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is a significant concern for physicians. Central) D/ o. |( e& M
precocious puberty (CPP), which is mediated7 S4 F' S; Q: s) ?4 n
through the hypothalamic pituitary gonadal axis, has
" M- K# [1 B; x8 u! ]9 j6 _a higher incidence of organic central nervous system7 K' ~4 u, ~+ Y$ `
lesions in boys.1,2 Virilization in boys, as manifested, g. r- r( ~6 w8 |8 q3 u
by enlargement of the penis, development of pubic; Y# ?; K, Z. A* q& ]+ b
hair, and facial acne without enlargement of testi-) X5 C; q# |3 E* v7 v
cles, suggests peripheral or pseudopuberty.1-3 We3 w1 o. R: F3 m! Q0 t
report a 16-month-old boy who presented with the
" l* P4 X" E9 G4 Z5 Venlargement of the phallus and pubic hair develop-) x; C6 e0 t% V7 H, P/ y/ D* ^& B) _
ment without testicular enlargement, which was due
. g, f5 ~- c) o2 |3 eto the unintentional exposure to androgen gel used by
# ?1 w' B9 s( V6 v. a9 Z: y& i0 ethe father. The family initially concealed this infor-
( ~$ s* X3 ~5 }1 S f5 g+ fmation, resulting in an extensive work-up for this
) H; I: G& p+ X: S h% w: Tchild. Given the widespread and easy availability of
4 @# |$ l' A# W7 M4 ttestosterone gel and cream, we believe this is proba-+ f; {$ g9 ~* ?& W/ o% \! W7 ~
bly more common than the rare case report in the# l5 P' @5 q3 \/ I% x
literature.4. u9 a* {* `- @! L: ~/ M1 p
Patient Report5 _* c+ K# O4 s* P, ?
A 16-month-old white child was referred to the
, f% e0 H3 n4 V, [' K" yendocrine clinic by his pediatrician with the concern4 r5 _9 ?8 Z1 k
of early sexual development. His mother noticed/ x8 ]7 G5 x# P/ v7 U
light colored pubic hair development when he was
/ W9 U+ R9 X* I' xFrom the 1Division of Pediatric Endocrinology, 2University of) x# e9 a1 S* C# e6 b- H8 S
South Alabama Medical Center, Mobile, Alabama.* F4 W) }' ~1 U. n! M
Address correspondence to: Samar K. Bhowmick, MD, FACE,
9 O- x' t8 a, r1 h% pProfessor of Pediatrics, University of South Alabama, College of9 L' b4 |6 v2 }# `7 _& r; j1 R
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
& N4 ^$ q! X N8 }e-mail: [email protected].
: s9 I7 l$ y, C; ?- H% j% Yabout 6 to 7 months old, which progressively became$ U. ~) B5 }( w4 \7 C+ q
darker. She was also concerned about the enlarge-
9 a$ x/ N, J: b- B* ]ment of his penis and frequent erections. The child3 x+ }9 E! Z2 g- H9 l
was the product of a full-term normal delivery, with
9 [* A! k% r) d& j- @a birth weight of 7 lb 14 oz, and birth length of( K7 s3 ]3 s( Q ~& v
20 inches. He was breast-fed throughout the first year3 x4 k2 z, U) b; a# h/ ~4 \
of life and was still receiving breast milk along with
7 u$ K W( s& S' Qsolid food. He had no hospitalizations or surgery,
' q/ @" ]6 e2 x/ J7 J2 `and his psychosocial and psychomotor development. p/ g9 r% c9 @
was age appropriate.
! o4 V6 ~, C8 [" I6 ^The family history was remarkable for the father,
% y5 ?( _. H. }/ x! P I4 U& Awho was diagnosed with hypothyroidism at age 16,
! Z) x1 k- T& fwhich was treated with thyroxine. The father’s( e* b. t! L( d3 u/ @9 f$ J2 j
height was 6 feet, and he went through a somewhat) k. Z4 ^1 J* ]' l
early puberty and had stopped growing by age 14.
