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is a significant concern for physicians. Central6 |1 O9 O6 z0 d4 N2 a
precocious puberty (CPP), which is mediated* [) I: i2 ]2 }
through the hypothalamic pituitary gonadal axis, has
* o& n3 k( k$ c, I6 Da higher incidence of organic central nervous system
% @1 a; t: r5 C" B: W2 z$ Jlesions in boys.1,2 Virilization in boys, as manifested/ o6 u1 N! V! J y
by enlargement of the penis, development of pubic
+ v9 H& B1 i8 i7 @6 N% Lhair, and facial acne without enlargement of testi-
: X' F4 [* o7 D/ U- |) d6 ucles, suggests peripheral or pseudopuberty.1-3 We: n [3 g1 W1 v
report a 16-month-old boy who presented with the
, K' D# t# h2 i- m v& ~enlargement of the phallus and pubic hair develop-3 Q1 K) V3 ~. c5 M+ A. w: O' \, b
ment without testicular enlargement, which was due
+ B- c/ u5 e( `4 lto the unintentional exposure to androgen gel used by/ O- o5 ^5 h6 S- T: m
the father. The family initially concealed this infor-
) W" z4 e2 R$ @) q" z6 V/ z- K% M6 ]mation, resulting in an extensive work-up for this _$ |+ I. v) R+ X0 _
child. Given the widespread and easy availability of( H8 F- q; k& x+ {
testosterone gel and cream, we believe this is proba-
( y0 Q& u# J: {9 ?bly more common than the rare case report in the f+ Z+ [1 U8 N {
literature.4' t1 c) u8 \+ R9 A! P g: g! e
Patient Report
# r1 d7 H' C7 [# |A 16-month-old white child was referred to the
- \4 R6 Z- u& pendocrine clinic by his pediatrician with the concern
* x Y: G; S* M: Hof early sexual development. His mother noticed' n- P" K- r6 }
light colored pubic hair development when he was
! S2 c- K3 ?" V( PFrom the 1Division of Pediatric Endocrinology, 2University of
1 s4 Z3 o* {1 a; ?, l3 ~& cSouth Alabama Medical Center, Mobile, Alabama.
1 u( \# d7 Z* b: c; TAddress correspondence to: Samar K. Bhowmick, MD, FACE,3 @3 B6 u0 |: Y0 x3 H( u
Professor of Pediatrics, University of South Alabama, College of
! x8 Y; `2 A$ ]0 PMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;8 M5 x0 F$ m# F) {, e; K- b
e-mail: [email protected].' Z5 S. g6 K* r; \, R* a
about 6 to 7 months old, which progressively became6 D- _2 Z' r: _2 a
darker. She was also concerned about the enlarge-' D- q1 z" Y$ [$ X) C5 a2 f
ment of his penis and frequent erections. The child
$ W. h5 r1 B$ `9 j0 A6 D! U1 i& Wwas the product of a full-term normal delivery, with
4 n; E7 `4 y' j1 e+ Ga birth weight of 7 lb 14 oz, and birth length of
A% A: l& O6 M; J/ ^9 x20 inches. He was breast-fed throughout the first year7 {+ I+ \, x- P V& i3 ^
of life and was still receiving breast milk along with
- E9 S8 n' W J& Z8 \2 C$ r+ Gsolid food. He had no hospitalizations or surgery,
/ F, x; k. F) t* K7 B# C9 s1 O3 }and his psychosocial and psychomotor development! L3 B d" h2 V- }: I
was age appropriate.: G% E% j7 j/ y. s
The family history was remarkable for the father,
9 r. W9 Y' o9 G+ _7 x z/ Vwho was diagnosed with hypothyroidism at age 16,
! X+ @: _- R; W+ O" c! Qwhich was treated with thyroxine. The father’s
. g1 e3 r; R7 k+ }+ X. S+ nheight was 6 feet, and he went through a somewhat
; |# p; C; q4 Rearly puberty and had stopped growing by age 14.
