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Abstract

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ÀûÀ¸·Î »ç¿ëµÇ¾î ¿ÔÁö¸¸ Polymerase Chain Reaction (PCR)À» ÀÌ¿ëÇÑ °Ë»öÀÌ ½ÇÇèÀû ¿¬±¸¿Í
°¢Á¾ Á¾¾çµéÀÇ ¹Ì¼¼ÀüÀÌ¿©ºÎ¸¦ È®ÀÎÇÔ¿¡ ÀÖ¾î ´õ ¹Î°¨ÇÏ´Ù´Â »ç½ÇÀÌ Áõ¸íµÇ¾ú´Ù.
ÀÌ¿¡ ÀúÀÚµéÀº K 19¸¦ targetÀ¸·Î ÇÏ´Â Reverse Transcription Polymerase Chain
Reaction(RT-PCR)À» ÀÌ¿ëÇÏ¿© ±ÙÄ¡Àû À¯¹æÀýÁ¦¼úÀ» ½Ã¼ú¹ÞÀº À¯¹æ¾Ï ȯÀÚ¿¡¼­ÀÇ °ñ¼ö³»
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ÇÑ Æ¯¼º°ú °ü·ÃµÇ¾î ÀÖ´ÂÁö¸¦ »ìÆ캸°íÀÚ ÇÏ¿´´Ù.

Purpose : To determine accurately the extent of the disease and risk of recurrence is
important in enhancing the therapeutic success rate of breast cancer. Primary tumor
state and axillary node invasion were some well known factors to predict the prognosis
of breast cancer. However, some patients with early stage cancer developed systemic
metastasis later despite of little possibility of recurrence based on some previously
establised prognostic system. These results demand another approach to predict systemic
metastases in patient without gross evidence of further recurrence.
Mlicrometastases is a promising key to explain the recurrence in these patients and
micrometastases in bone marrow could raised the ongoing recurrence in skeletal system
which is the most frequent metastatic site in breast cancer. Therefore we tried to
determine the rate of micrometastasis in surgically resectable Korean breast cancer
patients and the relationship with clinicopathological characteristics of the cancer.
Materials and Methods : We studied bone marrow aspirate specimens from 38 patients
with breast cancer who underwent curative resection at Chonnam University Hospital
from January 1996 to February 1997. And reverse transcription polymerase chain
reaction (RT-PCR) to detect messenger RNA for cytokeratin 19 was performed.
Results : Metastases in bone marrow were detected in 8/38 patients (21.1%). No
statistically significant relationship existed between bone marrow metastasis and
clinicopathological parameters for predicting prognosis that consisted of tumor state,
lymph node invasion, histologic grade, steroid receptor, and c-erdB2 overexpression. In
particular, bone marrow metastasis developed even from ductal carcinoma in situ.
Conclusion : Bone marrow metastasis may be developed from the extremely early stage
of breast cancer and we can not make the corelationship between the bone marrow
metastasis and establised some prognostic factors. Based on these results, we
recommand the evaluation of bone marrow metastasis in all breast cancer patients and
require the close follow-up to allow more sensitive prediction of ongoing recurrence and
higher curability.

Å°¿öµå

Breast cancer; Micrometastases; RT-PCR;

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