" d- g+ J* m' H) f& S. R6 @* kThe father denied taking any other medication. The! |9 Q! D) }$ _+ G/ ]
child’s mother was in good health. Her menarche0 \6 k. [% n0 B' c& t' e: ^+ N- D# X
was at 11 years of age, and her height was at 5 feet9 Y4 O( G& U6 M( O$ ^
5 inches. There was no other family history of pre-
h' U" {1 ?: F. [8 scocious sexual development in the first-degree rela-. ~: }' D; D) H1 u) n; m% L2 T$ C
tives. There were no siblings.
/ E6 E$ `# o8 K$ Z v- t% a0 R3 IPhysical Examination
1 i0 p9 G5 N4 P* \! _7 @1 ^The physical examination revealed a very active,8 W7 A* O/ y* b, C
playful, and healthy boy. The vital signs documented
, l# r6 O1 Z( v& Z* k' z9 N6 R# S( la blood pressure of 85/50 mm Hg, his length was7 d0 J, N- S! h/ W# L/ r' N) N
90 cm (>97th percentile), and his weight was 14.4 kg$ s9 q) n/ ]( N* o- f
(also >97th percentile). The observed yearly growth9 c) p0 m: C1 A
velocity was 30 cm (12 inches). The examination of
' b2 R7 j8 {7 K6 dthe neck revealed no thyroid enlargement.% w" s \8 t0 `) N$ _$ O3 x
The genitourinary examination was remarkable for' G# W% \9 k) R! [. ?* C
enlargement of the penis, with a stretched length of
' f$ @% g% A" T" f2 c8 cm and a width of 2 cm. The glans penis was very well& K% n1 a/ e( w, k+ a) K
developed. The pubic hair was Tanner II, mostly around2 V ?2 C |7 S8 Y; D' k, c
540
" F& F) z. h# P# c8 Z2 O/ Yat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
' O! R& D& W. Z9 \& J7 Wthe base of the phallus and was dark and curled. The
3 M( \% E# d4 ztesticular volume was prepubertal at 2 mL each.% b; D- Q& G. u8 u! H
The skin was moist and smooth and somewhat, A; \+ F& B# h! Y6 p' [6 j
oily. No axillary hair was noted. There were no
8 e$ d. k0 { c' {- fabnormal skin pigmentations or café-au-lait spots.- {9 m8 Q4 j$ T. _5 a6 g
Neurologic evaluation showed deep tendon reflex 2+/ ?3 n% i% X% f- C. X
bilateral and symmetrical. There was no suggestion
3 V4 w0 T6 ^8 O9 z" R. vof papilledema., r( I! J# J) o, E+ P! x6 m& ~
Laboratory Evaluation
! J W9 H) \: g8 }# G! `, iThe bone age was consistent with 28 months by$ P o' A/ y( S% p! }0 P
using the standard of Greulich and Pyle at a chrono-
" _- N# s+ m$ dlogic age of 16 months (advanced).5 Chromosomal
% m) X0 O, S3 g2 v& ^karyotype was 46XY. The thyroid function test4 N! U3 F2 D4 z/ ~: l