& b) X: \4 s& M! r+ O4 iThe father denied taking any other medication. The& e1 H; Z$ k& ~9 @
child’s mother was in good health. Her menarche
: B+ Y3 b, ~1 z+ \was at 11 years of age, and her height was at 5 feet
3 {* h+ _; s- J% u9 a# a# o5 inches. There was no other family history of pre-
5 x( I/ U A1 B, p9 W; T; _cocious sexual development in the first-degree rela-
2 {& f. Q8 I6 c* D5 wtives. There were no siblings.9 ]: Z) A; M' E1 v9 N: _( P7 |
Physical Examination
" U$ v. N$ o& O& Z: }. zThe physical examination revealed a very active,! ?1 K" l/ j0 q: |. Q' F2 a
playful, and healthy boy. The vital signs documented" e" m; }4 M& M6 U
a blood pressure of 85/50 mm Hg, his length was- y2 Q6 P$ q* y, y, y1 {/ v6 E9 |# q
90 cm (>97th percentile), and his weight was 14.4 kg
+ D( L) v; h7 a3 Y) X8 x" g(also >97th percentile). The observed yearly growth
. w4 q/ t" v, M0 S3 qvelocity was 30 cm (12 inches). The examination of! l# j1 T- j( z" X. S: @
the neck revealed no thyroid enlargement.
( ?9 N7 ~, T( i9 h) j' ZThe genitourinary examination was remarkable for
0 s/ u; m9 O# y* Q; x" Z8 Uenlargement of the penis, with a stretched length of; [% t6 U3 C1 L: y* B
8 cm and a width of 2 cm. The glans penis was very well9 L* b! s8 K& S- }
developed. The pubic hair was Tanner II, mostly around
" B1 R4 @2 g0 h2 {5 ?% s5 N7 y; i5401 I: G3 b) D/ C/ P+ z6 d2 M9 u
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
7 a' n9 l8 k& Lthe base of the phallus and was dark and curled. The
. N9 c# N" m( atesticular volume was prepubertal at 2 mL each.
" b6 B C7 u8 P* v6 KThe skin was moist and smooth and somewhat- |0 g! ^% ~7 j- A1 S6 m
oily. No axillary hair was noted. There were no6 M; r( s/ N5 D
abnormal skin pigmentations or café-au-lait spots.
4 }) y4 L; ~: U/ tNeurologic evaluation showed deep tendon reflex 2+
. m; ]" e2 K5 r0 q7 w1 \bilateral and symmetrical. There was no suggestion) @9 z! D' V! X! ~# Q
of papilledema.
; F. R: x( m4 f$ O0 B. C! J+ gLaboratory Evaluation
/ Y9 O" A3 a9 f( W. j5 b9 F8 lThe bone age was consistent with 28 months by9 x& @2 I& \" I6 ]- l' e
using the standard of Greulich and Pyle at a chrono-
! x& P3 @% }2 a# a0 ]7 clogic age of 16 months (advanced).5 Chromosomal( G, ~1 q i. Q, q
karyotype was 46XY. The thyroid function test4 |$ V% i( O/ I- Z- P6 W
showed a free T4 of 1.69 ng/dL, and thyroid stimu-8 ^# T7 Q, }' }3 ^- X
lating hormone level was 1.3 µIU/mL (both normal).% a% d. X2 M/ ^& V8 S4 k' J
The concentrations of serum electrolytes, blood
9 e4 x/ H$ f% @6 @- Ourea nitrogen, creatinine, and calcium all were
; R3 m7 b+ C/ \% Swithin normal range for his age. The concentration& X: B& M& A' b4 ]! |* M
of serum 17-hydroxyprogesterone was 16 ng/dL0 Z2 g4 E- T! R% Q# }: q
(normal, 3 to 90 ng/dL), androstenedione was 20' s$ t2 E1 O' q; `
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
3 ^! e: A2 l ]8 L5 p% i; hterone was 38 ng/dL (normal, 50 to 760 ng/dL),& v/ U- v% l& {0 W2 ^/ }/ u
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
, q2 q6 [( G A: H) ^49ng/dL), 11-desoxycortisol (specific compound S)" j: Z, a+ p7 f! }
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-- W$ S" {. O4 u: C! o
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total/ s! N* c7 q. h2 x2 L) O, L( }
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),7 r/ Y# L9 m) N- A: z
and β-human chorionic gonadotropin was less than
7 {( S4 ]' T p5 mIU/mL (normal <5 mIU/mL). Serum follicular
4 a q+ H/ [) W1 cstimulating hormone and leuteinizing hormone
0 w+ W/ n; j: {$ jconcentrations were less than 0.05 mIU/mL: s7 V7 a0 e$ c6 C" I
(prepubertal).
