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is a significant concern for physicians. Central
, s6 \" U! _- z2 }- Aprecocious puberty (CPP), which is mediated
, d5 r! Z3 p3 N% \6 p% U& `through the hypothalamic pituitary gonadal axis, has+ e: o) D7 N, V$ `: Q; q+ `- q- z
a higher incidence of organic central nervous system) ~; a9 s2 |$ P' m" Z$ Y6 F
lesions in boys.1,2 Virilization in boys, as manifested. b, N+ {* e/ M% I' i0 ~$ T4 ^
by enlargement of the penis, development of pubic- `9 J4 b5 R% K z6 a, o, h
hair, and facial acne without enlargement of testi-" X5 u3 t2 D, h' }/ E/ c
cles, suggests peripheral or pseudopuberty.1-3 We
; D# P4 n% S+ |# freport a 16-month-old boy who presented with the5 I% T2 l6 U1 \7 h' H0 g7 C' \
enlargement of the phallus and pubic hair develop-
# ]- U1 R- E* l2 M0 c, H/ V- \ment without testicular enlargement, which was due" O: T3 O7 `0 ]: f4 p V
to the unintentional exposure to androgen gel used by& {8 o( T, F: j' C
the father. The family initially concealed this infor-
! |8 P& o. z" ~$ Q8 J, ~mation, resulting in an extensive work-up for this
/ U6 a4 H) Z; |! |child. Given the widespread and easy availability of8 @9 u+ x6 Y4 x' o6 M
testosterone gel and cream, we believe this is proba-
. C+ n6 G+ K8 p+ t1 \5 h& ^! n0 ibly more common than the rare case report in the: U- l2 d& I0 | E. Q8 q
literature.44 k" Q& ^( t/ Z- V, ~" X6 R: k
Patient Report
& P, ~& r1 i- h& AA 16-month-old white child was referred to the1 B: j. }6 s( k9 K
endocrine clinic by his pediatrician with the concern
! t5 w, e ~3 V5 i" r( _6 J) ?0 Nof early sexual development. His mother noticed6 _& m9 z' e( B
light colored pubic hair development when he was
5 W. D8 ]! Y% \" x" E4 ?From the 1Division of Pediatric Endocrinology, 2University of
$ _# v) x7 j2 e1 ySouth Alabama Medical Center, Mobile, Alabama.
% \( F7 e- d% v( ?3 b% p) zAddress correspondence to: Samar K. Bhowmick, MD, FACE,) [% l7 l5 |) r" g
Professor of Pediatrics, University of South Alabama, College of! s, A3 E1 k9 y' n+ M% q+ i. U
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;, |+ y; [0 F3 X. @/ G" k
e-mail: [email protected].
6 }" W- H7 p9 g Aabout 6 to 7 months old, which progressively became
8 Y: v0 j* A, N9 A Tdarker. She was also concerned about the enlarge-* r9 q- Y' H& i: Q) Y. ?& L
ment of his penis and frequent erections. The child P% f/ R& ?7 }/ Q& U
was the product of a full-term normal delivery, with* @) ]0 u- X, Y7 M, \. ^
a birth weight of 7 lb 14 oz, and birth length of
x$ N2 C; d9 d+ B0 h5 w3 r! Y20 inches. He was breast-fed throughout the first year8 P Y* `4 ?6 @
