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is a significant concern for physicians. Central* u; i5 b }9 }+ l) k4 M0 l2 V
precocious puberty (CPP), which is mediated) j+ k+ a2 `% U, _, x0 f0 W
through the hypothalamic pituitary gonadal axis, has9 W( p1 v, x) C& _3 l9 X
a higher incidence of organic central nervous system
! a; A0 [7 J1 K$ x+ s$ I& llesions in boys.1,2 Virilization in boys, as manifested) [# ~; t. C1 {* [
by enlargement of the penis, development of pubic
$ ?# O2 }/ {9 I; f5 Mhair, and facial acne without enlargement of testi-
% Y' A1 x3 U* W8 B- @- |cles, suggests peripheral or pseudopuberty.1-3 We" N$ G0 ^0 p% D& `% ^# u
report a 16-month-old boy who presented with the
( C" ?/ x8 w, Q% A1 Kenlargement of the phallus and pubic hair develop-3 z: i5 Y ~2 T6 V0 K0 g! g
ment without testicular enlargement, which was due
& e- X }5 ~. l& T2 E w# ^. {to the unintentional exposure to androgen gel used by
& u' r: I z) s, q" Hthe father. The family initially concealed this infor-0 a. K8 h3 B7 ?' i! p
mation, resulting in an extensive work-up for this: [; ^3 V& I. f9 J& s
child. Given the widespread and easy availability of
7 [6 s; _" U& D% ~4 k( ltestosterone gel and cream, we believe this is proba-% ~6 r- z' V5 d0 T" I# Y, D3 R
bly more common than the rare case report in the/ b- k$ z8 [- y( C" g
literature.4* D/ o7 c# t2 A/ Y Y, X
Patient Report
4 R3 R8 f& X; G5 _9 _A 16-month-old white child was referred to the* p( |: ?4 C! q: b- J
endocrine clinic by his pediatrician with the concern0 G6 L) E J9 ` `. M7 X
of early sexual development. His mother noticed
9 [0 ^% i9 L7 e( u/ G5 [- Q0 ]* flight colored pubic hair development when he was
2 q/ U( {0 e. ~From the 1Division of Pediatric Endocrinology, 2University of/ m+ q& \2 G5 L2 w- H! Q2 o: x
South Alabama Medical Center, Mobile, Alabama., @ Z! q. B& d) W+ M- A, t
Address correspondence to: Samar K. Bhowmick, MD, FACE,
6 ?9 Q! o2 u8 Z+ C" e0 @) [Professor of Pediatrics, University of South Alabama, College of
+ Z5 z( {9 f8 ^0 WMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
7 P% K8 _ D9 C3 R0 I. e; w7 Ze-mail: [email protected].
5 E5 \; x* Q8 @about 6 to 7 months old, which progressively became S( i( H: K/ g8 A! ?: e
darker. She was also concerned about the enlarge-
1 i4 n1 M! t3 T# F( r2 nment of his penis and frequent erections. The child' I/ `& x+ v. h& ^% z- l
was the product of a full-term normal delivery, with
( e1 ?8 G/ E) Z, La birth weight of 7 lb 14 oz, and birth length of' D0 M |4 Y5 {. b5 |/ }
20 inches. He was breast-fed throughout the first year: O$ H" Q1 J+ h* z, N" e+ y
of life and was still receiving breast milk along with
5 _2 j- w2 k) v5 Y& M W xsolid food. He had no hospitalizations or surgery, Z: a/ ?- u1 D# z Y
and his psychosocial and psychomotor development, y! B" ]/ d. t$ o1 K
was age appropriate.
