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is a significant concern for physicians. Central
5 h- J* W* h4 k, Y! Uprecocious puberty (CPP), which is mediated
6 N, W3 J' Y- y+ J& L' X( Bthrough the hypothalamic pituitary gonadal axis, has" M0 O3 }5 g1 p0 A m7 u' [
a higher incidence of organic central nervous system
4 ]9 o/ ^, ~; zlesions in boys.1,2 Virilization in boys, as manifested
$ A* g" |& F) w4 ]by enlargement of the penis, development of pubic, c2 y! V# S" g
hair, and facial acne without enlargement of testi-9 A! f& E. m7 K
cles, suggests peripheral or pseudopuberty.1-3 We
$ R1 s2 u( P- v& r( b+ z% Rreport a 16-month-old boy who presented with the2 q; B$ t7 C; l
enlargement of the phallus and pubic hair develop-
2 [5 J1 U- N2 k; E0 {* ament without testicular enlargement, which was due! R& Q/ B' U: O' `
to the unintentional exposure to androgen gel used by; J1 _& j1 W' [3 K
the father. The family initially concealed this infor-; l9 T. l0 g$ ~6 C$ ~8 A# c/ c
mation, resulting in an extensive work-up for this- `; O) X; T9 c6 H. B
child. Given the widespread and easy availability of
6 V) C! L* K1 f* A5 ttestosterone gel and cream, we believe this is proba-/ n6 @6 ^% t9 H( r# Q" D1 E7 }
bly more common than the rare case report in the
8 U- {* A, _* \! V7 ~* cliterature.4: F8 m5 a3 v. `3 E% t/ m6 A
Patient Report
5 [! A8 \* }! r, {+ pA 16-month-old white child was referred to the9 B' R6 P9 w- U G$ A0 @5 |
endocrine clinic by his pediatrician with the concern! M: ~# x; c7 @5 _1 B
of early sexual development. His mother noticed- X/ w" @$ @' S: Y
light colored pubic hair development when he was* r4 x% w6 T+ V. T
From the 1Division of Pediatric Endocrinology, 2University of" R4 C, e: X- E) a
South Alabama Medical Center, Mobile, Alabama.& ^! M5 X x3 Q' W
Address correspondence to: Samar K. Bhowmick, MD, FACE,
3 u1 @, w! d1 B1 T5 @Professor of Pediatrics, University of South Alabama, College of# o: _( u$ i& C& E0 E
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
$ ~4 b- n* f/ J1 |/ @1 re-mail: [email protected].
0 r+ b/ v9 ]8 B2 d1 ^1 i, labout 6 to 7 months old, which progressively became6 B4 ^; N$ T7 u8 H7 M$ R) I
darker. She was also concerned about the enlarge-
5 z' \) l& E1 U4 O; xment of his penis and frequent erections. The child* @6 h4 X" C9 z" d& w
was the product of a full-term normal delivery, with
9 N [- B u- f+ xa birth weight of 7 lb 14 oz, and birth length of
' f _; j+ k8 _, t: d, s6 G" w20 inches. He was breast-fed throughout the first year
# {# w! a: U/ h, U/ {of life and was still receiving breast milk along with
; G( N' Y( \% Z) `. @6 N7 Vsolid food. He had no hospitalizations or surgery,9 V* S0 Y4 T: s; S/ z0 v8 n/ W
and his psychosocial and psychomotor development2 V8 } ?' U# k7 v& n
was age appropriate.
3 }6 t8 H& r4 uThe family history was remarkable for the father,' ^+ H- D& ~1 [! s* u2 r r
who was diagnosed with hypothyroidism at age 16,& B3 {0 @, C, p( {* o
which was treated with thyroxine. The father’s; m" n( W/ J9 @! E8 J" i R# H
height was 6 feet, and he went through a somewhat
# ^6 p% L9 {1 Kearly puberty and had stopped growing by age 14. e% d/ R+ ?! V( ~% o
The father denied taking any other medication. The
. U! V+ W9 q4 l X6 Kchild’s mother was in good health. Her menarche$ f. j Z' z2 Z$ x! i6 A ^6 N
was at 11 years of age, and her height was at 5 feet m: e3 k3 E; ]1 |% y) }# v9 m
5 inches. There was no other family history of pre-
& K/ C# `4 s0 W. b ~cocious sexual development in the first-degree rela-
. F# b1 L4 Z0 Qtives. There were no siblings.
