Japanese Journal of Clinical Oncology 2009 39(5):336; doi:10.1093/jjco/hyp042
© The Author (2009). Published by Oxford University Press. All rights reserved
Metastatic Melanoma on the Abdominal Wall
Kenjiro Namikawa and
Naoya Yamazaki
Dermatology Division
National Cancer Center Hospital
Tokyo, Japan
A 36-year-old woman was referred to our hospital for the treatment of malignant melanoma arising from the congenital nevus at her left side of the waist. She underwent local excision of the tumor with groin and pelvic nodal dissection. The pathological stage was 3B (pT3aN1bM0). Two years and 5 months after the surgery, dynamic computed tomography (CT) scan demonstrated a well-demarcated, extra-hepatic mass (6 x 4 cm in size) on the abdominal wall without any other distant metastasis (Fig. 1). Magnetic resonance imaging showed a high-intensity tumor on T2-weighted image, which suggested a multi-cystic tumor (Fig. 2). We suspected a localized distant metastasis of melanoma on the abdominal wall and resected the tumor including the peritoneum, diaphragm, liver and the 9th and 10th ribs for diagnostic and therapeutic purposes. The pathological examination found that the tumor was recurrent metastatic melanoma and the surgical margin was negative. Follow-up CT scan revealed multiple lung metastases, and she died of the disease 7 months after the second surgery.

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