| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Villonodular synovitis of first metatarsophalangeal joint | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 3 | 
| Villonodular synovitis of talonavicular joint | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 3 | 
| Villonodular synovitis of ankle | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Pigmented oral mucosal lesion | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Iron pigmentation of oral mucosa | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Exogenous pigmentation of oral mucosa | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Systemic exogenous pigmentation of oral mucosa | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Local exogenous pigmentation of oral mucosa | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Laugier-Hunziker syndrome | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Atrial myxoma with lentigines | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 2 | 
| Genital lentiginosis | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Multiple lentigines syndrome | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 3 | 
| Pigmentation of oral mucosa | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Lentigo maligna | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 2 | 
| Exogenous ochronosis (disorder) | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Ochronosis due to homogentisate 1,2-dioxygenase deficiency (disorder) | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Ochronotic arthritis | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Ocular albinism-lentigines-deafness syndrome | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 2 | 
| Peutz-Jeghers polyps of small bowel | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 4 | 
| Peutz-Jeghers syndrome | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 4 | 
| Lentigo | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Lentiginosis (disorder) | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Congenital/hereditary lentiginosis | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Buccal pigmentation due to Addison's disease (disorder) | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Ochronosis caused by hydroquinone (disorder) | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Nevoid lentiginosis (disorder) | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Zosteriform lentiginosis (disorder) | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Drug-induced oral pigmentation (disorder) | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Villonodular synovitis of hip | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 2 | 
| Villonodular synovitis of hip | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 2 | 
| Villonodular synovitis of knee | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Villonodular synovitis of knee | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Villonodular synovitis of ankle | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Villonodular synovitis of ankle | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 2 | 
| Villonodular synovitis of talonavicular joint | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 2 | 
| Villonodular synovitis of talonavicular joint | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 2 | 
| Villonodular synovitis of first metatarsophalangeal joint | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 2 | 
| Villonodular synovitis of first metatarsophalangeal joint | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Pigmented xerodermoid | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Pigmented xerodermoid | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 2 | 
| Pigmented scar | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Mercury pigmentation of skin | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Carotene pigmentation of skin | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Chrysoderma | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Conjunctival adrenochrome deposits (disorder) | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Corneal pigmentation | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Pigmentation of oral mucosa | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Conjunctival argyrosis | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Xeroderma pigmentosum, group F | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Pigmented oral mucosal lesion | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Exogenous pigmentation of oral mucosa | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Local exogenous pigmentation of oral mucosa | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Xeroderma pigmentosum, group A | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Carotene pigmentation of skin | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Conjunctival pigmentation | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Chlorpromazine pigmentation | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Acquired anterior capsular pigmentation | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Mercury pigmentation of skin | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Pigmented xerodermoid | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Xeroderma pigmentosum, group G | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Stromal corneal pigmentation | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Chrysoderma | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Anterior corneal pigmentation | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Xeroderma pigmentosum, group D | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Xeroderma pigmentosum | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Xeroderma pigmentosum, group B | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Drug-induced oral pigmentation (disorder) | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Progressive pigmentary dermatosis of Schamberg | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Buccal pigmentation due to Addison's disease (disorder) | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Conjunctival adrenochrome deposits (disorder) | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Ochronotic arthritis | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Laugier-Hunziker syndrome | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Corneal pigmentation | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Non-neurologic xeroderma pigmentosum | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Xeroderma pigmentosum, group C (disorder) | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Xeroderma pigmentosum, group E | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Xeroderma pigmentosum, variant form | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Iron pigmentation of oral mucosa | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Systemic exogenous pigmentation of oral mucosa | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Meconium pigmentation (morphologic abnormality) | Is a | True | Pigment deposition | Inferred relationship | Some |  | 
| Pigmented purpuric lichenoid dermatitis of Gougerot and Blum | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 4 | 
| Amalgam tattoo | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 3 | 
| Local exogenous pigmentation of oral soft tissue (disorder) | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 1 | 
| Chlorpromazine pigmentation | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 2 | 
| Drug-induced oral pigmentation (disorder) | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 2 | 
| Conjunctival adrenochrome deposits (disorder) | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 3 | 
| Perinatal jaundice from excessive hemolysis | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 1 | 
| Xeroderma pigmentosum, group B | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 3 | 
| Non-neurologic xeroderma pigmentosum | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 3 | 
| Pigmented xerodermoid | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 3 | 
| Xeroderma pigmentosum, group C (disorder) | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 3 | 
| Xeroderma pigmentosum, group G | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 3 | 
| Xeroderma pigmentosum, group F | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 3 | 
| Xeroderma pigmentosum, group A | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 3 | 
| Xeroderma pigmentosum | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 3 | 
| Xeroderma pigmentosum, group E | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 3 | 
| Xeroderma pigmentosum, group D | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 3 | 
| Xeroderma pigmentosum, variant form | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 3 | 
| Xeroderma pigmentosum and Cockayne syndrome complex (disorder) | Associated morphology | False | Pigment deposition | Inferred relationship | Some | 5 | 
| Pigment dispersion syndrome of bilateral eyes (disorder) | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 2 | 
| Pigment dispersion syndrome of bilateral eyes (disorder) | Associated morphology | True | Pigment deposition | Inferred relationship | Some | 3 |