Complete response of giant desmoplastic small round cell tumor treated with chemoradiotherapy: A case report

Zhang,Shuo; Zhang,Yong; Yu,Yong-Hua; Li,Jia

doi:10.3892/ol.2015.4024

Complete response of giant desmoplastic small round cell tumor treated with chemoradiotherapy: A case report

Authors:
- Shuo Zhang
- Yong Zhang
- Yong-Hua Yu
- Jia Li
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Affiliations: Department of Oncology, Jinan Central Hospital, Shangdong University, Jinan, Shandong 250002, P.R. China, Radiation Oncology Ward 2, Shandong Cancer Hospital and Institute, Jinan, Shandong 250117, P.R. China
Published online on: December 10, 2015 https://doi.org/10.3892/ol.2015.4024
Pages: 1069-1072

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Abstract

Desmoplastic small round cell tumor (DSRCT) is a rare tumor that mainly affects adolescents, and typically involves the abdominal and pelvic peritoneum. The present study reports one case of giant DSRCT, treated with concurrent chemoradiotherapy, and reviews the available medical literature. A 38‑year‑old man presented with a 3‑month history of pain in the left lower abdomen and nausea, associated with decreased appetite and weight loss. Computed tomography (CT) showed a 12.3x7.9 cm confluent solid mass in the lower abdomen and pelvic cavity. The patient underwent exploratory laparotomy and the final pathological diagnosis was DSRCT. Following laparotomy, the patient was treated with external beam radiotherapy to the whole abdomen and pelvis to a dose of 40 Gy plus a 20 Gy boost to the residual disease. The results indicated that synchronous chemotherapy with cyclophosphamide, adriamycin and cisplatin combined with radiotherapy significantly improved locoregional control of DSRCT and a complete response, as measured by CT assessment 2 months subsequent to radiotherapy. In conclusion, DSRCT is a rare malignancy requiring multidisciplinary treatment, including surgery, chemotherapy and radiotherapy. The results of the present study confirm that radiotherapy has a significant role in the treatment of advanced abdominal DSRCT and may contribute to durable remission.

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