5 G+ e2 n' a8 g9 E8 g( a2 w9 iPhysical Examination1 i, n- T8 u7 C2 h5 |4 q
The physical examination revealed a very active,
7 b' I% N6 K7 w7 h# F yplayful, and healthy boy. The vital signs documented7 t3 u: t; n1 l6 b( O6 e
a blood pressure of 85/50 mm Hg, his length was# O% J- [, Z1 K: Z) a
90 cm (>97th percentile), and his weight was 14.4 kg1 n; N* ^" O9 t9 r. U8 \# V
(also >97th percentile). The observed yearly growth* _! I, s* m; y* k0 K3 H
velocity was 30 cm (12 inches). The examination of( V2 m8 _, U t- C; [; N K
the neck revealed no thyroid enlargement.
7 ?7 s2 h) d HThe genitourinary examination was remarkable for" W* F! v3 T$ ^" M: R% f: Y3 T
enlargement of the penis, with a stretched length of
$ A1 T/ v8 O0 T* p8 cm and a width of 2 cm. The glans penis was very well
& w! z6 y' d2 l" `developed. The pubic hair was Tanner II, mostly around
( c+ o4 s. z/ j" T- V p0 w5 Y5403 I$ B- W0 ^0 G- y7 |
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from+ [0 T4 H4 ?; o0 R
the base of the phallus and was dark and curled. The
; N% \7 m* T0 W$ Atesticular volume was prepubertal at 2 mL each.
4 h8 x0 v. }. qThe skin was moist and smooth and somewhat
9 N/ }5 I& `4 K. L- f# Loily. No axillary hair was noted. There were no
1 q0 ]! I( l- {abnormal skin pigmentations or café-au-lait spots.
2 |1 o' W9 h* X X/ PNeurologic evaluation showed deep tendon reflex 2+/ z: y/ `* b y" _
bilateral and symmetrical. There was no suggestion
' c# v( V+ `- z8 T& \5 G1 r" Gof papilledema.
* m3 Q3 L. D* p3 i9 Z% r( uLaboratory Evaluation7 I' l& m5 c. j' ]3 q/ D& F8 T
The bone age was consistent with 28 months by
j& X9 T3 J, {3 B% I9 w( |using the standard of Greulich and Pyle at a chrono-; F( o) n8 J5 Z) T6 s: c
logic age of 16 months (advanced).5 Chromosomal
0 l+ Z9 h) K& V# gkaryotype was 46XY. The thyroid function test
" R s- s8 F1 A0 I, eshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
; i, W3 e' i, T5 x2 x! r& ]lating hormone level was 1.3 µIU/mL (both normal).
0 L; P) S r9 y) F% rThe concentrations of serum electrolytes, blood5 F4 m( S7 B8 D& t0 V; J0 x. L
urea nitrogen, creatinine, and calcium all were
/ u, x$ A( K% M& j4 `1 ywithin normal range for his age. The concentration
7 b/ j9 T2 P/ ^of serum 17-hydroxyprogesterone was 16 ng/dL
: y# _; Z5 @" H2 z9 [(normal, 3 to 90 ng/dL), androstenedione was 20
7 Q& @+ W% [$ D4 Ong/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
1 D) U* l8 G, r% x) w7 v8 Pterone was 38 ng/dL (normal, 50 to 760 ng/dL),2 F# |1 P8 M& u3 o5 p) J
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
5 P! z/ K4 m0 M! h) @7 d49ng/dL), 11-desoxycortisol (specific compound S)
" Z) I7 ~. A% ?& w" `was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-' m) M0 U+ i1 K: S9 V9 S
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
* ]: E9 A, {: ktestosterone was 60 ng/dL (normal <3 to 10 ng/dL),
3 C( p: Q# f" I* [and β-human chorionic gonadotropin was less than' H* q8 w: @9 o/ K) ~' L. x5 L
5 mIU/mL (normal <5 mIU/mL). Serum follicular& K, h7 R/ y2 S, ]% ~" l6 `/ H# R
stimulating hormone and leuteinizing hormone! s, S" M& I1 B& D4 u L0 t$ w/ d
concentrations were less than 0.05 mIU/mL S' o: f, g7 W, F# \
(prepubertal).