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
2 L; d6 x$ \0 a. P: Zlating hormone level was 1.3 µIU/mL (both normal).
/ p/ Q/ n8 ]) b GThe concentrations of serum electrolytes, blood8 z- b( ^7 T6 b0 T1 W$ N
urea nitrogen, creatinine, and calcium all were# M3 O( m9 Y; H7 F, r
within normal range for his age. The concentration
7 ^: T# h! Q6 M# kof serum 17-hydroxyprogesterone was 16 ng/dL
, H- C; A8 t/ L# t( h8 q(normal, 3 to 90 ng/dL), androstenedione was 20
$ b/ U& Z, Z4 W- `, t" E+ j5 Hng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-5 c% L' S+ v5 w+ ~( ?' k3 R+ C
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
) P( H3 A& j: [, ^desoxycorticosterone was 4.3 ng/dL (normal, 7 to5 c) I( M( Q9 V, w. @, B8 S
49ng/dL), 11-desoxycortisol (specific compound S)
; G$ S5 d5 r* U2 w6 V4 zwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-: O$ ?, r+ G+ Y3 _' Y
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
, G5 V8 B/ ?# c5 f8 Vtestosterone was 60 ng/dL (normal <3 to 10 ng/dL),) m. z6 }% X7 \3 j" Q' P8 n
and β-human chorionic gonadotropin was less than
) k3 E1 j/ i2 ~3 g$ }7 m: v5 mIU/mL (normal <5 mIU/mL). Serum follicular
) L7 j; o+ F! X9 K( vstimulating hormone and leuteinizing hormone" E, {: l0 ~9 D' y
concentrations were less than 0.05 mIU/mL9 R+ ~ s9 |' _ K% D3 o
(prepubertal).) U w. v, r/ y$ Z* }; l" r
The parents were notified about the laboratory& n+ G8 g4 U% F, M. T& s
results and were informed that all of the tests were H( U+ A: G, V' X+ f% ~2 j
normal except the testosterone level was high. The
2 l" S; ^$ P9 H; `) S4 Ofollow-up visit was arranged within a few weeks to
: m+ Q- S! P' I- A( Zobtain testicular and abdominal sonograms; how-
* u+ }7 n" E u0 O9 n1 sever, the family did not return for 4 months.9 p( s2 S& H. v6 C; a2 m
Physical examination at this time revealed that the. c+ \' g, o. l& Q
child had grown 2.5 cm in 4 months and had gained
( @$ E- N" u6 c2 O6 s) R6 O9 ^ Y2 kg of weight. Physical examination remained% u/ E3 {3 a( k3 Z; ]
unchanged. Surprisingly, the pubic hair almost com-( j5 ]; |' K) K: M
pletely disappeared except for a few vellous hairs at9 O: M6 f1 D! @+ T( V# M7 g
the base of the phallus. Testicular volume was still 23 T) N+ L4 ]: K* A! _( n% k
mL, and the size of the penis remained unchanged.
4 W$ h4 ]# d9 C5 P: _2 OThe mother also said that the boy was no longer hav-! y: m# K) e8 o
ing frequent erections.! f9 E' Y( @: r6 o7 ]; `
Both parents were again questioned about use of
3 L4 w, P6 a. G3 L- wany ointment/creams that they may have applied to
; R; A1 P `. a" c7 Zthe child’s skin. This time the father admitted the
% E. M" f9 `, O w+ M' v4 z! WTopical Testosterone Exposure / Bhowmick et al 5419 T, l% W1 _5 s1 r5 ~$ m
use of testosterone gel twice daily that he was apply-
7 D2 M! R4 b: F* Oing over his own shoulders, chest, and back area for
1 ~+ g* |# u! J7 La year. The father also revealed he was embarrassed m" W& P0 ~" p/ g6 G
to disclose that he was using a testosterone gel pre-5 i6 d( i6 |6 M
scribed by his family physician for decreased libido
- H8 {0 d9 u( o% x. i% usecondary to depression.+ K2 d" y* ?+ F U
The child slept in the same bed with parents.
9 k; s( y; ^6 ~6 W* e A/ D: hThe father would hug the baby and hold him on his
, h" A X, Q# B+ O4 j! xchest for a considerable period of time, causing sig-, b2 ]5 D0 I8 y9 `+ x6 |4 p
nificant bare skin contact between baby and father.3 U, ?0 ^2 }0 E# |
The father also admitted that after the phone call,' O& q$ p: }! m& x; P$ [ f# I0 x
when he learned the testosterone level in the baby
8 r1 Z( w. [9 b3 L" c% awas high, he then read the product information
0 b9 W( _5 }6 L Ypacket and concluded that it was most likely the rea-6 M- {( B$ a; l; S% I+ z
son for the child’s virilization. At that time, they
: P9 m* o& p( I1 c! @decided to put the baby in a separate bed, and the
$ ~" r* z3 t% D& h5 Rfather was not hugging him with bare skin and had
, k4 U8 J% s m1 b) vbeen using protective clothing. A repeat testosterone; L, W9 `: k. j1 u
test was ordered, but the family did not go to the
8 n3 @/ M- k/ T) g; M# t: Ylaboratory to obtain the test.
