diff --git a/config/api_router.py b/config/api_router.py
index ce8228d..e741253 100644
--- a/config/api_router.py
+++ b/config/api_router.py
@@ -1,4 +1,11 @@
-from dicom.api.views import ListCreateDicomApi, RetrieveUpdateDeleteDicomApi
+from dicom.api.views import (
+    CreateCircleApi,
+    CreatePolygonApi,
+    ListCreateDicomApi,
+    RetrieveUpdateDeleteCircleApi,
+    RetrieveUpdateDeleteDicomApi,
+    RetrieveUpdateDeletePolygonApi,
+)
 from django.urls import include, path
 from rest_framework_simplejwt.views import TokenObtainPairView, TokenRefreshView
 from users.api.views import RegisterView
@@ -24,6 +31,33 @@ urlpatterns = [
                     RetrieveUpdateDeleteDicomApi.as_view(),
                     name="get_update_delete_dicom",
                 ),
+                path(
+                    "<str:slug>/polygon",
+                    CreatePolygonApi.as_view(),
+                    name="create_polygon",
+                ),
+                path(
+                    "<str:slug>/circle",
+                    CreateCircleApi.as_view(),
+                    name="create_circle",
+                ),
+            ]
+        ),
+    ),
+    path(
+        "shapes/",
+        include(
+            [
+                path(
+                    "polygon/<int:id>",
+                    RetrieveUpdateDeletePolygonApi.as_view(),
+                    name="get_update_delete_polygon",
+                ),
+                path(
+                    "circle/<int:id>",
+                    RetrieveUpdateDeleteCircleApi.as_view(),
+                    name="get_update_delete_circle",
+                ),
             ]
         ),
     ),
diff --git a/config/settings/base.py b/config/settings/base.py
index 10904c6..ad9848a 100644
--- a/config/settings/base.py
+++ b/config/settings/base.py
@@ -309,8 +309,6 @@ REST_FRAMEWORK = {
     "DEFAULT_SCHEMA_CLASS": "drf_spectacular.openapi.AutoSchema",
 }
 
-# django-cors-headers - https://github.com/adamchainz/django-cors-headers#setup
-CORS_URLS_REGEX = r"^/api/.*$"
 # By Default swagger ui is available only to admin user(s). You can change permission classes to change that
 # See more configuration options at https://drf-spectacular.readthedocs.io/en/latest/settings.html#settings
 SPECTACULAR_SETTINGS = {
diff --git a/image_markuper/dicom/api/serializers.py b/image_markuper/dicom/api/serializers.py
index 6164c58..9966824 100644
--- a/image_markuper/dicom/api/serializers.py
+++ b/image_markuper/dicom/api/serializers.py
@@ -1,5 +1,22 @@
-from dicom.models import Dicom
+from dicom.models import Circle, Coordinate, Dicom, Polygon
+from drf_spectacular.utils import extend_schema_field
 from rest_framework import serializers
+from rest_framework.generics import get_object_or_404
+
+
+def create_coordinate(coordinates, obj):
+    for coordinate in coordinates:
+        Coordinate.objects.create(
+            x=coordinate["x"],
+            y=coordinate["y"],
+            shape=obj,
+        )
+
+
+class CoordinateSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Coordinate
+        fields = ["x", "y"]
 
 
 class ListDicomSerializer(serializers.ModelSerializer):
@@ -16,9 +33,82 @@ class ListDicomSerializer(serializers.ModelSerializer):
         return Dicom.objects.create(**validated_data, user=self.context["request"].user)
 
 
+class BaseShapeSerializer(serializers.Serializer):
+    type = serializers.ChoiceField(choices=["circle", "polygon"])
+    image_number = serializers.IntegerField()
+    coordinates = CoordinateSerializer(many=True)
+
+
 class DicomSerializer(serializers.ModelSerializer):
     file = serializers.FileField()
+    shapes = serializers.SerializerMethodField("get_dicom_shapes")
+
+    @extend_schema_field(field=BaseShapeSerializer)
+    def get_dicom_shapes(self, obj):
+        return [x.serialize_self() for x in obj.shapes.all()]
 
     class Meta:
         model = Dicom
-        fields = ["file", "uploaded"]
+        fields = ["file", "uploaded", "shapes"]
+
+
+class PolygonSerializer(serializers.ModelSerializer):
+    coordinates = CoordinateSerializer(many=True)
+
+    class Meta:
+        model = Polygon
+        fields = ["id", "image_number", "coordinates"]
+        extra_kwargs = {"id": {"read_only": True}}
+
+    def create(self, validated_data):
+        if "coordinates" not in validated_data:
+            raise serializers.ValidationError
+        dicom = get_object_or_404(
+            Dicom, slug=self.context["request"].parser_context["kwargs"]["slug"]
+        )
+        polygon = Polygon.objects.create(
+            dicom=dicom, image_number=validated_data["image_number"]
+        )
+
+        create_coordinate(validated_data["coordinates"], polygon)
+        return polygon
+
+    def update(self, obj: Circle, validated_data):
+        Coordinate.objects.filter(shape=obj).delete()
+        create_coordinate(validated_data["coordinates"], obj)
+        return obj
+
+
+class CircleSerializer(serializers.ModelSerializer):
+    coordinates = CoordinateSerializer(many=True)
+
+    class Meta:
+        model = Circle
+        fields = ["id", "image_number", "radius", "coordinates"]
+        extra_kwargs = {"id": {"read_only": True}}
+
+    def create(self, validated_data):
+        if (
+            "coordinates" not in validated_data
+            and len(validated_data["coordinates"]) > 1
+        ):
+            raise serializers.ValidationError
+        dicom = get_object_or_404(
+            Dicom, slug=self.context["request"].parser_context["kwargs"]["slug"]
+        )
+        circle = Circle.objects.create(
+            dicom=dicom,
+            image_number=validated_data["image_number"],
+            radius=validated_data["radius"],
+        )
+
+        create_coordinate(validated_data["coordinates"], circle)
+        return circle
+
+    def update(self, obj: Circle, validated_data):
+        Coordinate.objects.filter(shape=obj).delete()
+        create_coordinate(validated_data["coordinates"], obj)
+        if "radius" in validated_data:
+            obj.radius = validated_data["radius"]
+            obj.save()
+        return obj
diff --git a/image_markuper/dicom/api/views.py b/image_markuper/dicom/api/views.py
index 9c248b1..e8dac7f 100644
--- a/image_markuper/dicom/api/views.py
+++ b/image_markuper/dicom/api/views.py
@@ -1,9 +1,15 @@
 from drf_spectacular.utils import extend_schema
 from rest_framework import generics
+from rest_framework.generics import get_object_or_404
 from rest_framework.parsers import FormParser, MultiPartParser
 
