Okubo Tetsuyuki, Kawada Masaya, Saikawa Daisuke, Yamamoto Kazuyuki, Suzuki Yoshinori, Kawarada Yo, Kitashiro Shuji, Okushiba Shunichi
Department of Thoracic Surgery, Sapporo Medical Center Tonan Hospital, Sapporo, Japan.
Kyobu Geka. 2015 Aug;68(9):731-4.
A 77-year-old man was referred to our hospital because of massive opacification of the right hemithorax on chest radiography. Chest computed tomography (CT) revealed a 25×18-cm heterogeneous tumor in the right hemi-thorax. Chest CT scan obtained 6 years before the referral showed an 8×2-cm homogeneous lipomatous mass in the anterior mediastinum suggesting a well-differentiated liposarcoma. The follow-up chest CT scan obtained 12 months before the referral showed a 4×2-cm heterogeneous solid component within the lipomatous mass of the mediastinum suggesting the development of a dedifferentiated liposarcoma. The tumor was completely resected through a median sternotomy and anterior right thoracotomy. The pathological diagnosis was dedifferentiated liposarcoma originating from a well-differentiated liposarcoma of the anterior mediastinum.