of life and was still receiving breast milk along with9 l6 k1 g U3 A+ N8 f/ O; p
solid food. He had no hospitalizations or surgery,
: v" K! c8 n* ]9 m: z: Nand his psychosocial and psychomotor development
2 E& \) ]5 Y Nwas age appropriate.
4 z& e" P- t+ M( G+ ?* e" j) LThe family history was remarkable for the father,; ^+ v+ X, Q6 I9 x7 N
who was diagnosed with hypothyroidism at age 16,- {. ]1 U- B' w7 f) f/ {( M
which was treated with thyroxine. The father’s
! H7 D* T/ N3 t7 R$ uheight was 6 feet, and he went through a somewhat
$ l9 U; ^1 t" o5 k; Q" xearly puberty and had stopped growing by age 14.7 s+ x. {- F T& E+ H+ `
The father denied taking any other medication. The
' B' i' ^0 ^1 h- r7 \child’s mother was in good health. Her menarche8 j$ ]3 k; T$ T
was at 11 years of age, and her height was at 5 feet
; V6 E4 ^6 w' N% {, x$ r4 ^7 x6 S# n5 inches. There was no other family history of pre-- a4 V# ^5 s! ^. f
cocious sexual development in the first-degree rela-/ i4 I9 l+ d" S$ e* e
tives. There were no siblings.' t" @2 ~7 v8 _
Physical Examination
" {+ B1 f& N! aThe physical examination revealed a very active,
m4 y8 Q/ h3 P+ g1 Y2 hplayful, and healthy boy. The vital signs documented
8 O. A( \" Y# Y4 W' _2 J2 Ma blood pressure of 85/50 mm Hg, his length was
7 ] W! D; S; a; ?/ t- o2 O90 cm (>97th percentile), and his weight was 14.4 kg- x0 ~- k+ v3 U( ^
(also >97th percentile). The observed yearly growth# V b% E& L4 A; b+ t$ E
velocity was 30 cm (12 inches). The examination of! K* B L* r* D/ j+ D6 F( W5 c: h
the neck revealed no thyroid enlargement.
# I9 ?. p& N# b6 D t, r1 ZThe genitourinary examination was remarkable for
; D5 Z+ U) N% i) M4 penlargement of the penis, with a stretched length of
7 `6 ?7 j3 s' i6 W, K6 _) a# M8 cm and a width of 2 cm. The glans penis was very well
k/ {0 y/ |6 {6 g+ p9 ^developed. The pubic hair was Tanner II, mostly around; Z+ S& |6 Y. h7 z: b E, n- t
540
0 o* ^" S9 t1 F. q* f" cat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from6 z3 t6 ]4 m; r2 o s, D6 a
the base of the phallus and was dark and curled. The+ N1 w+ c& q4 F
testicular volume was prepubertal at 2 mL each.
3 @+ c6 Q8 ^; M+ d+ w4 NThe skin was moist and smooth and somewhat9 ^6 }! _7 a7 \
oily. No axillary hair was noted. There were no
7 h7 h4 d. @+ ` [: C: J7 r8 G; o2 Labnormal skin pigmentations or café-au-lait spots.7 U( F5 C: ]) N$ V; Z% `# t0 o6 H% n8 V
Neurologic evaluation showed deep tendon reflex 2+8 L, }* x$ m. J' p
bilateral and symmetrical. There was no suggestion
( s( J1 h9 x: M( h+ l8 fof papilledema.. @ s( A ~$ @4 r: e& ]
Laboratory Evaluation
0 x5 I. {) {8 C w. u, MThe bone age was consistent with 28 months by" I1 y# M# _/ w
using the standard of Greulich and Pyle at a chrono-" t" T# n0 j+ @$ _$ ?
logic age of 16 months (advanced).5 Chromosomal
3 Q; {3 \9 S: z1 K" g* T$ e5 Okaryotype was 46XY. The thyroid function test! U+ ~$ [6 K+ @4 N
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
9 w- O8 k- J% J* nlating hormone level was 1.3 µIU/mL (both normal). A( _6 p* {9 B% S. \6 L
The concentrations of serum electrolytes, blood
5 Z. B. K: S; S" {! Xurea nitrogen, creatinine, and calcium all were
1 c, E, b& v6 h/ y( D7 Fwithin normal range for his age. The concentration
- }8 M! K% Z! d1 P. A+ X, s( y0 Rof serum 17-hydroxyprogesterone was 16 ng/dL
1 Z- u* Z1 L4 _4 X0 U$ O(normal, 3 to 90 ng/dL), androstenedione was 20+ M& e4 m4 C% w& ]3 h/ M. O
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-3 K! c6 V9 ^7 E: W1 k9 D
terone was 38 ng/dL (normal, 50 to 760 ng/dL),/ ^( E$ d9 V# I3 d
desoxycorticosterone was 4.3 ng/dL (normal, 7 to5 r4 r' _; b+ W2 D' t
49ng/dL), 11-desoxycortisol (specific compound S)
5 l- b% X7 b- A) J# c0 lwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
! i- |# z9 i# }9 [, E! \1 [tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
- X/ X) _. X. Vtestosterone was 60 ng/dL (normal <3 to 10 ng/dL),; b! d+ w9 L4 ]" ^0 a) O
and β-human chorionic gonadotropin was less than
- Y, d5 l! S" t7 o/ m" f. c8 N5 mIU/mL (normal <5 mIU/mL). Serum follicular9 G& E- b* q: P/ s) S5 D
stimulating hormone and leuteinizing hormone7 {9 d6 t/ `, o( r8 l& z
concentrations were less than 0.05 mIU/mL$ v+ j. A1 F+ M+ b2 U9 v
(prepubertal).
