A pseudohermaphroditism characterized by undermasculinization in males including hypoplastic-to-normal internal genitalia with female external genitalia and the absence of a prostate, impaired testicular synthesis of testosterone resulting in insufficient formation of dihydrotestosterone during fetal development and resulting in pseudohermaphroditism in males that has_material_basis_in homozygous or compound heterozygous mutation of the HSD17B3 gene on chromosome 9q22.