-from ..models import Dicom
-from .serializers import DicomSerializer, ListDicomSerializer
+from ..models import Circle, Dicom, Polygon
+from .serializers import (
+    CircleSerializer,
+    DicomSerializer,
+    ListDicomSerializer,
+    PolygonSerializer,
+)
 
 
 class ListCreateDicomApi(generics.ListCreateAPIView):
@@ -34,3 +40,43 @@ class RetrieveUpdateDeleteDicomApi(generics.RetrieveUpdateDestroyAPIView):
     parser_classes = [MultiPartParser, FormParser]
 
     lookup_field = "slug"
+
+
+class CreatePolygonApi(generics.CreateAPIView):
+    serializer_class = PolygonSerializer
+
+
+class CreateCircleApi(generics.CreateAPIView):
+    serializer_class = CircleSerializer
+
+
+class RetrieveUpdateDeletePolygonApi(generics.RetrieveUpdateDestroyAPIView):
+    serializer_class = PolygonSerializer
+
+    def get_object(self):
+        return get_object_or_404(
+            Polygon, id=self.request.parser_context["kwargs"]["id"]
+        )
+
+    @extend_schema(description="Note: coordinated are dropped on update")
+    def put(self, request, *args, **kwargs):
+        return self.update(request, *args, **kwargs)
+
+    @extend_schema(description="Note: coordinated are dropped on update")
+    def patch(self, request, *args, **kwargs):
+        return self.partial_update(request, *args, **kwargs)
+
+
+class RetrieveUpdateDeleteCircleApi(generics.RetrieveUpdateDestroyAPIView):
+    serializer_class = CircleSerializer
+
+    def get_object(self):
+        return get_object_or_404(Circle, id=self.request.parser_context["kwargs"]["id"])
+
+    @extend_schema(description="Note: coordinated are dropped on update")
+    def patch(self, request, *args, **kwargs):
+        return self.partial_update(request, *args, **kwargs)
+
+    @extend_schema(description="Note: coordinated are dropped on update")
+    def put(self, request, *args, **kwargs):
+        return self.update(request, *args, **kwargs)
diff --git a/image_markuper/dicom/models/__init__.py b/image_markuper/dicom/models/__init__.py
new file mode 100644
index 0000000..4b57082
--- /dev/null
+++ b/image_markuper/dicom/models/__init__.py
@@ -0,0 +1,3 @@
+# flake8: noqa
+from .base import Dicom
+from .blocks import BaseShape, Circle, Coordinate, Polygon
diff --git a/image_markuper/dicom/models.py b/image_markuper/dicom/models/base.py
similarity index 100%
rename from image_markuper/dicom/models.py
rename to image_markuper/dicom/models/base.py
diff --git a/image_markuper/dicom/models/blocks.py b/image_markuper/dicom/models/blocks.py
new file mode 100644
index 0000000..6245208
--- /dev/null
+++ b/image_markuper/dicom/models/blocks.py
@@ -0,0 +1,60 @@
+from dicom.models import Dicom
+from django.db import models
+from polymorphic.models import PolymorphicModel
+
+
+class BaseShape(PolymorphicModel):
+    dicom = models.ForeignKey(Dicom, related_name="shapes", on_delete=models.CASCADE)
+    image_number = models.IntegerField()
+
+    def serialize_self(self):
+        raise NotImplementedError
+
+    @property
+    def coordinates(self) -> [(int, int)]:
+        return self.shape_coordinates.all().values("x", "y")
+
+    def __str__(self):
+        return self.dicom.file.name
+
+
+class Coordinate(models.Model):
+    x = models.IntegerField()
+    y = models.IntegerField()
+
+    shape = models.ForeignKey(
+        to=BaseShape,
+        null=False,
+        blank=False,
+        on_delete=models.CASCADE,
+        related_name="shape_coordinates",
+    )
+
+
+class Circle(BaseShape):
+    radius = models.IntegerField()
+
+    def serialize_self(self):
+        return {
+            "id": self.id,
+            "type": "circle",
+            "image_number": self.image_number,
+            "radius": self.radius,
+            "coordinates": self.coordinates,
+        }
+
+    def __str__(self):
+        return f"circle on {self.dicom.file.name}"
+
+
+class Polygon(BaseShape):
+    def serialize_self(self):
+        return {
+            "id": self.id,
+            "type": "polygon",
+            "image_number": self.image_number,
+            "coordinates": self.coordinates,
+        }
+
+    def __str__(self):
+        return f"polygon on {self.dicom.file.name}"