diff --git a/lib/git_diff_parser/patch.rb b/lib/git_diff_parser/patch.rb
index 26011b6..6bcf9f8 100644
--- a/lib/git_diff_parser/patch.rb
+++ b/lib/git_diff_parser/patch.rb
@@ -3,6 +3,7 @@ module GitDiffParser
   class Patch
     RANGE_INFORMATION_LINE = /^@@ .+\+(?<line_number>\d+),/
     MODIFIED_LINE = /^\+(?!\+|\+)/
+    REMOVED_LINE = /^[-]/
     NOT_REMOVED_LINE = /^[^-]/
 
     attr_accessor :file, :body, :secure_hash
@@ -76,6 +77,27 @@ def changed_lines
       end
     end
 
+    def removed_lines
+      line_number = 0
+
+      lines.each_with_index.inject([]) do |lines, (content, patch_position)|
+        case content
+        when RANGE_INFORMATION_LINE
+          line_number = Regexp.last_match[:line_number].to_i
+        when REMOVED_LINE
+          line = Line.new(
+            content: content,
+            number: line_number,
+            patch_position: patch_position
+          )
+          lines << line
+          line_number += 1
+        end
+
+        lines
+      end
+    end
+
     # @return [Array<Integer>] changed line numbers
     def changed_line_numbers
       changed_lines.map(&:number)
diff --git a/spec/git_diff_parser/patch_spec.rb b/spec/git_diff_parser/patch_spec.rb
index 1a11508..eb5de2c 100644
--- a/spec/git_diff_parser/patch_spec.rb
+++ b/spec/git_diff_parser/patch_spec.rb
@@ -21,6 +21,25 @@ module GitDiffParser
       end
     end
 
+    describe '#removed_lines' do
+      it 'returns lines that were modified' do
+        patch_body = File.read('spec/support/fixtures/patch.diff')
+        patch = Patch.new(patch_body)
+
+        expect(patch.removed_lines.size).to eq(7)
+        expect(patch.removed_lines.map(&:number)).to eq [11, 36, 37, 38, 39, 40, 48]
+        expect(patch.removed_lines.map(&:patch_position)).to eq [4, 21, 22, 23, 24, 25, 36]
+      end
+
+      context 'when body is nil' do
+        it 'returns no lines' do
+          patch = Patch.new(nil)
+
+          expect(patch.removed_lines.size).to eq(0)
+        end
+      end
+    end
+
     describe '#changed_line_numbers' do
       it 'returns line numbers that were modified' do
         patch_body = File.read('spec/support/fixtures/patch.diff')