J Korean Soc Radiol.  2016 Jan;74(1):71-74. 10.3348/jksr.2016.74.1.71.

Anterior Abdominal Wall Leiomyoma Arising De Novo in a Fertile Women: A Case Report

• Cho JY
• Woo JY
• Hong HS
• Yang I
• Lee Y
• Hwang JY
• Kim HM
• Shin MK

• KMID: 2150466
• DOI: http://doi.org/10.3348/jksr.2016.74.1.71

Abstract

Abdominal wall leiomyoma arising de novo is very rare, hence the reported imaging findings of this disease are also rare. We reported the case of a 33-year-old woman who presented with an abdominal wall mass without antecedent gynecological surgeries. The initial abdominal computed tomography (CT) showed thickening of the left rectus abdominis and the loss of intervening fat between the rectus abdominis and the lateral abdominal muscles. After 8 months, the follow-up contrast-enhanced CT and ultrasonography (US) showed a lentiform-shaped mass with isodensity to the adjacent muscles. The US-guided biopsy was consistent with leiomyoma.

MeSH Terms

Abdominal Muscles
Abdominal Wall*
Adult
Biopsy
Female
Follow-Up Studies
Gynecologic Surgical Procedures
Humans
Leiomyoma*
Multidetector Computed Tomography
Muscles
Rectus Abdominis
Tomography, X-Ray Computed
Ultrasonography

Figure

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  Fig. 1 A 34-year-old woman presenting with a palpable abdominal mass. A. The contrast-enhanced axial CT scan shows thickening of the left rectus abdominis muscle (arrows) and loss of intervening fat between the left rectus abdominis and the lateral abdominal wall muscles in contrast with the other side (open arrows). B. After 8 months, nonenhanced axial CT scan reveals a well-circumscribed mass (asterisk) with hypodensity, as compared with adjacent muscles. C. On the contrast-enhanced axial CT scan, the mass (arrows) is homogeneously enhanced and nearly isodense to the adjacent muscles. It is located in the left rectus abdominis and lateral abdominal muscles. D. The ultrasonography image shows a well-defined and mixed hypoechoic mass with a lentiform shape (asterisk). E. Microscopy of the needle biopsy specimen shows the diffuse proliferation of spindle-shaped cells but no atypia (hematoxylin and eosin, × 100). F, G. In the immunohistochemical stain, the spindle-shaped cells show immunoreactivity for smooth muscle actin and desmin (× 200).

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