9 h1 k" M( ]' A+ \5 o$ fThe family history was remarkable for the father,
9 q/ ?) p2 t/ n% ~who was diagnosed with hypothyroidism at age 16,
6 ?0 \! w' B! N$ O. Z4 kwhich was treated with thyroxine. The father’s) u9 N% e7 u4 O/ w7 M4 ]; l0 P
height was 6 feet, and he went through a somewhat
1 x0 T' d# h6 O" }7 Searly puberty and had stopped growing by age 14.! ^+ o3 U" G: i7 V& ]1 G, s
The father denied taking any other medication. The
# `0 Q% b( O% echild’s mother was in good health. Her menarche" J, n/ X% l0 F, L
was at 11 years of age, and her height was at 5 feet Q& _. X6 Z7 _. S3 d) k2 {
5 inches. There was no other family history of pre-9 y* V7 `. C7 \" |
cocious sexual development in the first-degree rela-
4 I1 |& c8 l$ }! V# wtives. There were no siblings.. D* D4 @7 Q+ K% J1 ]
Physical Examination
. P' P7 J& l+ d5 @The physical examination revealed a very active,
* w: p) u& `, T$ I0 [: zplayful, and healthy boy. The vital signs documented$ E' }* f# Z; j0 c; T$ B# {( C
a blood pressure of 85/50 mm Hg, his length was
' Y: Q& `2 `' n90 cm (>97th percentile), and his weight was 14.4 kg
+ C! q2 Z- P8 {- h& |, ^(also >97th percentile). The observed yearly growth
7 x1 E3 l* d9 x r0 N2 {( u$ ]/ Wvelocity was 30 cm (12 inches). The examination of9 I3 U C3 U2 R% r3 ]9 ]0 `
the neck revealed no thyroid enlargement.% g$ G' N O! `
The genitourinary examination was remarkable for
2 @$ n' v9 h2 |/ wenlargement of the penis, with a stretched length of% l( W2 l6 m+ V, B
8 cm and a width of 2 cm. The glans penis was very well2 j) m5 b/ W* U
developed. The pubic hair was Tanner II, mostly around
- \1 x$ n/ F) r- ]9 U8 D5 H540
3 ?! ]! U& j3 ^0 E' d! c6 Xat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from( [2 g5 C0 c( F& i' m& g! d
the base of the phallus and was dark and curled. The
" h. }) k" H, X' B; G" C% Qtesticular volume was prepubertal at 2 mL each.# ^$ O2 O x: f9 J7 s6 D8 t
The skin was moist and smooth and somewhat
. b; X- U8 o goily. No axillary hair was noted. There were no0 Z5 ~- c' X; e
abnormal skin pigmentations or café-au-lait spots.
5 L7 ~* D2 r/ t5 mNeurologic evaluation showed deep tendon reflex 2+
! O ~; ~ X, C: o- t. t: L. L3 zbilateral and symmetrical. There was no suggestion
6 e% _& j9 \6 k+ qof papilledema.) U( N* ^9 w. \4 a) x
Laboratory Evaluation4 F/ j5 \+ B; F5 O
The bone age was consistent with 28 months by( S: A$ u! A0 u) x; p/ U6 \/ ]
using the standard of Greulich and Pyle at a chrono-6 |2 k W) H4 H) v8 R. H/ J
logic age of 16 months (advanced).5 Chromosomal5 o: @1 ^1 E, z l% _ J. W0 X8 ^
karyotype was 46XY. The thyroid function test
0 S5 \, b- j+ Z3 J, t; D8 U( Mshowed a free T4 of 1.69 ng/dL, and thyroid stimu-' u8 X9 x: ~8 m1 r9 c
lating hormone level was 1.3 µIU/mL (both normal).
4 M/ m3 l0 C' j* `The concentrations of serum electrolytes, blood
$ b! t t+ m% Y+ gurea nitrogen, creatinine, and calcium all were7 v, r0 z8 A, j/ _7 \, S( S
within normal range for his age. The concentration5 p. r8 Z2 `- Z
of serum 17-hydroxyprogesterone was 16 ng/dL
* w" a9 d! n8 f4 F(normal, 3 to 90 ng/dL), androstenedione was 20
' s: I3 S) h! Y% F/ S7 Jng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-$ y% ^' ?* Q1 O9 T: A
terone was 38 ng/dL (normal, 50 to 760 ng/dL),: l2 G+ S1 c) _
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
' Y$ R4 b) Y* L% a49ng/dL), 11-desoxycortisol (specific compound S)
, ?! r! S5 ]6 Q' ^was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-4 f9 U8 e$ A+ @6 V- S
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total2 j7 x) ?+ |( B. x2 I5 z/ r/ v