. E+ X2 J$ f8 ?$ f7 j2 q4 e8 aThe parents were notified about the laboratory
1 Z* S5 v6 [/ Bresults and were informed that all of the tests were4 Q. {4 D- O/ i" n' P8 k
normal except the testosterone level was high. The1 S% k' z% f- N3 Z+ G. A% I
follow-up visit was arranged within a few weeks to
0 L" {, W: O- t5 i* |+ A2 wobtain testicular and abdominal sonograms; how-2 X8 s& Y. k; j: }. [
ever, the family did not return for 4 months.! i1 u, u5 L# j& @/ X
Physical examination at this time revealed that the2 t( h0 ~! H0 h3 N5 m- s
child had grown 2.5 cm in 4 months and had gained8 X. R6 E+ Z. D) {! \
2 kg of weight. Physical examination remained; ~4 ?2 e% ?- f1 Q2 s1 I
unchanged. Surprisingly, the pubic hair almost com-
4 p$ o, P% \9 i6 Y: `- ? H* Kpletely disappeared except for a few vellous hairs at( Z7 K2 m3 }1 W; P( R. ?
the base of the phallus. Testicular volume was still 2
* `" g: Z: k8 c, s" hmL, and the size of the penis remained unchanged.
- e3 I+ C" Y5 b( X5 BThe mother also said that the boy was no longer hav-
; K/ l* l0 b' K( I5 Ling frequent erections.% y( k! }& g1 T R
Both parents were again questioned about use of
- Q4 {2 B( t6 Y& E9 H4 Y* Oany ointment/creams that they may have applied to- w% N0 u. y$ _) ~
the child’s skin. This time the father admitted the" P" b1 e7 H; c! S$ ~
Topical Testosterone Exposure / Bhowmick et al 541
) S% K4 j& k' }2 R, A( T. U( t1 ^use of testosterone gel twice daily that he was apply-
( t* z- V3 D8 I2 sing over his own shoulders, chest, and back area for: k i1 }- Q4 r. N' ^+ N
a year. The father also revealed he was embarrassed
, a9 R* B' W/ j" e [* u" b( |to disclose that he was using a testosterone gel pre-, X! W0 q5 U: c5 i/ V- ?% X8 ^8 P" b
scribed by his family physician for decreased libido
: x* _! P; U9 p0 m0 W" h( K$ asecondary to depression.' F0 @: W$ k6 y& x# P/ \! w
The child slept in the same bed with parents.
- Y' v" ?/ y% K& W0 wThe father would hug the baby and hold him on his$ L8 R' ]0 V) C, ]2 T
chest for a considerable period of time, causing sig-8 N+ M8 d% K! v- ]
nificant bare skin contact between baby and father. H) ~" n2 c: `9 |* x
The father also admitted that after the phone call,: |2 B- R: V& u4 f$ F
when he learned the testosterone level in the baby
) f4 b9 O+ e8 Y9 Bwas high, he then read the product information
; J4 ]6 ~! N# \2 N& }. L% Ypacket and concluded that it was most likely the rea-
" V0 ~$ G( C- S r7 Hson for the child’s virilization. At that time, they2 B* l. F& a" A9 U5 u+ N* v
decided to put the baby in a separate bed, and the
8 R: ~- v, {: Ofather was not hugging him with bare skin and had* F. r. S& Q: H% J. k7 [
been using protective clothing. A repeat testosterone
" h7 C0 C) q* T6 k- f Q5 F Mtest was ordered, but the family did not go to the: U& F" ^3 P* S% T. E9 w
laboratory to obtain the test.
