raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2842

Penoscrotal transposition

Type
Morphological anomaly
Group
Disorder
Inheritance
Autosomal recessive, Not applicable, X-linked recessive
Age of onset
Infancy, Neonatal
Status
active

A rare congenital genital anomaly in which the scrotum is positioned superior and anterior to the penis. PST may present with a broad spectrum of anomalies ranging from simple shawl scrotum (doughnut scrotum) to very complex extreme transposition with craniofacial, central nervous system, cardiac, gastrointestinal, urological, and other genital (undescended testicles, hypospadias, chordee) malformations. Growth deficiency and intellectual disability may also be noticed (60% of cases).

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPenoscrotal transposition
frTransposition pénoscrotale
dePenoskrotale Transposition
esTransposición penoescrotal
itTrasposizione penoscrotale
nlPenoscrotale transpositie
ptTransposição peno-escrotal
plTranspozycja prąciowo-mosznowa
csPenoskrotální transpozice
ukПіноскротальна транспозиція
zh阴茎阴囊转位
trPenoskrotal transpozisyon

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q55.8NTBTattributedvalidated
ICD-11LB5YNTBTindexvalidated
MONDO0017285Evalidated
MeSHC536650Evalidated
UMLSC1868854Evalidated
GARD4273Evalidated
MedDRA10067287Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

20 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000811Abnormal external genitalia
HP:0000078Abnormality of the genital system
HP:0000069Abnormality of the ureter
HP:0000795Abnormality of the urethra
HP:0007598Bilateral single transverse palmar creases
HP:0001638Cardiomyopathy
HP:0002120Cerebral cortical atrophy
HP:0004209Clinodactyly of the 5th finger
HP:0000047Hypospadias
HP:0000347Micrognathia
HP:0000768Pectus carinatum
HP:0100600Penoscrotal transposition
HP:0000104Renal agenesis
HP:0000110Renal dysplasia
HP:0006610Wide intermamillary distance
Frequent (79-30%)
HP:0010751Chin dimple
HP:0000286Epicanthus
HP:0000269Prominent occiput
HP:0000049Shawl scrotum
Occasional (29-5%)
HP:0006443Patellar aplasia

Run the differential on the 12 obligate / very frequent terms

7

Sources for this card