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),- C _5 z& k* ?* x$ [3 k
and β-human chorionic gonadotropin was less than1 X4 L( N1 |# m/ [+ \: V7 S c
5 mIU/mL (normal <5 mIU/mL). Serum follicular( W0 O) j# m& M. M7 t1 l0 `: w
stimulating hormone and leuteinizing hormone
6 e( e5 J( p6 Z: l# r7 sconcentrations were less than 0.05 mIU/mL
8 {1 |3 e* O9 ]* B, ~* c- P(prepubertal)." R6 S, {0 [2 n, Z
The parents were notified about the laboratory! ?* [$ D! j, g8 }( I0 y
results and were informed that all of the tests were
. w0 B- I# p& h* C0 @2 Unormal except the testosterone level was high. The
. [% ^6 z9 ?, [: q3 ]follow-up visit was arranged within a few weeks to
1 B0 ~+ ?. |4 ]3 Dobtain testicular and abdominal sonograms; how-
9 U* V, K& z- @- [ever, the family did not return for 4 months.
6 w) W# y) @* h P8 b ^0 ]Physical examination at this time revealed that the
. a* o2 ~2 |0 ?7 A/ N. I/ B5 schild had grown 2.5 cm in 4 months and had gained
# _! a/ d g! D& E2 kg of weight. Physical examination remained
+ b0 f6 r A, X9 f S/ @unchanged. Surprisingly, the pubic hair almost com-
: H% X& D, P/ ypletely disappeared except for a few vellous hairs at
$ C( s4 o& q6 S* x6 Athe base of the phallus. Testicular volume was still 2
3 n; d: M) B8 d" N5 e0 SmL, and the size of the penis remained unchanged.- u3 B j/ u' E0 k
The mother also said that the boy was no longer hav-
- L9 Z! _' \9 q9 b% ?ing frequent erections.- {; f6 X7 A! R2 b/ l) y0 J1 u3 _
Both parents were again questioned about use of) U5 w/ m' D4 G; P3 S
any ointment/creams that they may have applied to/ m& d# O5 t9 S! V& L
the child’s skin. This time the father admitted the
& L$ ?; f" i7 y H! u* ?Topical Testosterone Exposure / Bhowmick et al 541/ a/ }2 ~( }8 G1 ^( ~3 \: X" U
use of testosterone gel twice daily that he was apply-, p, f9 {# f* \4 d+ b6 h' t
ing over his own shoulders, chest, and back area for
. H+ e: ^9 _4 d# [8 l+ xa year. The father also revealed he was embarrassed
7 ^, ?! l7 W8 o$ Z+ N+ uto disclose that he was using a testosterone gel pre-' b. ^- l8 M8 c
scribed by his family physician for decreased libido/ R. v# q' t# o. S6 u6 p
secondary to depression.+ Z+ b0 X1 R0 u4 d* g
The child slept in the same bed with parents.
7 ~8 E& M8 d. Q$ U7 \; y* T* rThe father would hug the baby and hold him on his
% [. X: K4 N M% @: vchest for a considerable period of time, causing sig-
) J# m' a' Q/ t3 T: j) b! n1 P' _4 d7 g0 dnificant bare skin contact between baby and father.
) h' f! P. `+ o0 P( W3 z2 jThe father also admitted that after the phone call,. z: r1 B9 ^9 `( _! `0 R+ n
when he learned the testosterone level in the baby
8 q# @4 R. h# l: E" U8 e6 B2 fwas high, he then read the product information" T+ v4 t: g1 f1 U3 h( t
packet and concluded that it was most likely the rea-
! E, L% U6 L1 g7 ^son for the child’s virilization. At that time, they a: h' O% F# Q1 Q/ U9 a
decided to put the baby in a separate bed, and the
3 Q+ Y2 h4 P9 h, c3 Z& vfather was not hugging him with bare skin and had
* Z) s; w: o% g; I5 O7 qbeen using protective clothing. A repeat testosterone
8 l% x0 o2 U3 L+ n3 Y( i! btest was ordered, but the family did not go to the' N5 t! L$ {, Z s2 K% p. j. X
laboratory to obtain the test.' e+ K! U# H$ n5 p; m
Discussion
% h3 m4 c/ o* F% {Precocious puberty in boys is defined as secondary
% Q) L/ W7 @) @8 m- Q7 Isexual development before 9 years of age.1,4
7 ?5 N5 t! H0 j3 mPrecocious puberty is termed as central (true) when6 w& S0 s, @& R8 U3 a: \, e5 B
it is caused by the premature activation of hypo-# d. S# N% n0 b