8 n8 t6 S" l$ G8 s& ^3 nThe parents were notified about the laboratory# ?5 H: z0 j, S) j# b8 [
results and were informed that all of the tests were
, ~; m+ w6 ]: ^# i6 jnormal except the testosterone level was high. The- w) F5 R' F! |- v- J$ ^
follow-up visit was arranged within a few weeks to
, O: F6 o% E: F; j8 S* l3 G1 `9 Y Eobtain testicular and abdominal sonograms; how-
, ]8 ~" p2 B4 V i; hever, the family did not return for 4 months.
( x, G' c/ Q1 a* A6 l- }Physical examination at this time revealed that the
! }' ^+ W9 l1 gchild had grown 2.5 cm in 4 months and had gained, W( j0 X$ Z8 Z4 |8 N$ V: i% U2 X
2 kg of weight. Physical examination remained- ]9 v& @- k0 ?$ y( b& Q1 C9 t+ d' w+ }
unchanged. Surprisingly, the pubic hair almost com-
- @0 D( [' T$ `pletely disappeared except for a few vellous hairs at* R$ h% D# \& w" P, V3 ?
the base of the phallus. Testicular volume was still 2
; n3 t* X! F0 i& g# BmL, and the size of the penis remained unchanged.
7 X* z3 b9 R( B& B# m( E# B+ XThe mother also said that the boy was no longer hav-
n m8 c% Z4 ying frequent erections.
! Q+ n6 n0 n- XBoth parents were again questioned about use of5 n u& o$ [4 C
any ointment/creams that they may have applied to3 A5 o3 L& r# |, ?
the child’s skin. This time the father admitted the
: {5 | i2 O. `Topical Testosterone Exposure / Bhowmick et al 541
" P7 U+ V4 T4 D& Nuse of testosterone gel twice daily that he was apply-1 k- C% W% X0 p8 j/ d7 H m, n
ing over his own shoulders, chest, and back area for
4 j' T7 L' c: E1 ]; F- w6 E' l( ~a year. The father also revealed he was embarrassed8 I$ o5 M5 ^& E9 w4 i0 q3 Y
to disclose that he was using a testosterone gel pre-5 P0 P4 D5 m% z; v& ]( o
scribed by his family physician for decreased libido
2 ^7 u) c/ l$ w6 rsecondary to depression.
3 O, [) a/ l. H* CThe child slept in the same bed with parents.
7 ?, A+ i0 n. c. n' \The father would hug the baby and hold him on his1 k2 p2 j0 M; E. E
chest for a considerable period of time, causing sig-
# X3 ? ] i% Z |! p, R4 Qnificant bare skin contact between baby and father.
! g- U( Y+ X1 U! R/ O' e; U. MThe father also admitted that after the phone call,5 N/ \* Z% D; V z3 q
when he learned the testosterone level in the baby- a+ s5 P+ _( _3 r) Q% B2 o
was high, he then read the product information
' {. E; C+ E9 y( x1 s$ { Mpacket and concluded that it was most likely the rea-0 d5 m; v; R- J. g
son for the child’s virilization. At that time, they
: h9 f3 ], R: R0 z) b, idecided to put the baby in a separate bed, and the8 X: h$ e5 }% T( o: a5 h
father was not hugging him with bare skin and had
8 O. u+ F: o" b) Qbeen using protective clothing. A repeat testosterone
& d: w; W" F$ x: d' ktest was ordered, but the family did not go to the, ]# X1 I8 @$ ?; B. E
laboratory to obtain the test.