3 n. M( _4 m2 F6 u& YDiscussion
4 m& D6 H/ c+ H4 M! m; L8 |0 v' HPrecocious puberty in boys is defined as secondary
$ o+ K* l8 b7 r3 u w5 usexual development before 9 years of age.1,42 ~$ E$ ?/ {/ G) x
Precocious puberty is termed as central (true) when. F" U) x1 t( O) l! ]$ M
it is caused by the premature activation of hypo-- T; p" h1 S% ^ c1 h4 l
thalamic pituitary gonadal axis. CPP is more com-
& C! e+ |0 T4 [& S9 kmon in girls than in boys.1,3 Most boys with CPP, f, d6 W8 j3 d) O0 B
may have a central nervous system lesion that is% y: z* W0 I/ K! o. q8 E: |! H6 j
responsible for the early activation of the hypothal-
% j/ e/ Z9 E# L* z2 Mamic pituitary gonadal axis.1-3 Thus, greater empha-9 _" _3 o; J! E0 K9 O; I# H0 ^
sis has been given to neuroradiologic imaging in
& y. t4 V: \: t/ s, dboys with precocious puberty. In addition to viril-
+ ?9 H) N6 ^; u6 ^ization, the clinical hallmark of CPP is the symmet-
1 v' J0 p3 {5 I+ [( k; ^rical testicular growth secondary to stimulation by. S! F' J: Z; d* E$ W3 @
gonadotropins.1,3
/ D9 o# [8 v" b- DGonadotropin-independent peripheral preco-
/ x. B0 }/ M* A1 ^# wcious puberty in boys also results from inappropriate+ g ^) _( W5 |- }
androgenic stimulation from either endogenous or
; Z6 N$ m: e$ D( J' yexogenous sources, nonpituitary gonadotropin stim-4 A; Z; D! F5 K0 @, J
ulation, and rare activating mutations.3 Virilizing
: E1 F8 X+ U$ N5 V4 o- p% ^/ ncongenital adrenal hyperplasia producing excessive
" v/ q' {+ ]5 o: u; l$ gadrenal androgens is a common cause of precocious" ]1 ^/ K$ X) M* \
puberty in boys.3,4
; F& t! [/ I2 W5 {3 O) MThe most common form of congenital adrenal
" y) k- x6 b" shyperplasia is the 21-hydroxylase enzyme deficiency.
+ e5 g$ ~0 C) z4 \7 _5 ?2 R% iThe 11-β hydroxylase deficiency may also result in3 L0 C V; S* H6 W/ Z
excessive adrenal androgen production, and rarely,
' H% X/ y2 g% u# g+ |: Dan adrenal tumor may also cause adrenal androgen
! Z: @- e9 ~8 J# Q5 U, _8 I+ G+ D: @excess.1,3
% b% s" J( m$ i2 T. ~- B$ vat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
- d3 ]8 a4 m5 o) m. n C542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
! i2 P9 b9 x3 k9 GA unique entity of male-limited gonadotropin-1 g* s) t+ Y9 o9 a% p! v2 s
independent precocious puberty, which is also known
" {7 ?: ]) u3 ras testotoxicosis, may cause precocious puberty at a
3 W' t3 `, O0 Nvery young age. The physical findings in these boys
2 i: T# i y6 R& twith this disorder are full pubertal development,$ [" s7 u! F' N$ h4 h
including bilateral testicular growth, similar to boys
0 j. E% q! B, \0 v9 Gwith CPP. The gonadotropin levels in this disorder% T d" x5 b' P
are suppressed to prepubertal levels and do not show
8 M. p/ u& h' n, `pubertal response of gonadotropin after gonadotropin-
6 B9 @. y3 `; P& n6 X8 p, j8 Xreleasing hormone stimulation. This is a sex-linked
7 ~! F6 W5 a/ _! u. }7 @. Xautosomal dominant disorder that affects only
" g1 E5 W, [8 E+ M( C/ Jmales; therefore, other male members of the family9 b2 E7 l4 }$ l; q9 v
may have similar precocious puberty.3
. p' |6 y( G3 M( ^5 sIn our patient, physical examination was incon-$ M! \: ~# n6 \
sistent with true precocious puberty since his testi-
# q, B6 k6 V; D- Ccles were prepubertal in size. However, testotoxicosis+ @4 o; u8 C8 n. e! V
was in the differential diagnosis because his father- K+ Q+ o5 L' `7 i
started puberty somewhat early, and occasionally,
. s$ F, Q; ~2 [' X: H0 Etesticular enlargement is not that evident in the
