1. Introduction
Congenital adrenal hyperplasia (CAH) is caused by adrenal enzyme defects. Its most common variant, 21-hydroxylase deficiency (21OHD), leads to deficient production of cortisol and, most often, also aldosterone, together with increased steroid precursors and androgens [
1]. As a consequence, girls with classic CAH have variably virilized external genitalia at birth, with salt-wasting (SW), if there is a cortisol and aldosterone deficiency, or simply-virilized (SV), where the aldosterone production is not affected. Due to the Chicago classification from 2006, CAH belongs to the differences of sex development (DSD) [
2,
3]. In most Western countries, early genital surgery with the aim of achieving unambiguous female or male external genitalia in children with DSD was performed for many decades. Virilized girls with 46,XX-CAH have been surgically adapted in female direction. Depending on the severity of virilization, characterized by the Prader classification [
4], this included clitoral reduction surgery—in earlier years, clitoris amputation was also performed—as well as the removal of the common urethral and vaginal duct, the so-called urogenital sinus, and the reconstruction of the distal vagina [
5].
The parental concerns that atypical genitalia could have an impact on gender identity during infancy might lead parents to endorse early genital surgery. Arguments against surgery are physical damage, caused by poor cosmetic and functional results, and that is partially irreversible, as well as psychological damage in children, who are not able to decide by themselves in favor of surgery [
6]. Larger series with regard to these points are hardly available. Therefore, the aim of this European multicenter registry study was to investigate the long-term outcome of genital surgery and the patient-reported outcome concerning satisfaction in women with 46,XX-CAH.
3. Results
In total, 226 persons with 46,XX-CAH (221 with female and 5 with male gender identity) were recruited from several European countries. Of those 221 females, 109 (49.3%) had SW-CAH, 65 (29.4%) had SV-CAH, 33 (14.9%) had NC-CAH, and 14 (6.4%) had a rare form of CAH. Of the five individuals living as males, two had SW-CAH, one SV-CAH, one NC-CAH, and one a rare form of CAH. All of these five persons, except the one with NC-CAH, underwent some kind of genital surgery/Two persons definitively had masculinization surgery, and one was operated early with feminization surgery. The analysis below only considered the 174 girls with SW- and SV-CAH, because in these subgroups feminizing surgery wasmost often performed. At birth, 8/174 (4.6%) girls had clearly female external genitals and 155/174 (89.1%) had ambiguous external genitals. In 11 cases, this information was not mentioned within the charts. Prader classification stages were reported in 112 cases. Based on clinical report forms and patient-reported data, 140/155 girls (93%) underwent operational adjustments in the female direction. Age at first surgery was available in 106 patients.
Table 1 shows these basic data for the SW- and SV-CAH girls.
Table 2 shows the distribution of the different surgical procedures per CAH class. The highest percentage of both clitoris surgery and vaginoplasty was seen in the SW-CAH group. Data on the type of vaginoplasty were available for only 73 patients. The most common of these were the use of a Fortunoff flap and pedicled or free skin (
n = 55, 75.3%). Other procedures performed were labiaplasties (
n = 53) and perineal plastic surgeries (
n = 32). A vaginal dilatation was reported in 50 patients, though unfortunately data were missing in the majority of the patients.
3.1. Gynecological Examination
A gynecological examination was performed in 84 women. Median age was 28 years. A clitoris was present in 76 cases, while a clitoral hood was found in only 50 cases of them, and it was hypertrophied in 10 of these cases. Normal looking large labia were present in 65 women, while in another 19 women they rather reminded researchers of a scrotum or looked baggy. Small labia were present in 64 women, while in 20 cases no small labia could be seen. In 14 cases, an asymmetry was described. All details are given in
Table 3.
The overall cosmesis was rated good in 44 cases (54%), satisfactory in 35 cases (43%), and poor in 3 cases (3%) by the physician.
3.2. Patient-Reported Outcomes
Women were also surveyed about surgeries. Median age when answering the questionnaire was 28 years (range 15–64). Data differed considerably compared with the data from patients’ charts. While medical charts documented clitoris surgery in 122 persons and vaginoplasty in 121, women themselves reported clitoris surgery in 88 cases, 81 in the form of a clitoris reduction, and 7 as clitoridectomy. Vaginoplasty was reported by 90 females, and 52 women mentioned that they had undergone vaginal dilatation between the age of 9 to 15 years. Information about the specified number of surgical interventions could be given by 114 women The majority had one (40%) or two (34%) surgeries, while 15% underwent three procedures, and 10.5% had more than three operations. However, the information provided does not clearly indicate the nature of subsequent interventions.