Z8 ^5 Y+ K0 C! t/ i: S0 I; ~The parents were notified about the laboratory
" |( d' y1 [( M; c; W3 m0 ]results and were informed that all of the tests were
6 \; b( I& S2 i5 Y% `$ \% `normal except the testosterone level was high. The
$ l2 f% e6 E) J- \2 gfollow-up visit was arranged within a few weeks to, ?/ Y0 L) H# H6 l% W* N
obtain testicular and abdominal sonograms; how-4 I* ]# @4 s9 {2 r6 P8 x- e
ever, the family did not return for 4 months.
2 k. p4 ~1 ^6 lPhysical examination at this time revealed that the* ?( Q$ O4 t9 @: |& T! `
child had grown 2.5 cm in 4 months and had gained) p2 ^2 l1 A; J' [$ r
2 kg of weight. Physical examination remained1 b1 ~% j+ N5 T1 G9 | n( H5 i
unchanged. Surprisingly, the pubic hair almost com-, k! r/ \, O% J8 T' C: E* C$ \
pletely disappeared except for a few vellous hairs at3 E) Z9 X/ B! k( @5 O1 S2 @9 D
the base of the phallus. Testicular volume was still 2
+ o* O) ` o7 KmL, and the size of the penis remained unchanged.
. ?; ^2 f! n& Y' ~2 Q$ wThe mother also said that the boy was no longer hav- P% O. y: \3 g+ D
ing frequent erections.
7 p/ J9 \# |4 \) c9 VBoth parents were again questioned about use of
4 ]- l$ S% b" d, U- f) I2 b9 Aany ointment/creams that they may have applied to! }2 ]9 t8 c( [) }! }; X
the child’s skin. This time the father admitted the: Y) n/ h0 m+ [6 R5 B
Topical Testosterone Exposure / Bhowmick et al 541
, ~' {- r F+ Euse of testosterone gel twice daily that he was apply-7 q* `# ~: ^: I3 X, N t1 P7 r
ing over his own shoulders, chest, and back area for6 a6 Q8 [0 N3 {' v5 e% {
a year. The father also revealed he was embarrassed
{2 M/ D8 A' d& Xto disclose that he was using a testosterone gel pre- Z0 v# n- z% v% `3 @' a
scribed by his family physician for decreased libido/ ~ ^% b& Y8 L J6 H% j
secondary to depression.) z5 f7 Y: W' C5 f
The child slept in the same bed with parents.
7 T: l8 E Y% F, bThe father would hug the baby and hold him on his4 ~: {. I. S. z' Q) i9 q4 c
chest for a considerable period of time, causing sig-
4 m+ B6 |* Q! x" h, pnificant bare skin contact between baby and father.7 y. y0 e' T# w% y
The father also admitted that after the phone call,
_& w. Q1 F& t8 uwhen he learned the testosterone level in the baby# m% G2 S- u5 K, D
was high, he then read the product information8 [& d2 e( O) g8 C+ h; U
packet and concluded that it was most likely the rea-
5 I e/ G! p3 `& P B! j! Z" Mson for the child’s virilization. At that time, they
1 I6 m: H G- W: ~6 [decided to put the baby in a separate bed, and the" [6 F C l3 p$ `7 ~2 }. [
father was not hugging him with bare skin and had
& }! A) e7 Y, qbeen using protective clothing. A repeat testosterone
6 e( E# C1 F5 b( {/ _$ X9 wtest was ordered, but the family did not go to the5 ?/ E/ G* f0 o
laboratory to obtain the test.
