Breast anatomy

Clinical anatomy of the breast, including radiological anatomy and BIRADS. Includes some Radiotherapy focused CT sections.

1. Anatomy of

Dr Ram Manohar Lohia In:

3. Introduction

5. Pectoralis major

6. External
oblique

7. Non lactating
breast

Breast during
lactation

Pectoralis minor
Pectoralis major

Pectoral fascia

Suspensory ligament

Submammary space

10. Avdilary tall (of Spence)

11. Structure

12. |

Tubercle of Montgomery

15. Alveolus (enlarged)

Contractile unit

Alveolus (acinus) O
Ductil Var
m Secretary cell <I>

Lactiferous (mammary) duct

Myoepithelial cells

Lactiferous sinus (ampulla)

Nipple opening

'Areol. i
sola Lactiferous duct

Lobe

Lactiferous sinus

16. Rib

Pectoralis
minor

Pectoralis
major

nent

17. Arterial Supply, Venous drainage,

Nerve supply

18. Right subclavian a

, Right common
arotid a.

Internal
thoracic a.

Sternal
branches

Medial mammary
aa.

|
Lateral mammary branches of
al branch f
L

21. Branches draining
into lateral thoracic vein

Internal Thoracic vein
along with perforators

22. al thoracic vein

24. Nerve supply;,

lateral mammary branch of
lateral pectoral cutaneous
branch of intercostal nerve
Intercostobrachial

Long thoracic nerve

Latissimus dorsi - Serratus anterior

External oblique

Posterior branches
lateral abdominal
cutaneous nerves

Anterior branches
lateral abdominal
cutaneous nerves

25. \ a

| Lymphatic Drainage

29. erents from apical nodes usually reach the inferior
odes (supraclavicular nodes).

30. °Gupredaevicusr end cihar naden

32. « Cänical N Staging

34. near its Junction WI e internal jugular vein.

Right internal jugular vein

NX

Thoracic
at fo (left lymphatic)
Right lymphatic duct >< / duct
N

SS

Left brachiocephalic vein Left internal jugular vein

Right subclavian vein —

Right brachiocephalic ____

vein eft subclavian vein

~ First rib (cut)

Superior __—

vena cava Thoracic
Drainage Drainage of PE = = (left lymphatic)
of right thoracic > À duct
lymphatic A duct Rib (cut)

duct f

35. Subareolar
plexus of

36. Pectoralis Deltopectoral

i To
minor

subclavian

N NN e, 7

Lateral AT

TN
To internal

| Sa ve
À
thoracic

à ay oiled
NOS
E Ye dem

/ 7
Posterior ee > To

$ contralateral
co pe
er) Collecting trunks mammary
> "EN E

LA Supratrochlear gland

A

To rectus
sheath &
subperitoneal
plexuses

R: Retropectoral route
T: Transpectoral route

40. 7

4 CHanatomyañd Radiothera
EG ASSociated'radiological an

41. 5]

[Detroit Receiving Hospital A NeckSpi 2.0 830s
Series 2/ IMAGE 112
-245.0 mm f Thickness 2

TH CONTRAST/ Zoom: 1.44 m

-JPEG2000 Lossless compression 9/13/2008 W402 L 40

43. JPEG 8.24:1 Q=90 (lossy)

=

pom Tip of the chin

Left internal
jugular vein

Rt Internal
jugular vein

44. JPEG 6.40:1 Q=90 (lossy)

Left common

carotid artery
Rt Subclavian

vein Ri Left

45. JPEG 6.55:1 Q=90 (lossy)

CCA- Common carotid artery

46. Lt brachiocephalic

47. Asma Begum, A DR.RMLIMS

Crassor21ada SPIRAL CT NECK AND THORAX

NecT

13/12/2013 11:30:02 AM

(74539-2013

Loe: 270.10

THK: 1.50

FS

R L

RO: 277

Tit: O ai

má: 287 ©: 80

Kvp: 120 vw: 360
Aca no; —

Page: 367 of 515

DFOV:42.4427.70m
IM: 367 SE: 5
D

48. cancer
normal
right breast css

CT Scan: Lung Cancer
Metastatic to Breast

52. m Lumpectomy

a Breast
Heart

53. m Lumpectomy
= Breast
= Heart

54. m Lumpectomy
| Breast
a Heart

15

55. m Lumpectomy
E Breast
a Heart

56. m Lumpectomy
a Breast
a Heart

57. m Lumpectomy
| Breast
a Heart

24

59. Supraclavicular
Axilla level 3
Axilla level 2
Axilla level 1

Internal mammary
Chestwall
Heart

60. Supraclavicular
Axilla level 3
Axilla level 2
Axilla level 1

Internal mammary

Chestwall
Heart

34

61. Supraclavicular
Axilla level 3
Axilla level 2
Axilla level 1

Internal mammary

Chestwall
Heart

35

62. Supraclavicular
Avilla level 3
Axilla level 2
Axilla level 1

Internal mammary

Chestwall
Heart

63. Supraclavicular
Avilla level 3
Avilla level 2
Axilla level 1

Internal mammary
Chestwall
Heart

37

64. Supraclavicular
Axilla level 3
Axilla level 2
Axilla level 1

Internal mammary
Chestwall
Heart

65. Supraclavicular
Axilla level 3
Axilla level 2
Axilla level 1

Internal mammary
Chestwall
Heart

43

73. De

99. A 50-year-old patient with mammographically dense breasts and increased risk of
developing breast cancer. Digital screening mammography findings (left) were
negative. The MBI study (center) displayed abnormal focal uptake which correlated
with suspicious enhancement on MRI (right). The final pathology was a 9 mm area

of ductal carcinoma in situ (DCIS).