Furthermore, 99 out of 174 women (52.9%) reported to have had complications, though in 40 of them no detailed information about the kind of complication was available. Eleven women had more than one complication.
Table 4 shows the rate of the most common complications. The highest rate for every complication was reported in SW-CAH.
Table 5 shows how surgeries and vaginal dilatation influenced the women’s lives. No woman mentioned clitoridectomy to have had a positive influence on her life, while nearly 60% confirmed this for clitoreduction. However, 10% denied this. The same rate of consent, respectively, denial, was reported about vaginoplasty. Concerning vaginal dilatation, 53% of the women said that it had a positive influence on their lives. Only about 11% denied this.
Table 6 summarizes the answers regarding women’s satisfaction with their genitals. A very high or high satisfaction rate was reported concerning cosmesis with 61.5% satisfaction and functionality with 61.9% satisfaction, while 14% and 15.9% of the patients were very unsatisfied or unsatisfied with cosmesis and functionality. Satisfaction concerning sex life was very high or high in 37.3% of the patients, very low or low in 28.9%, and 33.7% of the patients had no opinion.
Additionally, three questions were related to patients’ opinion on the need and timing of feminizing surgery in general. Overall, participants were questioned whether they thought that clitoral reduction surgery is necessary in girls, whether vaginoplasty in adolescence or adulthood with patient`s consent is better than before 6 months of age, and about the appropriate time for genital surgery in general (
Table 7). Participants were asked regardless of whether they themselves had had surgery.
4. Discussion
Early genital surgery in DSD has been the subject of debate for many years. Not only do medical outcome parameters play a major role in this, but human rights issues are also a concern. Finally, the discussion has led to many countries, including Germany, to put a general ban on genital surgery for young children with DSD. However, CAH organizations do not agree with such a general ban, because they believe that the gender identity of a girl with CAH generally does not change over time and, therefore, early surgery is justified to prevent harm due to delayed surgery. The majority of persons with 46,XX- CAH identify themselves as female, and continue to prefer early feminizing surgery [
8,
9,
10]. On the other hand there are reports about severely virilized 46,XX-CAH newborns assigned as males during childhood with a stable male identity in adulthood [
11]. The aim of this study was to reevaluate these points, specifically surgical outcome, satisfaction rates with cosmesis and function of the genitals, and timing of surgical procedures, within a larger cohort of women with 46,XX-CAH.
Current surgical genital procedures in CAH include a modification of the clitoris, an introitoplasty and, in cases of a urogenital sinus, lifting of the sinus with reconstruction of the distal vagina. Historical descriptions about clitoral surgery favored clitoridectomy, which remained common and persisted even into the early 1980s [
12]. Goodwin described the clitoris reduction with preservation of the glans and neurovascular bundle [
13]. This technique underwent further refinements [
14,
15] and is currently the gold standard. The type of vaginoplasty depends on the Prader stage [
4]. While a cut back procedure is sufficient in Prader stage I-II, higher stages require more challenging surgery. A common technique is the Fortunoff flap vaginoplasty combined with the pull-through technique depending on the length of the sinus urogenitalis [
16,
17]. The development of surgical techniques, especially with the intention to abandon clitoridectomy, suggest a better outcome of surgery nowadays. However, small series reporting long-term results about cosmesis and functionality after feminization do not really reflect this. Creighton et al. published long-term results of 44 adult women who underwent surgery in the early 1980s, of which 41% had a poor cosmetic result. Reintervention, mostly because of introitus or intravaginal stenosis, was necessary in 23 of 26 (89%) patients who received vaginoplasty [
18]. Insufficient functionality was described by Crouch et al. and Minto et al. All patients with clitoral surgery had decreased thermal and vibratory sensitivity compared to patients without surgery and controls. All participants also received a sexual function questionnaire, which showed that patients with surgery had a lower frequency of intercourse, vaginal penetration difficulties, and a higher rate of anorgasmia [
19,
20]. Sircili et al. presented long-term data from 34 patients, who underwent single-stage clitorovaginoplasty between 1986 and 2002. The neurovascular bundle was preserved in only seven cases. In the other 27 patients, blood supply was only maintained by the ventral mucosa. At examination, a clitoris was visible in all 7 patients with preservation of the neurovascular bundle, but only in 21 of the other patients. Persistence of the urogenital sinus was found in 11 patients. Functional results considering menstrual flow, appearance of the introitus, and possibility of sexual intercourse were judged as excellent in 67%, good in 25%, and regular in 8% of patients [
21]. Van der Zwan et al. reported about 40 patients. Of these, 36 underwent feminizing surgery, 13 as a single-stage clitorovaginoplasty at a median age of 3 years. Seven of them (54%) needed resurgery. Twenty patients underwent a two-stage procedure, clitoriplasty in early childhood, and vaginoplasty at a median age of 13. In this group, several patients needed additional surgery. In summary, 25 of the 36 patients (69%) underwent redo-operations [
22].
