| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Both female breasts | Is a | False | Both breasts | Inferred relationship | Existential restriction modifier |  | 
| Both male breasts | Is a | False | Both breasts | Inferred relationship | Existential restriction modifier |  | 
| Augmentation of bilateral breasts | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Removal of intact implants of bilateral breasts | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier | 2 | 
| Reduction plasty of bilateral breasts | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier | 2 | 
| Breast reconstruction, bilateral, with bilateral transverse rectus abdominis myocutaneous flaps (one pedicle / one free flap) | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier | 2 | 
| Subcutaneous mammectomy of bilateral breasts | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier |  | 
| Excision of bilateral breasts with excision of bilateral regional lymph nodes | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier |  | 
| Modified radical mastectomy, bilateral | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier |  | 
| Breast reconstruction, bilateral, with bilateral pedicle transverse rectus abdominis myocutaneous flaps | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier | 2 | 
| Simple mastectomy of bilateral breasts | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier |  | 
| Excision of bilateral breasts | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier |  | 
| Mammoplasty with injection into both breasts | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of bilateral silicone gel-filled breast implants | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Breast reconstruction, bilateral, with bilateral free transverse rectus abdominus muscle flaps | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier | 2 | 
| Extended simple mastectomy of bilateral breasts | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier |  | 
| Insertion of bilateral breast prostheses | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Removal of intact implants of bilateral breasts with capsulectomies | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Subcutaneous mammectomy of bilateral breasts with synchronous implants | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier | 2 | 
| Radical mastectomy of bilateral breasts | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier |  | 
| McKissock bilateral reduction mammoplasty | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier | 2 | 
| Strombeck bilateral reduction mammoplasty | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier | 2 | 
| Biesenberger bilateral reduction mammoplasty | Procedure site | False | Both breasts | Inferred relationship | Existential restriction modifier | 2 | 
| Subcutaneous mammectomy of bilateral breasts | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Excision of bilateral breasts with excision of bilateral regional lymph nodes | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 2 | 
| Modified radical mastectomy, bilateral | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Simple mastectomy of bilateral breasts | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 2 | 
| Excision of bilateral breasts | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Extended simple mastectomy of bilateral breasts | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 2 | 
| Subcutaneous mammectomy of bilateral breasts with synchronous implants | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 2 | 
| Radical mastectomy of bilateral breasts | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Augmentation of bilateral breasts | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| McKissock bilateral reduction mammoplasty | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Strombeck bilateral reduction mammoplasty | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Biesenberger bilateral reduction mammoplasty | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 2 | 
| Removal of intact implants of bilateral breasts | Procedure site - Indirect | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Reduction plasty of bilateral breasts | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Breast reconstruction, bilateral, with bilateral transverse rectus abdominis myocutaneous flaps (one pedicle / one free flap) | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Breast reconstruction, bilateral, with bilateral pedicle transverse rectus abdominis myocutaneous flaps | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Mammoplasty with injection into both breasts | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of bilateral silicone gel-filled breast implants | Procedure site - Indirect | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Breast reconstruction, bilateral, with bilateral free transverse rectus abdominus muscle flaps | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of bilateral breast prostheses | Procedure site - Indirect | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Removal of intact implants of bilateral breasts with capsulectomies | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Subcutaneous mammectomy of bilateral breasts with synchronous implants | Procedure site - Indirect | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| McKissock bilateral reduction mammoplasty | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 2 | 
| Strombeck bilateral reduction mammoplasty | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 2 | 
| Removal of intact implants of bilateral breasts | Procedure site - Indirect | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Mammography of bilateral breasts | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 | 
| Electrical impedance imaging of bilateral breasts | Procedure site - Direct | False | Both breasts | Inferred relationship | Existential restriction modifier | 1 |