- Y2 A% {. y& n7 p1 t' L [) LDiscussion: k5 @8 Z: I$ S7 q% I
Precocious puberty in boys is defined as secondary
6 @9 K* n' K4 `+ o& Bsexual development before 9 years of age.1,46 M0 G: i8 h: H8 _3 R
Precocious puberty is termed as central (true) when
2 E! \( t+ ^# S t- hit is caused by the premature activation of hypo-5 Z0 M ]$ C9 q4 p+ y
thalamic pituitary gonadal axis. CPP is more com-
5 l8 U, `; S/ B0 ~mon in girls than in boys.1,3 Most boys with CPP
7 a4 r: z' e+ L- q" Qmay have a central nervous system lesion that is
. Z" Q1 F) W+ u8 y0 L4 tresponsible for the early activation of the hypothal-5 n8 w0 x1 h2 {4 g& I
amic pituitary gonadal axis.1-3 Thus, greater empha-
! r' r. T0 ~5 ^) t. Xsis has been given to neuroradiologic imaging in
% h0 G; \& k0 [4 @, \. t2 pboys with precocious puberty. In addition to viril-
L9 X9 [# E% J9 l$ y2 V0 z2 `ization, the clinical hallmark of CPP is the symmet-
+ ]6 T! o* x, j2 t* l" Wrical testicular growth secondary to stimulation by
8 v& _. Y# }6 T4 pgonadotropins.1,35 X4 X p: ]6 M6 T4 u- z
Gonadotropin-independent peripheral preco-
0 A* |* @( q. K5 P. O4 v& mcious puberty in boys also results from inappropriate
) J0 |' T. J/ M7 {, sandrogenic stimulation from either endogenous or
$ J8 Y" `; N# f. W! F1 X2 W% jexogenous sources, nonpituitary gonadotropin stim-
( V: |; Z& S! p! [- r5 r: j8 c& Bulation, and rare activating mutations.3 Virilizing7 s4 Y6 T3 K& p& s9 V0 i
congenital adrenal hyperplasia producing excessive8 Z* S0 ]/ `. N1 X) r
adrenal androgens is a common cause of precocious! j- w4 j! `$ {+ b0 t
puberty in boys.3,48 ?; C$ j1 Y& ^- A- q
The most common form of congenital adrenal2 l t- t4 P! {8 `
hyperplasia is the 21-hydroxylase enzyme deficiency.
5 F# Z) O/ {1 W: e) x' s' B: sThe 11-β hydroxylase deficiency may also result in
- y* D w4 F2 B. Oexcessive adrenal androgen production, and rarely,
' F# Q" `8 e4 H: O# m2 f: qan adrenal tumor may also cause adrenal androgen
5 k5 s2 B2 Q9 Oexcess.1,36 p4 a @& ]# a ^: z9 d3 c
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from/ q, N/ X4 p$ T5 [! }% G; ?
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
/ R1 D7 y9 \2 o, jA unique entity of male-limited gonadotropin-2 A6 x/ K" n( w2 [
independent precocious puberty, which is also known
& p' o9 V9 G& }& }- t1 |as testotoxicosis, may cause precocious puberty at a% X6 d+ l2 o) x# y% K1 p& D
very young age. The physical findings in these boys
4 e3 \1 y2 }$ V$ G6 r$ _with this disorder are full pubertal development,
7 P* r8 {" b$ \' p- X Yincluding bilateral testicular growth, similar to boys$ c! k: ]& h5 F9 i& W4 p
with CPP. The gonadotropin levels in this disorder
4 _4 e9 e; Y2 q$ e& bare suppressed to prepubertal levels and do not show
d+ I; U7 U o6 M4 Tpubertal response of gonadotropin after gonadotropin- U5 S0 q8 u/ T; ]& b/ H
releasing hormone stimulation. This is a sex-linked1 h0 A2 w! \% U& J0 i; V
autosomal dominant disorder that affects only
, G$ ?, ]2 r0 O) Ymales; therefore, other male members of the family
: x8 ~8 Z+ E& Y' F' o# n9 R* lmay have similar precocious puberty.38 j3 G- b: _: t. J
In our patient, physical examination was incon-; z. D) f! D) i) b
sistent with true precocious puberty since his testi-: k8 c4 R2 p) Z& Y+ |! X2 w( p4 k& B
cles were prepubertal in size. However, testotoxicosis
5 j Z; I* K3 i6 O3 ewas in the differential diagnosis because his father
" f. s7 C7 i$ y) [6 q8 Jstarted puberty somewhat early, and occasionally,
$ M- H$ _$ \3 G7 ^testicular enlargement is not that evident in the3 _: Y+ V3 s! u6 s7 `8 x
beginning of this process.1 In the absence of a neg-
6 I }4 k* D/ y6 c5 P' Cative initial history of androgen exposure, our
/ m6 J5 n9 c/ G$ I' b3 Q4 J* o, s: Tbiggest concern was virilizing adrenal hyperplasia,
# m$ J1 d% P' s/ Weither 21-hydroxylase deficiency or 11-β hydroxylase4 L7 `' |& a4 w
deficiency. Those diagnoses were excluded by find-& ]4 L1 B) l9 j+ m. {
ing the normal level of adrenal steroids.; Q- r3 ?! N5 A W- o3 A3 W
The diagnosis of exogenous androgens was strongly
5 f% y- h6 b1 }suspected in a follow-up visit after 4 months because9 F4 B& B& {8 z, |4 \( I
the physical examination revealed the complete disap-
! A# N1 k- |" ?! `5 _+ |6 c+ qpearance of pubic hair, normal growth velocity, and( ?" R+ e3 s$ h5 q0 p. Q+ _* e
decreased erections. The father admitted using a testos-
% X$ ?# P6 o4 q! w9 T/ q7 U, u! X" Wterone gel, which he concealed at first visit. He was3 ~9 l7 A+ a: X6 g- w0 i
using it rather frequently, twice a day. The Physicians’
- Y0 f' I+ s- F, a9 _Desk Reference, or package insert of this product, gel or
) @. a- r4 I7 f Icream, cautions about dermal testosterone transfer to
- p6 t' K! S% B: O+ a. Aunprotected females through direct skin exposure.