7 j# ?0 g+ n! yDiscussion
% a! g! T& Y p) g5 y; FPrecocious puberty in boys is defined as secondary
) @6 n4 ]# g- C, n, o$ vsexual development before 9 years of age.1,45 S2 y0 B3 Z* ~' V. |# f# A
Precocious puberty is termed as central (true) when7 J. ~3 x/ t4 ]8 G+ n9 S
it is caused by the premature activation of hypo-
2 v: z; M: c$ i" v9 }2 I; }thalamic pituitary gonadal axis. CPP is more com-7 ^/ m' E* W. `
mon in girls than in boys.1,3 Most boys with CPP( }+ B& q& p# M7 r. q
may have a central nervous system lesion that is" d' C! x( `1 V1 u4 J# ?
responsible for the early activation of the hypothal-% H, N$ ]4 \9 M8 x
amic pituitary gonadal axis.1-3 Thus, greater empha-/ { \. I; e) K
sis has been given to neuroradiologic imaging in2 G1 S/ w( d! P
boys with precocious puberty. In addition to viril-# Z5 v+ s* p; K/ }7 V
ization, the clinical hallmark of CPP is the symmet-
; h1 x4 b- s. B$ ?0 z g4 I& Srical testicular growth secondary to stimulation by
- X A" b7 @1 V: agonadotropins.1,3; Z; F# T, p- s' h' B* [4 \! u4 e+ K5 m
Gonadotropin-independent peripheral preco-
) Q4 A* v. L1 g. {9 N8 R2 D& o9 bcious puberty in boys also results from inappropriate
% l; g H1 P/ [ J% Iandrogenic stimulation from either endogenous or5 K" [ @9 y' j$ |
exogenous sources, nonpituitary gonadotropin stim-
4 o. [4 l9 Z ?( B# b( K+ Kulation, and rare activating mutations.3 Virilizing* E# M3 b2 F) ~# ?% M
congenital adrenal hyperplasia producing excessive
6 w! t. g( X5 gadrenal androgens is a common cause of precocious5 T M: H- d) h( z0 _7 V* q
puberty in boys.3,4+ A4 h" |8 L- e
The most common form of congenital adrenal- k' G7 P+ \; O! X% {; o2 ]7 i
hyperplasia is the 21-hydroxylase enzyme deficiency.
2 }% V6 ^( V5 e2 p3 R; c- _( OThe 11-β hydroxylase deficiency may also result in' ?/ E7 N% O7 A" s. J' @
excessive adrenal androgen production, and rarely,1 \: X1 K, T; d' l1 }" A
an adrenal tumor may also cause adrenal androgen ^ \) K9 m3 z4 C \
excess.1,3; V$ T6 Q8 `2 w! J1 K% o' J
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
6 p, B# X/ ]" b0 U542 Clinical Pediatrics / Vol. 46, No. 6, July 2007' w* O/ i& g; P' ]- |3 r
A unique entity of male-limited gonadotropin-0 G* }9 V. u) i" F' N4 l' S8 D9 O4 t
independent precocious puberty, which is also known
! u0 {, q t+ y* Ias testotoxicosis, may cause precocious puberty at a
$ x% _) n/ }+ _! [! P$ Pvery young age. The physical findings in these boys% D3 e6 [5 b" P$ C
with this disorder are full pubertal development,: _) h7 i) X7 g- s" V
including bilateral testicular growth, similar to boys. j/ e. i% w1 i R, l7 ]
with CPP. The gonadotropin levels in this disorder
/ M5 ~. t2 Q8 L: ~are suppressed to prepubertal levels and do not show
9 F: b3 K! s# `% T/ b; v8 kpubertal response of gonadotropin after gonadotropin-* q* B" `- W- H7 b( `! `" ~5 w
releasing hormone stimulation. This is a sex-linked
T4 i9 [5 f- j# y5 P. iautosomal dominant disorder that affects only
' I+ J: T$ i- ?$ S9 c' E# B0 m; mmales; therefore, other male members of the family7 ^7 \, M1 B( [! m
may have similar precocious puberty.3% a. j0 B8 T. I0 C0 `" P
In our patient, physical examination was incon-
7 M, |$ N7 H! l3 w ysistent with true precocious puberty since his testi-% u2 u: }, I: G8 M8 Q* }
cles were prepubertal in size. However, testotoxicosis& F( g( W3 `! ~& I3 a7 p6 }3 P
was in the differential diagnosis because his father% h! T3 F& F# J# ], a2 E1 b
started puberty somewhat early, and occasionally,
$ h8 S$ A1 b( u; mtesticular enlargement is not that evident in the