thalamic pituitary gonadal axis. CPP is more com-
+ f! ~0 }1 z8 i" q* kmon in girls than in boys.1,3 Most boys with CPP1 i/ U S i ~
may have a central nervous system lesion that is( ]/ z, J! j" ^6 y/ T
responsible for the early activation of the hypothal-$ ]: _( b; \9 ?" ]& j, n3 [7 E
amic pituitary gonadal axis.1-3 Thus, greater empha-
# e9 ~0 S2 K- C6 ~ h/ ]sis has been given to neuroradiologic imaging in
. z5 v/ X! u- b( hboys with precocious puberty. In addition to viril-
; J* I1 R/ M% N- \$ Q. Iization, the clinical hallmark of CPP is the symmet-
- B" B1 o0 p& y* o J- ~1 Nrical testicular growth secondary to stimulation by4 T6 ?8 q5 A$ Z% o' n
gonadotropins.1,32 B& O$ s: o* z ?( `( F
Gonadotropin-independent peripheral preco-
. s& E/ u5 w; T% u6 W4 C( V u; U, ucious puberty in boys also results from inappropriate I" k- ?% B& V4 [! S8 Q
androgenic stimulation from either endogenous or
$ D! b- X: d# d) g/ Pexogenous sources, nonpituitary gonadotropin stim-
1 T9 ^( Q Z# b' s2 ~/ Q1 i4 wulation, and rare activating mutations.3 Virilizing
( J' T- x4 d2 `& e) _congenital adrenal hyperplasia producing excessive
/ u+ ?+ K8 R9 h$ N% f9 m! b3 zadrenal androgens is a common cause of precocious
2 V( r: P) z# o2 d |! G0 L7 {puberty in boys.3,4" @9 `9 W+ {% ~/ K4 @
The most common form of congenital adrenal* k# {; Y* L0 s+ i/ Z+ W
hyperplasia is the 21-hydroxylase enzyme deficiency.4 d0 C6 L; i( V6 M
The 11-β hydroxylase deficiency may also result in
3 s. F6 g' W! {+ ~% wexcessive adrenal androgen production, and rarely,
# ^% s! n9 F3 Qan adrenal tumor may also cause adrenal androgen
* G: ~+ f7 K+ dexcess.1,3
- G& x* x# w8 n0 g& W; _9 K6 Oat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
9 O/ u+ a. g6 {: s542 Clinical Pediatrics / Vol. 46, No. 6, July 2007+ g9 f2 d; x% [0 C
A unique entity of male-limited gonadotropin-
0 i3 O0 U# G3 l( t' z* bindependent precocious puberty, which is also known
; Z3 R* G2 x1 |! L8 H4 has testotoxicosis, may cause precocious puberty at a
, t3 U& M7 o% j3 N! z1 T6 Uvery young age. The physical findings in these boys
5 A8 \% f ^6 U& Hwith this disorder are full pubertal development,
* I& I3 A9 C" ?8 ]including bilateral testicular growth, similar to boys
6 A, ?0 b+ u0 H! w' u, xwith CPP. The gonadotropin levels in this disorder
% |) c4 l( N/ X7 d; uare suppressed to prepubertal levels and do not show3 ^1 l$ q s3 [" G0 u
pubertal response of gonadotropin after gonadotropin-* _! U+ v" p" d5 w2 H
releasing hormone stimulation. This is a sex-linked
8 q* |1 h9 U* @5 U+ @autosomal dominant disorder that affects only
/ n# x; a" C4 kmales; therefore, other male members of the family4 A+ }) ?* E8 @, L4 L# s: o! \7 s3 F5 N
may have similar precocious puberty.3
( ]/ z: u8 t: H4 UIn our patient, physical examination was incon-: b* l0 k. T4 c! ?& \: A
sistent with true precocious puberty since his testi-
0 R* h7 E" D) Ecles were prepubertal in size. However, testotoxicosis
0 S# c) n# Q% _5 c9 nwas in the differential diagnosis because his father
% t( K8 q e4 `- {. W, `9 Hstarted puberty somewhat early, and occasionally,
" M& N, H/ L( k! H& `* Stesticular enlargement is not that evident in the( y; Q: x6 t0 {( t3 l4 Q0 m: n
beginning of this process.1 In the absence of a neg-$ ~4 o4 ~3 r7 `$ v/ k, \* e
ative initial history of androgen exposure, our
( B0 x \* P- h$ x. o, kbiggest concern was virilizing adrenal hyperplasia,2 P7 v; F% w, q6 Q( I+ J; E
either 21-hydroxylase deficiency or 11-β hydroxylase! {6 x$ f1 d; f% \
deficiency. Those diagnoses were excluded by find-' ] D6 T; e; F: T! D- A/ _
ing the normal level of adrenal steroids.