3 z, Q, \' y" g5 [beginning of this process.1 In the absence of a neg-
4 m3 z% J1 ~9 n) y% h/ Oative initial history of androgen exposure, our1 A2 k$ K; U I% j4 N5 M4 ?& w
biggest concern was virilizing adrenal hyperplasia,
3 O4 d4 `: I4 g/ zeither 21-hydroxylase deficiency or 11-β hydroxylase, J! U/ V6 L6 Q# V9 ?3 S
deficiency. Those diagnoses were excluded by find-9 {. c3 A' `$ X) r* r4 F
ing the normal level of adrenal steroids.! |# u0 v1 `* }: B" Q
The diagnosis of exogenous androgens was strongly
8 Y9 f. b( v, V" c8 esuspected in a follow-up visit after 4 months because
: {; r5 z* N, c6 f1 mthe physical examination revealed the complete disap-* }8 L/ r4 C' ^/ }( ]
pearance of pubic hair, normal growth velocity, and
`: ~7 H6 D$ _; g. n1 gdecreased erections. The father admitted using a testos-
A; S7 o9 `7 w$ b5 j6 [+ cterone gel, which he concealed at first visit. He was! s) R1 C2 F. a0 r+ z0 r3 y1 l
using it rather frequently, twice a day. The Physicians’( i2 T N3 ?1 \5 v* g
Desk Reference, or package insert of this product, gel or- l$ b# R3 K2 }9 L* `
cream, cautions about dermal testosterone transfer to, G; c/ y2 Q, B$ z; v
unprotected females through direct skin exposure.& m. H6 P1 Y7 c6 |- w
Serum testosterone level was found to be 2 times the
' m# [5 y" Y. [* Z' {baseline value in those females who were exposed to2 U! V, f) q$ L) W( r. {: [
even 15 minutes of direct skin contact with their male3 X+ Q; o" Q" T! G9 T! Y4 u
partners.6 However, when a shirt covered the applica-
; z* x; ^' y$ @, Rtion site, this testosterone transfer was prevented./ N, J/ r2 u; x0 S7 ]% ?; s$ u
Our patient’s testosterone level was 60 ng/mL,
+ Z. d' b9 {9 s4 K$ R7 _' y$ c% p' [which was clearly high. Some studies suggest that
5 H9 C6 q/ l" {8 Tdermal conversion of testosterone to dihydrotestos-
) r! \! E, a0 n( ]4 hterone, which is a more potent metabolite, is more& j9 F7 i& Q L0 z. v/ F8 T
active in young children exposed to testosterone! ?" i) y4 k) |( l0 Y' [
exogenously7; however, we did not measure a dihy-$ A/ a' @0 c" C& P
drotestosterone level in our patient. In addition to
; ?% S9 N- n9 h6 Yvirilization, exposure to exogenous testosterone in9 @, b# v7 L0 Z% E9 s- H$ y1 k
children results in an increase in growth velocity and
- K: W" N- c% W: ^+ i* Q' ]advanced bone age, as seen in our patient.
1 Z+ {/ B3 M) |, W: p4 W9 _The long-term effect of androgen exposure during# U+ X- g+ b: S& O5 N. _
early childhood on pubertal development and final+ K! s8 }9 r0 ?# `3 K/ s
adult height are not fully known and always remain$ V, b) O/ c& D- k' |+ _2 R$ ~/ U
a concern. Children treated with short-term testos-7 z" X; ^/ D- }" R) `1 q
terone injection or topical androgen may exhibit some6 Y# I1 {: Q8 h, t) g
acceleration of the skeletal maturation; however, after! {8 O1 \* }& p( E0 s
cessation of treatment, the rate of bone maturation0 I. ^( o7 u- M! B3 _7 }" N
decelerates and gradually returns to normal.8,9( Y" r4 K+ x; W6 F! g4 _
There are conflicting reports and controversy
- B1 g& f) N4 m+ i: mover the effect of early androgen exposure on adult
( u0 ?2 d- Z" s4 P$ v7 U8 O. B8 E( i" Zpenile length.10,11 Some reports suggest subnormal
6 o q/ T3 V1 @2 U8 Aadult penile length, apparently because of downreg-
) g* e! N+ z. W: ^ulation of androgen receptor number.10,12 However,
& S8 `( R; T3 r& `' pSutherland et al13 did not find a correlation between
3 B% Y2 M/ ^) J' I. H* G/ Pchildhood testosterone exposure and reduced adult% j$ r6 b" x2 K$ V! Z
penile length in clinical studies.