% L- b0 n* M7 {Discussion
" i/ N& v/ u: @4 O$ \7 `Precocious puberty in boys is defined as secondary
+ Y2 B* A, q- s; b" `; I0 m: Tsexual development before 9 years of age.1,4- ~0 _& f# I: H1 Y
Precocious puberty is termed as central (true) when3 ?4 I" ?, n" Q0 O5 h
it is caused by the premature activation of hypo-
! |4 E# u6 R5 f; sthalamic pituitary gonadal axis. CPP is more com-/ K9 u8 @) v/ S8 [6 C* P( Q) S
mon in girls than in boys.1,3 Most boys with CPP
1 b+ v9 `) x( h/ X* ?, amay have a central nervous system lesion that is! O0 U6 V- D' M# H; C1 ~. W
responsible for the early activation of the hypothal-
6 f1 `4 @% t6 E2 ^. C7 W* A& Y5 [2 eamic pituitary gonadal axis.1-3 Thus, greater empha-
3 G. |# C: z" K7 e+ i3 E( K J* {sis has been given to neuroradiologic imaging in
' P& o" H( X- d5 g* w3 W* [5 Eboys with precocious puberty. In addition to viril-
& J$ I+ H" Q# Y5 g5 S: s4 Kization, the clinical hallmark of CPP is the symmet-/ C0 y/ B$ |& ?2 c5 x" G
rical testicular growth secondary to stimulation by
. M3 H, D) i- l. h+ n& agonadotropins.1,3' ^) }9 k6 H! M
Gonadotropin-independent peripheral preco-
9 @7 c* k4 K$ F7 o" ycious puberty in boys also results from inappropriate/ B" U+ C( ~* [! |# i' R* W4 T
androgenic stimulation from either endogenous or
! S7 I5 f9 ~1 q/ F. Oexogenous sources, nonpituitary gonadotropin stim-- v! C% P) J+ ~- [5 }- `. K+ G$ Z
ulation, and rare activating mutations.3 Virilizing9 ~& E& T/ n- Y( s# g" g* C
congenital adrenal hyperplasia producing excessive
, d; j' E `* ]# y. F, \adrenal androgens is a common cause of precocious) c" g# A7 x$ D, ^( `) _& g
puberty in boys.3,4
* }$ Z+ h7 b( s& J AThe most common form of congenital adrenal
$ L5 x" n* G0 Fhyperplasia is the 21-hydroxylase enzyme deficiency.2 [+ ~( n- } w3 f! Z- P' |
The 11-β hydroxylase deficiency may also result in, b/ o4 h! b& i4 b2 M1 I+ ~# ^
excessive adrenal androgen production, and rarely,
1 @/ u! k1 o8 k( W6 `/ Y) [& g+ Ean adrenal tumor may also cause adrenal androgen1 G$ k$ Q' V. I ^2 W
excess.1,3- e$ J% S- c9 b( Y8 Y
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
0 L4 C( P1 c! K5 h+ t( w! B* h( L542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
8 g r3 K7 o6 W# i. H7 J# RA unique entity of male-limited gonadotropin-+ Z. T6 Z0 V2 n) q8 M) d+ y6 _
independent precocious puberty, which is also known+ t1 f- \3 Q$ B: u) {' H" q$ r4 i
as testotoxicosis, may cause precocious puberty at a0 h) t0 E. y; u; E3 j0 s
very young age. The physical findings in these boys& H' ]" D- a4 L9 ]
with this disorder are full pubertal development,& h* H6 t5 g& P9 g$ I9 S `" ^' [
including bilateral testicular growth, similar to boys) |7 s4 h2 h u% @) C6 [
with CPP. The gonadotropin levels in this disorder
& ?/ x1 N( L; R, l. ]: q; f; Mare suppressed to prepubertal levels and do not show
+ `& @: R% O+ P; j8 ypubertal response of gonadotropin after gonadotropin-
" q( C3 k* A! D* m3 d3 \releasing hormone stimulation. This is a sex-linked
# J5 G5 j' ~; c' F0 s- Y6 R Tautosomal dominant disorder that affects only
/ d# \& S) q4 ], I; Fmales; therefore, other male members of the family
% O. |5 B5 g5 A/ smay have similar precocious puberty.3
4 r& s4 y- K" b3 fIn our patient, physical examination was incon-
& ] ~0 ~- H5 E/ _sistent with true precocious puberty since his testi-8 U4 T O, F4 Z; q1 G
cles were prepubertal in size. However, testotoxicosis# C, Y- S5 i1 E& \8 R) k4 z
was in the differential diagnosis because his father
7 X& d" z& W4 Qstarted puberty somewhat early, and occasionally,: x- U% g! H& i2 }( e \4 [1 ^* R
testicular enlargement is not that evident in the
) z+ T* n5 j/ x. q+ k/ `beginning of this process.1 In the absence of a neg-3 Z& h+ L6 G8 n+ Z3 s/ T0 J( k! I0 _
ative initial history of androgen exposure, our
. K& ]' M7 j5 ]$ ^) X% _0 _biggest concern was virilizing adrenal hyperplasia,- M: H/ U1 [( T- ]