1 C! S7 L: @0 ZThe diagnosis of exogenous androgens was strongly
5 P6 h. P3 T6 O6 h& k1 Qsuspected in a follow-up visit after 4 months because
+ M4 Q1 T" W4 xthe physical examination revealed the complete disap-# D R2 B+ }; f/ e. a
pearance of pubic hair, normal growth velocity, and
$ d. O- u& F! M8 |; V( Fdecreased erections. The father admitted using a testos-
, C% r% S/ D9 Y8 L6 `terone gel, which he concealed at first visit. He was. ?, j. A+ P+ Q( V8 J; T
using it rather frequently, twice a day. The Physicians’
n0 U( ^3 l$ ~/ f% ]6 |Desk Reference, or package insert of this product, gel or" D5 \' U3 ^" ]7 C' G
cream, cautions about dermal testosterone transfer to
5 }$ x0 o6 \: r, t$ \- {unprotected females through direct skin exposure.- V5 T- X$ I9 k
Serum testosterone level was found to be 2 times the" k' A: b* k" c" X3 \6 c
baseline value in those females who were exposed to
0 Z' n) n8 ?- a/ Z Q+ zeven 15 minutes of direct skin contact with their male v- s5 ~ W4 |2 O2 q: C
partners.6 However, when a shirt covered the applica-- P( v2 o( [, y$ x; l/ P
tion site, this testosterone transfer was prevented.
. }8 g' ~. B9 m( |' Y: }: XOur patient’s testosterone level was 60 ng/mL,
J3 U+ ~( l8 @: ^which was clearly high. Some studies suggest that
: M1 N3 ^$ a Y& Z& H: [0 Gdermal conversion of testosterone to dihydrotestos-
# W3 c3 }2 K2 l0 k2 |* A; N3 pterone, which is a more potent metabolite, is more
; d" B2 s1 M" p7 U: Hactive in young children exposed to testosterone
& r! Y h# H1 u7 L4 Iexogenously7; however, we did not measure a dihy-
E; E. T4 L( `( }1 d9 G6 odrotestosterone level in our patient. In addition to7 e# I! Y I5 \* }2 D
virilization, exposure to exogenous testosterone in
6 x) [3 y/ I- ^: w0 lchildren results in an increase in growth velocity and: e/ g$ t( N1 U7 [
advanced bone age, as seen in our patient.
/ P- T, K' H% ?The long-term effect of androgen exposure during5 I0 W9 ~7 J' w% @5 y) ?
early childhood on pubertal development and final$ _7 @) {0 w, ?0 f, }0 H6 A4 n
adult height are not fully known and always remain$ ^( H3 O, I0 u3 F# f
a concern. Children treated with short-term testos-
7 d9 ?+ g9 T4 X0 i- N% I% I" N) Iterone injection or topical androgen may exhibit some0 H( Z5 y; L8 r4 ` I9 d" e' ]
acceleration of the skeletal maturation; however, after q, v1 I$ R& C. [) F) ~$ A5 A
cessation of treatment, the rate of bone maturation) ~* H) J3 p; _ ?) q0 M
decelerates and gradually returns to normal.8,9
& R8 V5 h$ y( y. r0 M/ A, g# c* PThere are conflicting reports and controversy
+ e6 f% J% u& R2 H" rover the effect of early androgen exposure on adult8 L/ x' Y* l. j/ k) \$ N4 V2 g
penile length.10,11 Some reports suggest subnormal$ s$ X! a4 z2 a
adult penile length, apparently because of downreg-- [$ {7 H; I) R. v8 H
ulation of androgen receptor number.10,12 However,
\, K3 S- P$ G' U" [Sutherland et al13 did not find a correlation between
. [. W Q! F2 ?( Mchildhood testosterone exposure and reduced adult
/ ^1 @4 B& d4 m" b, mpenile length in clinical studies.# E3 R% F6 [3 q* c; i+ T
Nonetheless, we do not believe our patient is
# B" L3 k# @' T" ^6 y0 a p' tgoing to experience any of the untoward effects from9 h- S& A# F8 S
testosterone exposure as mentioned earlier because5 H- o3 ~3 j0 a
the exposure was not for a prolonged period of time.
