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중추신경계와 폐를 침범한 말초

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S 541

― S-381 ―

중추신경계와 폐를 침범한 말초 T세포 림프종 1예

한양대학교 의과대학 내과학교실

*구태연, 박병배, 김원준, 박혜선, 김혜영, 김주형, 최정혜, 김인순, 이영렬

말초형 T 세포 림프종은 B세포 림프종에 비해 림프절 외 침범이 많고 항암요법에 반응이 적어 예후가 좋지 않은것으로 알려져 있다. 이 중 비특정 말초 T 세포 림프종은 폐나 신경계의 침범이 매우 드물고 이에 대한 표준 치료는 정립되어 있지 않기 때문에 환자별로 치료자의 판단에 따라 적절한 치료전략을 세워야 한다. 본 증례는 폐와 신경계를 침범한 비특정 말초 T 세포 림프종의 1예로 IMEP 복합항암화학요법 과 척추강내 항암화학요법으로 관해 유도에 성공하였고 관해 후 치료로서 고용량 항암화학요법 및 자가조혈모세포이식을 시도한 경우이다.

62세 남자가 우측 운동쇠약 및 감각이상을 주소로 내원하였다. 뇌척수액 검사에서 비전형 림프구가 발견되었고, 흉부 단순촬영에서 양측 폐야에 병변이 발견되어 총생검을 시행하여 비특정 말초 T 세포 림프종으로 진단되었다. 3주기 IMEP(ifosfamide, methtrexate, etoposide and prednisone) 복합항암화학요법과 5회의 척추강내 항암 화학요법으로 관해 유도에 성공하였고 고용량 항암화학요법 및 자가 조혈 모세포 이 식을 시행하였다. 이식 후 20일째 시행한 골수 조직검사에서 성공적인 생착을 확인하였고, 이식 후 21일째 뇌척수액 세포조직검사와 양전자 방출단층촬영을 통하여 완전 관해를 확인하였다. 현재까지 이식 후 4개월 동안 재발의 증거는 관찰되지 않고 있다. 말초형 T 세포 림프종 치료에 흔히 사용하는 anthracycline을 포함하지 않은 IMEP 복합 화학요법을 이용하여 관해유도를 시도 하여 완전 관해에 성공하였다. 특히 중추신경계의 침범이 있는 경우에 이 증례에서처럼 중추 신경계를 통과하는 methotrexate나 cytarabine이 포함되는 복합 화학요법을 시행 한 다면 중추신경계에 대한 치료에 도움을 줄 수 있을 것이다. 재발을 줄이고 생존율을 향상시킬 목적으로 고용량 항암화학요법 및 자가조혈모 세포이식술을 관해 후 치료로서 시행 하긴 했지만 아직까지는 그 효용성에 대해서 판단 할 수 없으며 오랜 기간 추적관찰을 해 보아야 하겠 다.

― ♣S-382 ―

Treatment responses and clinical outcomes according to breast cancer subtypes in patients treated with palliative doxorubicin and cyclophosphamide

1Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea

*Seong Yoon Yi, Do Hyoung Lim, Sang Hoon,Ji, Min Jae Park, Kyoung Ha Kim1, Hyo Song Kim1, Myung Hee Chang1, Hyun Jung Jun1, Ji Eun Uhm1, Yeon Hee Park1, Young-Hyuck, Im1,

Background: Breast cancer is currently regarded as a heterogeneous disease classified into various molecular subtypes. To analyze the treatment responses and clinical outcomes according to molecular subtypes in metastatic breast cancer patients treated with palliative doxorubicin/cyclophosphamide (AC) chemotherapy. Methods: Retrospective analysis of 145 metastatic breast cancer patients treated with palliative doxorubicin/cyclophosphamide from 2001 to 2007, who had assessable immunohistochemical data for ER, PR, and HER-2/neu receptor status.

Molecular subtypes were defined as hormone receptor positive (HR+; ER+ and/or PR+ regardless of HER2/neu), HER-2/neu receptor positive, triple negative (TN; ER-, PR-, HER2/neu-). We analyzed the treatment responses for palliative AC chemotherapy, overall survival, and determinded their associations with clinical variables: age, stage at diagnosis, adjuvant treatment, total numbers of palliative chemotherapy, and metastatic sites. Results:

Of the 145 patients tested, 92 (63.4%) were HR+, 21 (14.5%) were HER2+, and 32 (22.1%) were TN. Overall response rate to palliative AC was 46.7% in HR+, 33.3% in HER2+, 43.7% in TN subtype. Among breast cancer subtypes, there were no differences in age, stage at diagnosis, total number of palliative chemotherapy, incidence of visceral metastasis, and metastatic site (except to brain). Breast cancer-specific survival differed significantly among the subtypes; HER2+ and TN subtypes showed poorest survival (p=0.001, p<0.001, respectively). Compared with HR+, non-HR (HER2+ and TN) subtypes were associated with increased risk for brain metastasis. (HR+; 14.1%, HER2+; 28.6%, TN; 25.0%). Conclusion: The response to palliative AC chemotherapy did not differ by subtypes. Despite of chemosensitivity for palliative AC, HER2+ and TN subtypes showed shorter overall survival than HR+ subtype. The poorest prognosis of HER2+ and TN subtypes could be explained by further prospective studies to show tumor characteristics and/or the resistance to drug therapy. In addition, the way to control brain metastasis combined with systemic treatment should be improved specially for HER2+ and TN patients who were refractory to conventional chemotherapy.

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