either 21-hydroxylase deficiency or 11-β hydroxylase
# n- s! h) K3 V. ydeficiency. Those diagnoses were excluded by find-1 t7 _5 z$ U8 h' L/ f. ?
ing the normal level of adrenal steroids.7 \1 J6 B7 } e& A* g
The diagnosis of exogenous androgens was strongly
' ^# j7 H. G, @. D1 b) ~0 S' o" rsuspected in a follow-up visit after 4 months because, i7 _3 x( _( i& Q4 o; F
the physical examination revealed the complete disap-
" C) v2 t- @" B) b A. [pearance of pubic hair, normal growth velocity, and- V& V7 u" c* z, Q" j; @( G# K* w
decreased erections. The father admitted using a testos-4 j' u% n5 T5 R2 N6 I) h
terone gel, which he concealed at first visit. He was
# @$ P6 s3 V1 ^) \) v: eusing it rather frequently, twice a day. The Physicians’
) G- `+ I* G8 @. E# s. N: T$ b* lDesk Reference, or package insert of this product, gel or
, g% y4 i9 g/ D% f4 h. Jcream, cautions about dermal testosterone transfer to
3 @/ k6 ~/ \! T0 v* T& J2 }unprotected females through direct skin exposure.9 U, C: d9 R) N) G5 l
Serum testosterone level was found to be 2 times the2 u! P. e) E7 l# U$ ^2 O
baseline value in those females who were exposed to
H( I6 y3 W( A; A& V' heven 15 minutes of direct skin contact with their male
* T' i" h% a8 [0 z+ r4 Kpartners.6 However, when a shirt covered the applica-$ [4 ^8 n2 y; W+ K
tion site, this testosterone transfer was prevented.% F6 g8 D- K7 Z( c
Our patient’s testosterone level was 60 ng/mL,% k( Y7 N; X. z* r3 h$ \4 L
which was clearly high. Some studies suggest that
, C! X/ G" \+ ~2 @: p+ Zdermal conversion of testosterone to dihydrotestos-9 u3 _, a5 n" e$ i2 e9 |8 u) }
terone, which is a more potent metabolite, is more7 ~/ v& S' j- W* Y
active in young children exposed to testosterone. q& |/ s7 t% G5 |1 x
exogenously7; however, we did not measure a dihy-
$ J2 l1 Z4 B' P( }( Odrotestosterone level in our patient. In addition to
) c! |2 w* W7 o0 m1 \virilization, exposure to exogenous testosterone in7 f/ I* W, `! ?2 [; o" |8 i1 f
children results in an increase in growth velocity and
% r W6 C' e( V4 Y8 Dadvanced bone age, as seen in our patient.2 ]" G9 w3 u8 n6 ?2 d) E7 T
The long-term effect of androgen exposure during
5 M- U- E4 p8 r6 X' E. Iearly childhood on pubertal development and final0 X! _2 D, x7 \( f) x
adult height are not fully known and always remain" G9 J& I3 d3 ^
a concern. Children treated with short-term testos-. d) j8 ]- F$ X6 E- z2 D$ \/ v
terone injection or topical androgen may exhibit some/ P0 F% F4 z1 [2 B7 M
acceleration of the skeletal maturation; however, after
& h" K7 }2 _1 W- P! k% d7 fcessation of treatment, the rate of bone maturation
4 ?% C! ~4 o' ~9 s( I" {decelerates and gradually returns to normal.8,9& s& p6 ~: a, Z0 W) J# Z/ m! B
There are conflicting reports and controversy* a H, I1 y3 {& r. p. m
over the effect of early androgen exposure on adult
4 @% d4 d# l2 openile length.10,11 Some reports suggest subnormal; D/ K8 l( O8 \
adult penile length, apparently because of downreg-2 x5 Z7 j1 ^) t1 p, O& ?. k/ b
ulation of androgen receptor number.10,12 However,1 n- p) D9 F8 W9 D- Q- F6 m& R$ h