" U( P1 I3 N+ z/ d/ Q R* ybeginning of this process.1 In the absence of a neg-
" g* Q, @( u8 U1 c0 hative initial history of androgen exposure, our
% V; J% Z* u' g( N' Z7 |biggest concern was virilizing adrenal hyperplasia,+ ~- r3 [& q ]3 w
either 21-hydroxylase deficiency or 11-β hydroxylase
9 B+ b$ ~; N: w7 r" d5 }deficiency. Those diagnoses were excluded by find-
: J6 B q; s" ?ing the normal level of adrenal steroids.& l1 g4 G) i% l
The diagnosis of exogenous androgens was strongly
1 N- ?& F8 G0 \- g; i' T$ ysuspected in a follow-up visit after 4 months because
4 v# E1 y* S! G$ w; X5 F( Gthe physical examination revealed the complete disap- m. s W' s- j* ?- Z
pearance of pubic hair, normal growth velocity, and
& ]1 l2 Z0 y; ddecreased erections. The father admitted using a testos-
' z. `/ H9 s, y/ r" {& k# pterone gel, which he concealed at first visit. He was J% j; H" e6 l+ `8 l
using it rather frequently, twice a day. The Physicians’( \: O6 z" U1 _9 Q
Desk Reference, or package insert of this product, gel or
6 @, W' j. E* g; o. V0 C M: F% l8 Acream, cautions about dermal testosterone transfer to
3 L4 S+ D' N! Y7 M/ L) lunprotected females through direct skin exposure.
9 F( w* R0 A ]0 G- NSerum testosterone level was found to be 2 times the
5 I! J) M; I# B* Y% w0 r6 Ybaseline value in those females who were exposed to
4 m( N2 z1 i0 M( N2 Eeven 15 minutes of direct skin contact with their male$ M b: M: @' t" Q/ N9 d9 u& A
partners.6 However, when a shirt covered the applica-0 W4 r! K: ?" n2 H
tion site, this testosterone transfer was prevented.
+ H9 Q8 M% w& iOur patient’s testosterone level was 60 ng/mL,
8 u% @# o( E$ t* lwhich was clearly high. Some studies suggest that3 \8 k. o' Z+ Z9 x$ F& U7 X, b* E: g
dermal conversion of testosterone to dihydrotestos-4 V. D# `, q! I5 U) u
terone, which is a more potent metabolite, is more
4 ~( s0 P3 F- t9 ^) V1 G# Aactive in young children exposed to testosterone; p% O% ?7 J! g, P# d- ~: m9 ?2 z1 m
exogenously7; however, we did not measure a dihy-
6 b7 }5 U* O# xdrotestosterone level in our patient. In addition to
6 v0 M3 E" G7 y' xvirilization, exposure to exogenous testosterone in+ I* l( o1 I P* o2 i
children results in an increase in growth velocity and
* t3 j! v! s9 U( ?advanced bone age, as seen in our patient.& Z- y) y" e |- b+ j3 p) {
The long-term effect of androgen exposure during1 l" A7 z9 h! g0 [0 X* G! s' `9 `- M
early childhood on pubertal development and final+ F4 a$ |, F) t! b* W
adult height are not fully known and always remain! l+ I1 B; F ?: ?6 J
a concern. Children treated with short-term testos-
5 p/ W. T9 z( h# Xterone injection or topical androgen may exhibit some
9 J7 D3 @ p, B2 f2 W0 _acceleration of the skeletal maturation; however, after) v a$ r! A. H" L. e1 b4 P7 g, W
cessation of treatment, the rate of bone maturation
+ Y( X6 T( y) ^% E# ^& J; ydecelerates and gradually returns to normal.8,9
0 \; n: {5 V+ Q" A' c6 pThere are conflicting reports and controversy- e) ` ] k% A
over the effect of early androgen exposure on adult
, O7 p( N8 @. H: M6 w9 J) rpenile length.10,11 Some reports suggest subnormal% l1 H# x# [% j' w v
adult penile length, apparently because of downreg-, |2 K4 F7 a6 N+ c" \" F6 Q- t
ulation of androgen receptor number.10,12 However,
' V1 Z: u9 p+ C+ _7 aSutherland et al13 did not find a correlation between( ^+ q2 G$ M% y4 S( \
childhood testosterone exposure and reduced adult; N2 G" \) K5 e5 o' b o
penile length in clinical studies.
