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Case Reports
. 2026 Jan 8:65:103339.
doi: 10.1016/j.eucr.2026.103339. eCollection 2026 Mar.

Prostatic development and verumontanum in a 46,XX karyotype : An embryological paradox redefining diagnostic algorithm for testicular DSD

Rifqi Yanda Muhammad  1 , Joko Pitoyo  2
Affiliations
Case Reports

Prostatic development and verumontanum in a 46,XX karyotype : An embryological paradox redefining diagnostic algorithm for testicular DSD

Rifqi Yanda Muhammad et al. Urol Case Rep. .

Abstract

Evaluation of 46,XX Disorders of Sex Development (DSD) with severe virilization often yields inconclusive results. We report a case where alternative diagnostics resolved a significant phenotype-karyotype discordance. A 2-year-old with a 46,XX karyotype and penoscrotal hypospadias was evaluated. Diagnostic urethroscopy revealed definitive prostatic tissue and a verumontanum. These findings provided anatomical evidence of Wolffian differentiation, distinct from Müllerian persistence, and incompatible with Congenital Adrenal Hyperplasia (CAH). Identifying the prostate established the diagnosis of 46,XX Testicular DSD, shifting management from gonadectomy to hypospadias repair. Urethroscopy is indispensable for resolving diagnostic discrepancies missed by standard protocols.

Keywords: 46 XX; DSD; Proximal hypospadias; UDT; Urethroscopy.

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Figures

Fig. 1
Fig. 1
(A, B, and C) Penoscrotal hypospadias with chordee, (D) Right palpable inguinal undescended testis, and (E) Left intrascrotal testis.
Fig. 2
Fig. 2
Karyotyping result revealed 46,XX with negative SRY.
Fig. 3
Fig. 3
(A) Verumontanum and (B) Prostate from urethroscopy evaluation.
Fig. 4
Fig. 4
(A and B) Gross structure of right testicle and (C) right orchidopexy with 3-point fixation method.
See this image and copyright information in PMC

References

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