Sutherland et al13 did not find a correlation between
2 f" C) r* l" {5 ~childhood testosterone exposure and reduced adult
2 X9 v( |5 {2 M F$ g/ Xpenile length in clinical studies.
3 ~" K, `0 J/ c1 cNonetheless, we do not believe our patient is
9 Z4 H' g6 k& j- B/ M1 xgoing to experience any of the untoward effects from) E( I# ]+ q8 n. f$ _$ N
testosterone exposure as mentioned earlier because
: ^0 P0 o) N; `5 i, Tthe exposure was not for a prolonged period of time., ?/ _: C: G3 C& n
Although the bone age was advanced at the time of
) T: p3 Q9 [2 A: f7 ]: X! H* Hdiagnosis, the child had a normal growth velocity at
! G L1 p. U. U6 _2 Cthe follow-up visit. It is hoped that his final adult) D7 s- s6 m& A( u; b
height will not be affected.
# G' s F8 Q2 b5 A& S3 ~Although rarely reported, the widespread avail-
7 u9 L, J3 M& J( I7 m/ ~" y1 @ability of androgen products in our society may2 F/ g$ y0 A2 k( Q
indeed cause more virilization in male or female
4 N$ E2 a& p- b7 u& t2 e! m- F9 t: ^children than one would realize. Exposure to andro-! u' \$ z! d! v2 u) d, o
gen products must be considered and specific ques-6 U7 S. l9 y; m7 z2 l4 _ Q
tioning about the use of a testosterone product or
- v* L0 A) \2 l# R: Cgel should be asked of the family members during
) _; O3 v* V9 M! I" ?the evaluation of any children who present with vir-
. m4 Y# J. b" Eilization or peripheral precocious puberty. The diag-0 q7 R% l# `+ L- A0 K7 k4 h4 X
nosis can be established by just a few tests and by
4 _+ O! O4 \9 Y8 T# happropriate history. The inability to obtain such a
+ ]- _2 P# d) K( R/ \history, or failure to ask the specific questions, may! G: R( J9 C% D! ]4 ?8 c# O6 ]
result in extensive, unnecessary, and expensive
( K- {4 v2 r1 s" Xinvestigation. The primary care physician should be
7 ]6 @8 f* w9 e7 g, u( oaware of this fact, because most of these children/ \" v# H, v' U! H* y" O
may initially present in their practice. The Physicians’
) o5 o1 M! p2 M; E) k, m1 ADesk Reference and package insert should also put a: \% @# P/ {& o9 X0 W; |
warning about the virilizing effect on a male or
1 a, w* ?# A2 a8 f1 b0 ?female child who might come in contact with some-
8 L, D7 n" x$ U! k: j* Q, M, Yone using any of these products.. _4 u( H6 i, ^# r
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2002: 565-628.1 k5 C2 J. ^/ ]1 o @: k7 w" W7 b
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puberty in children with tumours of the suprasellar pineal& b' ^( c& R" [% u
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! X7 }; I) w- @, R6 u* X3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
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4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
8 [9 b5 G2 b; M. L' E/ L: }5 Ndevelopment in a two-year-old boy induced by topical
6 F6 [ q& |$ P+ W" j B6 `; @exposure to testosterone. Pediatrics. 1999;104:e23., K9 T9 [, c$ ~0 G5 F
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
5 e( \5 N3 [# J+ w+ ISkeletal Development of the Hand and Wrist. 2nd ed.: y9 D0 @3 [/ Z4 N4 q# ]& f' x
Stanford, CA: Stanford University Press; 1959.
) V& ]% r9 X7 F! V& @6. Physicians’ Desk Reference. Androgel 1% testosterone,; w* R# O0 z6 ~
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
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