Concerning the time for surgery, the majority of physicians preferred one-stage surgery in early childhood. Arguments from the medical side are that the tissue still possesses high elasticity in the first 3–6 months of life due to the continuing influence of the maternal estrogens, as well as the use of excess skin in clitoral reduction surgery for vaginal plastic surgery [
23,
24,
25,
26,
27,
28]. From a psychological point of view, the clarity of the child’s genitals provides relief for parents [
29]. A smaller group of surgeons favored a two-stage procedure, whereby only clitoris reduction is carried out in early childhood and a vaginoplasty is performed only at the beginning of puberty. Reasons for this are lack of indication of a vaginal reconstruction before menarche, risk of vaginal constriction caused by inadequate stretching/dilatation after early vaginal reconstruction, and long-term risk of vaginal stenosis [
30,
31,
32,
33]. If the vaginoplasty takes place only at the beginning of puberty, the girls can be trained in dilatation performed by themselves. Finally, it should be mentioned that the decision of clitoreduction within the first 6 months of life does not take into account the often remarkable effect of clitoris reduction during medical treatment.
In our study, 140/155 (93%) of the females with ambiguous genitalia underwent genital surgery. Most commonly, the time for surgery was the first year of life (57/106; 53%) or within the first 4 years (34/106; 32%). In total, 71/119 (60%) underwent a one-stage procedure, while 48/119 (40%) had a two-stage procedure. In our study, 8.5% of the girls with clitoral surgery underwent a clitoridectomy. Although the gynecological examination revealed some shortcomings, the evaluation of the surgical results by the physicians was positive in 97% of cases. However, 14% of the women were (very) unsatisfied with the cosmesis (17/122) and functionality (18/126). Sex life in general was described as (very) satisfying by only 37% (62/166) of the women. This shows that there are discrepancies between physicians and affected persons themselves when it comes to judging the surgical results, and it underlines the necessity of patient-reported outcomes, because their subjective opinion is the most important. However, the satisfaction rates may also highlight an earlier lack of information about the physical condition at birth, since females compare themselves with healthy women.
In general, surgery and even vaginal dilatation had a positive influence in about 60% of the women, except in those with clitoridectomy, which was evaluated negatively in 86% of cases. Vaginal dilatation was performed by the young women themselves between the ages of 9 to 15 years. At this time, they can understand the advantage of dilatation and will be interested in having a functioning vagina. Concerning the right time for surgery, 76% (109/144) voted for infancy and childhood, while only 10% (14/144) preferred adolescence or adulthood. When especially asked if clitoreduction is necessary in girls, 69% (92/133) agreed, but only 35% (43/122) also voted for vaginoplasty during the first 6 months of life, while 49% (60/122) preferred the latter procedure with the patient’s consent.
In conclusion, this study underlines that the surgical outcome of feminizing procedures in individuals with 46,XX CAH can be optimized. Therefore, only surgeons trained in this kind of surgery should perform these procedures. Prospective registration of surgical procedures and their outcome may improve knowledge. Counseling about feminizing surgery in individuals with 46,XX-CAH should be performed in expert centers with -an multidisciplinary team to provide informed consent, especially in cases of a decision for early surgery.
The study has drawbacks since it has a cross-sectional design, and data retrieved retrospectively from the medical files are incomplete. Moreover, there is an incongruence among those data from the medical files and what patients remember, which can be seen when comparing the number of clitoral surgeries and vaginoplasties documented in the charts and what patients report. However, this might reflect the former policy not to involve patients in their situation so that they were not informed about early surgeries they underwent and do not remember. An important advantage of the study are the data of the gynecological examination and the patient-reported outcomes, though a possible bias might be that patients were primarily recruited via clinics that seem to have good experience with surgery in DSD. The gynecological examination enables a comparison about how the physicians rated the surgical results on the one side and the patients on the other side. Finally, the patients themselves gave statements about their opinions concerning time and the kind of surgery necessary. Moreover, the absence of the evaluation between specific surgical procedures and specific centers with the gynecological outcome and PRO is a great limitation.