PMC5899860_01
T2-weighted axial MR image, showing a multilobular mass consisting of cystic and solid components at the right inguinal site.
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Magnetic resonance imaging (MRI) revealed a multilobular tumor in the right inguinal region that was 55 mm in diameter and consisted of cystic and solid components (Figure 1). 18F-Fluorodeoxyglucose-positron emission tomography/computed tomography (FDG-PET/CT) showed the accumulation of FDG at the tumor and right external and obturator lymph nodes, which was attributed to metastasis of the malignant tumor (Figure 2).
Apparent accumulation of 18FDG at the right groin site and right pelvic lymph nodes on FDG/PET-CT.
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Magnetic resonance imaging (MRI) revealed a multilobular tumor in the right inguinal region that was 55 mm in diameter and consisted of cystic and solid components (Figure 1). 18F-Fluorodeoxyglucose-positron emission tomography/computed tomography (FDG-PET/CT) showed the accumulation of FDG at the tumor and right external and obturator lymph nodes, which was attributed to metastasis of the malignant tumor (Figure 2).
Tumor resection and reconstruction. (a) Skin markings on the right groin and femur. (b) Removal of the tumor with the abdominal wall (the arrow indicates the abdominal rectus and the asterisk the femoral vessels). (c) Reconstruction of the abdominal wall with a tensor lata muscle flap. (d) Femur site wound closure.
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The lower abdominal wall with skin and fascia defects was reconstructed with a fascia lata tensor muscle skin flap (Figure 3).
Resected tumor showing the involvement of fat tissue and the abdominal rectus.
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The tumor infiltrated fat tissue under the skin, inguinal ligament, and abdominal rectus (Figure 4).
Microscopic findings of an excised specimen of the tumor. A clear cytoplasm and round-shaped dense nuclei with severe atypia, suggesting cell adenocarcinoma (hematoxylin and eosin stain X200).
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Immunohistostaining showed that hepatocyte nuclear factor-1beta (HNF-1beta) was positive, p53 was negative, ER was negative, and progesterone receptor (PgR) was focally positive, indicating that most of the tumor presented the features of clear cell adenocarcinoma (Figure 5).