Thoracoscopy-Assisted Removal of a Giant Thymolipoma in Patient With Reduced Respiratory Function

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  • Usui Hidehito
    Department of Surgery, Kanagawa Children’s Medical Center Department of Surgery, Yokohama City University
  • Kitagawa Norihiko
    Department of Surgery, Kanagawa Children’s Medical Center
  • Shinkai Masato
    Department of Surgery, Kanagawa Children’s Medical Center
  • Mochizuki Kyoko
    Department of Surgery, Kanagawa Children’s Medical Center
  • Yagi Yuuma
    Department of Surgery, Kanagawa Children’s Medical Center
  • Kawakita Issei
    Department of Surgery, Kanagawa Children’s Medical Center
  • Tsuzuki Yukihiro
    Department of Surgery, Kanagawa Children’s Medical Center
  • Sinohara Shota
    Department of Surgery, Kanagawa Children’s Medical Center
  • Kido Tetsuo
    Department of Respiratory Surgery, Nanko Hospital

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Other Title
  • 呼吸機能低下を呈し，胸腔鏡補助下に摘出した巨大胸腺脂肪腫の1例
  • コキュウ キノウ テイカ オ テイシ,キョウコウキョウ ホジョ カ ニ テキシュツ シタ キョダイ キョウセン シボウ シュ ノ 1レイ

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Abstract

<p>A thymolipoma is a rare benign tumor of the anterior mediastinum, which is usually asymptomatic and incidentally identified. Here, we report a case of a giant thymolipoma in a patient with reduced lung capacity in the course of seven years. An 11-year-old girl had been diagnosed with thymic hyperplasia by open biopsy and followed up with imaging evaluation for seven years. She visited our hospital owing to her family’s relocation to our city. Although it was asymptomatic, a close examination was performed as the tumor tended to grow, albeit slowly. MRI showed that it was composed of a mixture of thymus-like soft tissue components and fat components, suggestive of a thymolipoma. Her % lung capacity had decreased to 70%, and a tumor resection was planned. We approached the tumor through the bilateral thoracic cavity with the patient in the supine position. After thoracoscopic dissection of the thymic vein, the tumor was divided and resected through a bilateral axillary incision, resulting in a safe and minimally invasive resection. Respiratory function test results were normalized after six months, and the patient remains under observation without recurrence at two years postoperatively.</p>

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