diff --git a/README.md b/README.md
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+# anonimizer
+
+データ匿名化プログラム
+
+## anonimizer.py
+
+- 獨協医科大学から提供された STAS CAD データ用に作成
+- フォルダ名の患者名の匿名化
+- 変換テーブル（csv ファイル）に基づきフォルダ名を書換え
+- TODO
+  - jpeg 画像の匿名化
+  - DICOM 画像の匿名化（あるいは RAW+MHD へ変換）
diff --git a/anonimizer.py b/anonimizer.py
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+import csv
+import os
+
+
+def process(year):
+    csv_file = f"{year}.csv"
+    target_dir = r"D:\usr\prog\STASanonimizer\stas"
+    target_dir = r"\\gabor\Data\ThoracicSurgery\STAS"
+    target_dir = os.path.join(target_dir, f"{year}手術症例")
+    with open(csv_file, "r") as f:
+        reader = csv.reader(f)
+        data = list(reader)
+        num_succeess = 0
+        num_error = 0
+        for row in data[1:]:
+            dir_from = os.path.join(target_dir, row[0])
+            dir_to = os.path.join(target_dir, row[1])
+            check = os.path.exists(dir_from)
+            if not check:
+                print(f"{dir_from} not exist")
+                num_error += 1
+            else:
+                os.rename(dir_from, dir_to)
+                print(f"RENAME {dir_from} -> {dir_to}")
+                num_succeess += 1
+    return num_succeess, num_error
+
+
+if __name__ == "__main__":
+    years = [2017, 2018, 2019]
+    num_succeess = 0
+    num_error = 0
+    for year in years:
+        s, e = process(year)
+        num_succeess += s
+        num_error += e
+    print(f"success {num_succeess}, error {num_error}")