A Small Supernumerary Xp Marker Chromosome Including Genes NR0B1 and MAGEB Causing Partial Gonadal Dysgenesis and Gonadoblastoma

Copy number variations of several genes involved in the process of gonadal determination have been identified as a cause of 46,XY differences of sex development. We report a non-syndromic 14-year-old female patient who was referred with primary amenorrhea, absence of breast development, and atypical genitalia. Her karyotype was 47,XY,+mar/46,XY, and FISH analysis revealed the X chromosome origin of the marker chromosome. Array-CGH data identified a pathogenic 2.0-Mb gain of an Xp21.2 segment containing <i>NR0B1/DAX1</i> and a 1.9-Mb variant of unknown significance from the Xp11.21p11.1 region. This is the first report of a chromosomal microarray analysis to reveal the genetic content of a small supernumerary marker chromosome detected in a 47,XY,+der(X)/46,XY karyotype in a non-syndromic girl with partial gonadal dysgenesis and gonadoblastoma. Our findings indicate that the mosaic presence of the small supernumerary Xp marker, encompassing the <i>NR0B1/DAX1</i> gene, may have been the main cause of dysgenetic testes development, although the role of <i>MAGEB</i> and other genes mapped to the Xp21 segment could not be completely ruled out.

Rupture and hemorrhage of a seminoma mixed with yolk sac tumors in 46XY partial gonadal dysgenesis: a case report and literature review

Background 46XY partial gonadal dysgenesis (PGD) is a rare subtype of disorder of sex development (DSD). 46YY PGD is a congenital disease with atypical chromosomal, gonadal, or anatomical sex development. The patient in this case report had male and female genitalia simultaneously. We created a flowchart of the differential diagnosis for clinicians. Case presentation A 41-year-old male was admitted to the hospital complaining of lower quadrant abdominal pain for 1 day. Physical examination revealed that his penis size was normal, but a urethral orifice was located in the perineum area between the scrotum and anus. One small testicle was in the left scrotum, but no testicle was present on the right. The patient’s abdomen was bulging, and he had lower abdominal pain. According to the emergency CT scan, a lesion (74*65 mm) was found in the right pelvis between the bladder and rectum. The lesion showed an unclear boundary and hematocele appearance. The lesion was removed by emergency surgery, and the pathology report indicated a mixed germ cell tumor with a seminoma and yolk sac tumors. Conclusion This article is a case report of germ cell tumors in 46XY PGD patients. The literature review summarizes the clinical diagnosis, and a flowchart is provided for physicians in future practice. The importance of this report is that it will help acquaint physicians with this rare disease and make the right initial clinical decision quickly through the use of this flowchart. However, the variants of special subtypes of 46XY DSD are myriad, and all the diagnoses could not be covered in one flowchart.

Transverse testicular ectopia: two rare adult cases and a review of literature

The first case is a 45-year-old man who presented with complaints of right-sided indirect hernia. On examination the left hemiscrotum was empty. Open hernioplasty and mesh fixation with orchiopexy of both testes were done in the same hemiscrotum, followed by MRI for further evaluation. The second case is a 26-year-old man who presented with penoscrotal hypospadias and empty left hemiscrotum, with the left testis not palpable in the scrotum or the inguinal region. MRI, karyotyping and laparoscopic orchidectomy were performed, followed by endocrinology work-up. From our experience, preoperative diagnosis with ultrasonography and/or MRI prior to diagnostic laproscopy is benifical when there is a strong suspicion of mullerian duct remnants. In other cases, diagnostic laparoscopy can be useful in diagnosis and management. Placement of both testes in the same hemiscrotum can be considered safe, although not ideal. Also, in cases with partial gonadal dysgenesis, laparoscopic orchidectomy along with excision of the mullerian remnantsis a better approach than orchiopexy.

Complications of the genitourinary system in girls with disorders of sex development and hypospadias

Series of clinical cases demonstrates functional state of lower urinary tract in girls with disorders of sex development (DSD) and hypospadias after the first stage of feminization. The study included 27 girls and women with DSD with hypospadias. Most of them have congenital adrenal hyperplasia (24), fewer girls have partial gonadal dysgenesis (1) and idiopathic virilization (2). Patients were examined before second stage surgical feminization in 115 years after the first stage. Concomitant pathology of the urogenital tract was detected in 19 (70%) patients. Urinary tract infection (UTI) was verified in 13 (48%), bladder dysfunction (BD) was diagnosed in 7 (26%), trapped menstrual secretions presented as hematometra, hematocolpos, and urine accumulation and stagnation in the vagina in anamnesis or as a result of preoperative studies were diagnosed in 9 (33%). Combination of the listed complications were observed in five patients (14%). Results of second stage of feminization confirmed connection of hypospadias with listed complications. This were detected in 11 (69%) patients after introitoplasty without separation of urinary and genital tracts (UGT). Introitoplasty with separation of UGT and elimination of hypospadias was complicated only four patients (36%), herewith the UTI and BD were eliminated. Hypospadias in girls with DSD is risk of development such complication as urinary tract infection, trapped menstrual secretions and bladder dysfunction. This circumstance requires change in surgical feminization tactics in girls with DSD, taking into account the anatomical components of genitalia malformations.