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미만성거대

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로드 중.... (전체 텍스트 보기)

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S 539

― S-377 ―

미만성거대 B 세포 림프종 환자에서 면역화학요법 후 발생한 흉선 과형성 1예

단국대학교병원 내과1, 핵의학과2

*추영광1, 최 훈1, 이순일1, 이재현2

흉선은 연령에 따라 크기가 변하며 스트레스에 의해 위축되었다가 재생되는 림프기관이다. 흉선의 재생으로 흉선과형성이 발생될 수 있음이 알려져 있고 드물게 종양에서 화학요법 후 발생할 수 있음이 보고되고 있다. 화학요법 시행 후 흉선과형성을 보이는 경우에 종양의 재발과 감별하기 위해 침습적인 검사와 비침습적 추적관찰에 대한 다양한의견이 있다. 19세 여자가 우하복부 통증을 주소로 내원하였다. 복부CT에 서 회장 말단 주변에 1cm 안팎의 림프절 종대와 회장벽의 비후가 관찰되었다. 개복수술 시행하였고 복강내 회장과 유착된 6cm의 백색의 단단한 종괴가 관찰되었으며 이는 방광외벽까지 침범된 상태였다. 충수회장절제 및 부분적 방광절제술을 시행하였고 병리학적 소견은 미만 성 거대 B 세포 림프종으로 진단되었다. 상기 환자는 Rituximab 과 CHOP 병용요법을 6회 시행하였다. 화학요법 시행 후 양전자방출단층촬 영 및 흉부, 복부의 전산화 단층촬영상 완전관해 상태를 확인할 수 있었다. (그림1.A) 완전관해 3개월 후 흉부 전산화 단층촬영상 전종격동 에 조영 증강되는 종괴가 발견되었다. (그림1.B) 림프절 종대 및 림프절외 병소가 없고 흉선의 위치에서만 종괴가 관찰되어 면역화학요법 후 발생한 흉선 과형성의 가능성을 고려하여 추적관찰을 실시하여, 5개월 후 그 크기가 감소하였고(그림1.C) 8개월 후 흉선과형성은 크기 변화 없었으며 재발을 의심할 수 있는 병변도 관찰되지 않았다. (그림1.D) 1년 후 시행한 양전자방출단층촬영에서도 의미있는 고대사성 병 변을 발견할 수 없었다. (그림2) 면역학적 반동 현상에서 볼 때 항암치료 후 보이는 흉선과형성은 순수한 T 림프구 발생을 증가시키려는 활발한 세포면역의 반응이다. 악성 종양을 진단받고 항암치료 후 추적관찰 중이던 환자에게 전종격동종양이 발견된 경우 흉선과형성의 가능 성을 배제해서는 안 된다.

― ♣S-378 ―

Risk factors for recurrence of node-negative breast cancer with less than 1cm

Seoul National University Hospital, Dep. of Internal Medicine1, Seoul National University Bundang Hospital, Dep. of Internal Medicine2, Seoul National University Hospital, Dep. of General Surgery3, Seoul National University Bundang Hospital, Dep of General Surgery4, Seoul National University Hospital, Dep. of Radiation Oncology5, Seoul National University Bundang Hospital, Dep of Radiation Oncology6, Seoul National

University Hospital, Dep. of Pathology7, Seoul National University Bundang Hospital, Dep of Pathology8

*Kwon Ji hyun1, Kim Yu jung2, Oh Do youn1, Park So yeon8, Kim Jee hyun2, Chie Eui kyu5, Kim Sung won4, Han Wonshik3, Im Seock ah1, Kim In ah6, Kim Tae you1, Park In ae7, Noh Dong young3, Ha Sung whan5, Bang Yung jue1

Background: Prognosis and whether systemic adjuvant treatment is needed is an area of controversy in patients with node-negative early breast cancer with tumor size <1 cm, including T1mic. Patients and Methods: We performed retrospective review of medical records of consecutive patients with node negative, T1mic, T1a, T1b breast cancer, who received surgery between Jan 2000 and Dec 2006, in Seoul National University Hospital and Seoul National University Bundang Hospital. Microinvasive disease was defined according to the AJCC criteria, as extension of cancer cells beyond the basement membrane, with no single invasive foci ≤ 1mm in greatest dimension. Results: Out of 5021 diagnosed with breast cancer, a total of 375 patients were enrolled for this study (T1mic:120, T1a:93, T1b:162). Median age at diagnosis was 49.BCS was performed in 197 patients (52.5%) and adjuvant treatment was given as follows: hormonal treatment in 234 patients (62.7%); chemotherapy in 63 patients (16.9%) and radiotherapy in 143 patients (38.3%). T1mic patients had higher proportion of ER(-) (58.5% vs 37.4% vs 25.5%), PR(-) (68.6% vs 50.5 vs 41.1%) and HER2 3+ disease by IHC (44.9% vs 24% vs 13.5%) (p < 0.001) than T1a or T1b patients. Other variables including age, p53 status were not different among three groups. After a median follow up of 44.3 months, 10 patients have relapsed (T1mic:4(3.3%), T1a:2(2.1%), T1b:4 (2.4%)), with distant recurrence identified in three patients (T1mic: 1, T1b: 2). Age younger than 35 years, negative estrogen receptor status were significantly associated with high recurrence rate. Patients with both of ER and PR negative status, and with triple negative ER, PR, HER2 were also have poor disease-free survival rate. Conclusion: Patients with pT1mic, pT1a and pT1b, node-negative disease have excellent prognosis in general, but have a limited but substantial risk of recurrence even with short term follow up, especially in young age, negative hormonal receptor status, and triple negative breast cancer group.

Longer follow up and nation-wide study is needed to find small subset of patients who need adjuvant systemic therapy.

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