5 F- v0 H- _* k. ]; G2 ZNonetheless, we do not believe our patient is6 m" }0 o* G. Y3 b
going to experience any of the untoward effects from
: m$ M9 @2 |& ~/ I# p2 p+ atestosterone exposure as mentioned earlier because
8 x* j7 C$ O; ]' }. Z* H) v* mthe exposure was not for a prolonged period of time.
8 k2 q" r/ o2 d FAlthough the bone age was advanced at the time of
# O3 `6 k2 ]$ `( M5 [diagnosis, the child had a normal growth velocity at
! W8 h# O; I; t# q2 ]the follow-up visit. It is hoped that his final adult
# N6 I1 E. b5 W* Qheight will not be affected.$ q- r# }/ |/ N- _( X& i
Although rarely reported, the widespread avail-& L9 j6 u4 D# P, s
ability of androgen products in our society may$ a/ C0 U* X/ O
indeed cause more virilization in male or female
# t' n4 U' U, |* B7 y: jchildren than one would realize. Exposure to andro-( E$ I5 ]8 b# M; j. A0 t
gen products must be considered and specific ques-
- Z8 b2 q' F& |6 [7 ]tioning about the use of a testosterone product or
% d5 b4 y/ t' }' C/ A2 I' Cgel should be asked of the family members during- G% N& u, r- ^2 T
the evaluation of any children who present with vir-
; ]9 [( b$ G7 V# [7 O9 o6 rilization or peripheral precocious puberty. The diag-- ^. j4 o1 s) c6 B& l7 W# ]. ]; v6 L$ R
nosis can be established by just a few tests and by5 f' p# U1 G5 X2 }
appropriate history. The inability to obtain such a
; P1 F; J+ A0 l( `: w- ~/ Ghistory, or failure to ask the specific questions, may$ z* w* j8 R2 X& p, `
result in extensive, unnecessary, and expensive
1 R, @" m$ }9 a$ Pinvestigation. The primary care physician should be6 F- M& g# n- k/ I
aware of this fact, because most of these children
4 v+ L) d% |+ Fmay initially present in their practice. The Physicians’0 `3 @5 G1 Q$ u7 L, M) u
Desk Reference and package insert should also put a9 b( d- C9 A, m5 S! f; W& ?
warning about the virilizing effect on a male or$ P6 \( w' p& b M
female child who might come in contact with some-( p. u- e- i; a; t' X- g
one using any of these products." j9 ]3 t. P5 ?* V
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) D2 ~# ~# F- F6 d' N2002: 565-628." \& [2 {* F9 u9 {& u* E
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious0 [6 Y# { A5 Z. v
puberty in children with tumours of the suprasellar pineal
( G7 a8 j+ @. Oat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from) Q2 i, c- I1 \- I+ |% O
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development in a two-year-old boy induced by topical
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# ?1 [5 u7 k! Z! j9 m" pSkeletal Development of the Hand and Wrist. 2nd ed.
) i3 p5 p+ k' n: _4 LStanford, CA: Stanford University Press; 1959.
1 H- a0 @$ T- T& b6 d- Y1 l5 k6. Physicians’ Desk Reference. Androgel 1% testosterone,
* W3 E- f" n& ^" RUnimed Pharmaceutical Inc. Montvale, NJ: Medical2 j0 T9 e3 T2 \# [/ Z6 G
Economics Company, Inc; 2004:3239-3241.
# {" F; K. e, \& y7. Klugo RC, Cerny JC. Response of micropenis to topical
. v: S( C. }( d$ @+ xtestosterone and gonadotropin. J Urol. 1978;119:
# |) u: |9 \: L667-668.
3 T) |1 |2 x/ C2 f9 G8. Guthrie RD, Smith DW, Graham CB. Testosterone
4 c, P( m3 } {: u% y w' Otreatment for micropenis during early childhood. J Pediatr.4 U4 i, T- {% S. C* X
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