# U! R/ R7 W# KAlthough the bone age was advanced at the time of
- J) t; e2 C) j# p3 N" Odiagnosis, the child had a normal growth velocity at; R% l3 a6 c. Z: }' S! H N* }
the follow-up visit. It is hoped that his final adult3 W U$ O3 F0 V4 M( X
height will not be affected.) i4 a4 A- f* f
Although rarely reported, the widespread avail-
- r! h! f+ G: h6 S8 ]" T3 cability of androgen products in our society may
+ ?% ?, r% [$ s& @, bindeed cause more virilization in male or female
1 G$ ]% L, c$ _; f7 schildren than one would realize. Exposure to andro-9 T9 }2 k; @! e f5 c U
gen products must be considered and specific ques- F' c5 \0 [7 ?" G- t8 X
tioning about the use of a testosterone product or
; {7 t, V/ D4 x R8 s* H6 L% ]$ Igel should be asked of the family members during
' _- t' P7 S" u& mthe evaluation of any children who present with vir-
; H; g2 [1 r3 x& bilization or peripheral precocious puberty. The diag-8 X# H" F4 [# {! Z ^7 C2 G
nosis can be established by just a few tests and by( H \( O- _- B) |5 |7 d
appropriate history. The inability to obtain such a4 }! O. w: T; T8 V
history, or failure to ask the specific questions, may
! H9 G- o' e ^6 Q, T. i" }8 Cresult in extensive, unnecessary, and expensive
3 c" K( c+ S9 k- @investigation. The primary care physician should be* L5 s3 ~) H5 V2 ^
aware of this fact, because most of these children
8 m( D1 |7 {6 s( L$ n6 Amay initially present in their practice. The Physicians’# R3 h; y* Y+ O
Desk Reference and package insert should also put a
3 d8 G& ~* r7 B. lwarning about the virilizing effect on a male or
T9 q! T: q5 ] Gfemale child who might come in contact with some-) N$ I9 u# D! p- z5 l4 X8 p9 E/ x
one using any of these products.
; P! n) K7 _+ J9 S7 m: |References
9 y- s. K2 [* i- Z% e1. Styne DM. The testes: disorder of sexual differentiation$ e* R' R a& D' C9 ^0 E
and puberty in the male. In: Sperling MA, ed. Pediatric$ l' O3 F9 U" g+ |
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
9 l' R, r& o9 H: G2002: 565-628.$ S Q+ J( ~. R5 h( [
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious: t2 o" L0 z& E8 Y! ?. h" N% O2 G+ K
puberty in children with tumours of the suprasellar pineal! N' @! ~2 V+ K8 Y( |% n- d+ q2 J3 D
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from, n$ E+ [9 N* c! c2 y
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7 R& M# q( B4 b/ z: T9 X gareas: organic central precocious puberty. Acta Paediatr.8 ?; G5 ~! e( D7 `
2001;90:751-756.
6 @. o [* `4 p3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
: I1 w" H7 L0 c) E# H* L- mPediatric Endocrinology. 4th ed. New York, NY: Marcel# K7 {: O- }* B/ v1 u9 E
Dekker Inc; 2003:211-238.2 V; I8 s0 g7 L& H$ c
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
' p3 j3 F, ]( N5 O, N O/ H7 Fdevelopment in a two-year-old boy induced by topical
" f, [" f# X4 p6 K3 B iexposure to testosterone. Pediatrics. 1999;104:e23.
+ X5 }# E- S* ^3 H2 L6 u6 w& R: t5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
0 j% r/ J; D/ M. A( r- r' y$ f }1 xSkeletal Development of the Hand and Wrist. 2nd ed.# ~9 v6 L6 C: F+ I- I; A' f% r' J
Stanford, CA: Stanford University Press; 1959.
8 j$ q# E: D, s, q6. Physicians’ Desk Reference. Androgel 1% testosterone,/ } w, N4 h+ |9 S
Unimed Pharmaceutical Inc. Montvale, NJ: Medical; l% y$ b; C6 g% b; n B
Economics Company, Inc; 2004:3239-3241.
- o$ r5 b4 t- l. Q7 @7. Klugo RC, Cerny JC. Response of micropenis to topical+ C# v9 `$ V/ s6 n( b, c* I
testosterone and gonadotropin. J Urol. 1978;119:
1 y9 e" W/ h1 [* M: q% p( M667-668.
( d- x+ _, ]4 ?3 n8 m; a& X T8. Guthrie RD, Smith DW, Graham CB. Testosterone/ Y: ^1 g5 T0 V# J E
treatment for micropenis during early childhood. J Pediatr.
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