-tissue tumors. Benign lipomatous tumors are lipomas and lipoblastoma. We herein report a case of benign mesenteric lipomatous tumor and the largest collection of known benign mesenteric lipomatous tumors in children in the literature.Case presentationA 3-year-old girl presented with repeated dull abdominal pain and left abdominal mass swelling. On a physical examination, the child had a soft, moderately distended left abdomen that was not tender when palpated. Computed tomography and magnetic resonance imaging demonstrated a large fatty mass within the mesentery, measuring approximately 8 × 6 cm. The mass extended from the right upper quadrant to the lower pole of the kidneys. Laparotomy with resection of the mesenteric tumor was performed under general anesthesia. A well-capsuled tumor was a soft, yellow mass and found loosely attached to the mesenterium of the ileum. A histopathological examination demonstrated the lobular proliferation of mature adipocytes. Atypical lipoblasts were not seen. These features are compatible with benign lipomatous tumor, such as lipoma or lipoblastoma with maturation.ConclusionIn conclusion, benign mesenteric lipomatous tumors tend to be large in size over 10 cm in longitudinal length. However, resection is well tolerated in the vast majority of cases with benign post-operative courses.

Highlights

Lipomatous tumors are the most common type of softtissue tumors
In conclusion, benign mesenteric lipomatous tumors tend to be large in size over 10 cm in longitudinal length
Resection is well tolerated in the vast majority of cases with benign post-operative courses

Summary

Introduction

Lipomatous tumors are the most common type of softtissue tumors. Benign lipomatous tumors are “lipomas” and “lipoblastoma”. Lipoma is a rare benign lesion of mature adipose tissue It is a well-defined, noninvasive, and encapsulated mass that can be discovered in asymptomatic patients or may cause variable nonspecific symptoms, depending on its size and location [1, 2]. The mass had a clearly defined margin and a reticular pattern with an interposing fat component showing a reduced signal on fat suppression inversion recovery imaging (Fig. 2a, b). Based on these findings, the mass was suspected of being a benign softtissue tumor, most likely lipoma or lipoblastoma. Follow-up at 2 years revealed no evidence of recurrence

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