1 k3 B8 g$ }4 B& R7 [0 Z7 tNonetheless, we do not believe our patient is
3 }* e1 R/ Q$ `0 `! U" F8 Z6 Zgoing to experience any of the untoward effects from+ S( E% N$ L- w6 P9 d8 ~5 R
testosterone exposure as mentioned earlier because
( i7 ]# r* U; t6 g; n0 r( Pthe exposure was not for a prolonged period of time.
. V1 e! M+ q0 v- M }Although the bone age was advanced at the time of% Q6 B$ K; s# x Y5 V2 _' z9 ~
diagnosis, the child had a normal growth velocity at
7 g# w# i! Q0 V3 ^% E4 d6 V1 t' Sthe follow-up visit. It is hoped that his final adult
( C% g; m$ O6 a2 z+ v; Z0 K9 P0 lheight will not be affected.) S( @5 o1 G8 s0 y) c% L+ h0 |1 r
Although rarely reported, the widespread avail-
) {1 m/ O7 K! X3 J& Vability of androgen products in our society may; q. r8 H/ Y, {; G; _( k( c
indeed cause more virilization in male or female
1 l5 S, d4 W, t/ Z& i% j6 j# @children than one would realize. Exposure to andro-# }: G! `% u% w" x
gen products must be considered and specific ques-/ L9 m+ @0 r4 w7 @; w
tioning about the use of a testosterone product or
, x; F: p9 F, x6 Ugel should be asked of the family members during: i- b8 c2 ]$ h1 Y2 T* w; k, U
the evaluation of any children who present with vir-1 A* b, t: e: X3 \9 V% D
ilization or peripheral precocious puberty. The diag-3 A, I4 M4 N0 i! l! n1 J
nosis can be established by just a few tests and by
4 `9 G" Y8 d( Wappropriate history. The inability to obtain such a7 b0 i2 V6 ] f `$ v) i
history, or failure to ask the specific questions, may9 w( l( h* K+ V; D$ b% q
result in extensive, unnecessary, and expensive" Q9 T1 K5 l" D' T& _+ g( Y
investigation. The primary care physician should be' `( z9 U0 L, W$ j4 j
aware of this fact, because most of these children
; Y( z2 z( O) v) x9 }0 Xmay initially present in their practice. The Physicians’
3 x" D$ Z |' J, n* Q3 cDesk Reference and package insert should also put a. J) V! U+ X6 l2 |
warning about the virilizing effect on a male or4 y, M" z K! I2 Y X2 z3 S, Z7 P
female child who might come in contact with some-
/ K9 M* k: j" N. C# n6 P, yone using any of these products.8 r0 @3 r' I6 d5 v
References
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0 P- z( E; e" gand puberty in the male. In: Sperling MA, ed. Pediatric, }* G; P) ]) O, s8 h. m8 K
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;4 x4 G; f; D7 x4 A& N4 Z- N2 K
2002: 565-628.0 _; {1 H, w9 M( C$ v" }, E
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
7 Z5 X/ ^% ]' e2 `2 Cpuberty in children with tumours of the suprasellar pineal" K0 B7 U$ U* o. K
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% z. o/ s( d; q. R0 t8 Hareas: organic central precocious puberty. Acta Paediatr.7 ?0 |$ p z- k7 D& D+ l
2001;90:751-756.. F7 z# ~. `: T& T
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
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exposure to testosterone. Pediatrics. 1999;104:e23.
5 I1 i6 U/ i5 T3 P0 n0 k5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
; D+ x; F, O7 M3 E) R8 b+ RSkeletal Development of the Hand and Wrist. 2nd ed.
& d! G$ Y7 Y, g# D$ ^; {7 {Stanford, CA: Stanford University Press; 1959.' F! \# E8 x' ^
6. Physicians’ Desk Reference. Androgel 1% testosterone,
6 Q8 m1 S, m. ]8 Y2 t1 ]# ?Unimed Pharmaceutical Inc. Montvale, NJ: Medical) n9 F2 Z( E" I3 P) o' _ d& k& [
Economics Company, Inc; 2004:3239-3241.( R# ^) m1 b' E# x6 q. j M
7. Klugo RC, Cerny JC. Response of micropenis to topical9 Q$ Q6 ?* G! Q) f& Q7 c' n
testosterone and gonadotropin. J Urol. 1978;119:
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