case_images: PMC6677788_01
case_images: A. Magnetic resonance imaging showing a voluminous tumor on the left side of the pelvis and a retroperitoneal liposarcoma was suspected. Arrow head indicates a well-differentiated component. B. A computed tomography of the abdomen indicating that the tumor might be invading the descending colon. Arrow head indicates sigmoid colon invasion. C. Surgical specimen with in-block resection of DDLS and a sigmoid colon. DDLS appears to be 15 x 10 x 7.5 cm in size. Arrows indicate a resected sigmoid colon. D. The histopathological diagnosis was dedifferentiated liposarcoma (DDLS). Scale bar = 200 mum.
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case_images: Magnetic resonance imaging (MRI) of the abdomen showed a solid mass measuring 13 cm in diameter on the left side of the pelvis and a liposarcoma containing a well-differentiated component was diagnosed (Fig. 1A). A high-resolution computed tomography (HRCT) of the abdomen revealed that the tumor was suspected to invade the left ureter and descending colon (Fig. 1B). The tumor size was 13 x 8 x 7.5 cm and postoperative pathological findings indicated DDLPS with invasion to the sigmoid colon (Fig. 1C, D).
case_images: A. A computed tomography of the chest showing a band-like shadow with ground-glass opacity (GGO) in the apical segment (S1) of the right upper lobe of the lung. A GGO that contains a solid component was also detected in the posterior segment (S2). Both these two regions were considered as early stage lung cancer (S1: cT1aN0M0 Stage1A1, S2 cT1bN0M0 Stage1A2). B. Macroscopic findings of the tumor. Pathological diagnosis of the S1 region was non-invasive adenocarcinoma (pT1bN0M0, Stage1A2). The S2 region was diagnosed as invasive adenocarcinoma (pT1aN0M0, Stage1A1).
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case_images: Moreover, HRCT of the chest detected two ground-glass opacities (GGO) in the apical segment (S1) and posterior segment (S2) of the right upper lobe of the lung and was considered to be early stage lung cancer (Fig. 2A). Four months after the retroperitoneal liposarcoma resection, a right upper lobectomy for suspected lung cancer was performed via video-assisted thoracoscopic surgery (VATS) (Fig. 2B).
case_images: A. A HRCT of the chest detected a nodule with a maximum diameter of 22 mm in the left lower lobe of the lung. B. Macroscopic findings of the metastatic tumor. The nodule appears white and lobular. Pathologically, no pleural invasion was observed. C. Pathological diagnosis of the tumor was metastasis from DDLS. Scale bar = 200 mum.
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case_images: Twenty months after the initial surgery, a HRCT of the chest detected a tumor with maximum diameter of 22 mm in the left lower lobe of the lung (Fig. 3A). The result of a respiratory function test on the patient showed that her current respiratory function was not sufficient to allow a left lower lobectomy, therefore, in order to preserve the superior segment of the lower lobe (S6), a left basal segmentectomy (S8+S9+S10) was conducted (Fig. 3B). Pathological findings showted DDLPS with invasion to the sigmoid colon (Fig. 3C).