7 o; P3 h& D$ ^: ySerum testosterone level was found to be 2 times the, i0 U0 f E' a. a' b# R0 T
baseline value in those females who were exposed to
% c) R0 d# w, Ueven 15 minutes of direct skin contact with their male' S/ C; m S t+ B: N! ?9 n
partners.6 However, when a shirt covered the applica-& M. e1 n$ ~1 A- n
tion site, this testosterone transfer was prevented.
! B7 h/ v) C# V+ UOur patient’s testosterone level was 60 ng/mL,
2 E) r2 b. L7 z" }9 Owhich was clearly high. Some studies suggest that! ~& f& e$ @. W! X
dermal conversion of testosterone to dihydrotestos-* O; H5 D; g- d! J: U6 f2 C" R
terone, which is a more potent metabolite, is more9 U: h# D4 j1 e8 }# P4 }0 Z
active in young children exposed to testosterone: z; V. Q+ z3 O2 h( X4 ~3 Y
exogenously7; however, we did not measure a dihy-; i2 r6 C8 u( h+ F! n) ^
drotestosterone level in our patient. In addition to
8 |+ W) [& Z- Hvirilization, exposure to exogenous testosterone in
/ S6 o4 c: X y+ y) X2 z! v5 m& Pchildren results in an increase in growth velocity and
* T# k7 h- r. e' u5 b: W) B9 Cadvanced bone age, as seen in our patient.
3 m4 v5 B% ?! y. t! E1 B7 TThe long-term effect of androgen exposure during
$ }& S3 R; F% J$ k rearly childhood on pubertal development and final
1 d7 A0 u( |8 u7 @5 c0 c" @adult height are not fully known and always remain
1 S9 t4 `9 l) E) D3 i8 B; R1 Va concern. Children treated with short-term testos-
" y* J. d( T# |* J- m" Cterone injection or topical androgen may exhibit some
* I) v5 t+ x8 P0 K8 ], Pacceleration of the skeletal maturation; however, after/ {- @. t8 ^, M, l' }1 B
cessation of treatment, the rate of bone maturation
. ~8 }5 f3 t3 }. _/ B6 m2 z( L+ wdecelerates and gradually returns to normal.8,95 E7 \, g: }; U% @# X
There are conflicting reports and controversy }! g% o" e% {3 {. `3 L6 O; E4 F, t
over the effect of early androgen exposure on adult7 `! k* Z$ m+ ?9 X( h; P
penile length.10,11 Some reports suggest subnormal
n2 d( S3 C! s5 Fadult penile length, apparently because of downreg-. ?7 l# q$ d y# \8 C/ n, V2 E) S
ulation of androgen receptor number.10,12 However,& d/ Q; j! G p/ X" }! [: s$ p
Sutherland et al13 did not find a correlation between
2 X4 n5 w; _- }) Uchildhood testosterone exposure and reduced adult+ {0 {! m- C) s- h
penile length in clinical studies.
3 C0 v4 e0 s, vNonetheless, we do not believe our patient is
( A$ {4 H& A0 `0 L! X0 A6 i: w# ggoing to experience any of the untoward effects from& q/ \" u r+ n& B4 S* _4 r- [
testosterone exposure as mentioned earlier because6 ~: g( y/ ~* ^# w) V
the exposure was not for a prolonged period of time.
4 P* X; r5 k, WAlthough the bone age was advanced at the time of
; b+ M5 m! U; C0 P1 ^diagnosis, the child had a normal growth velocity at$ D- [. I$ ^2 K$ s
the follow-up visit. It is hoped that his final adult3 r1 _* \/ O8 X; e3 W' N
height will not be affected.. p& R4 e \5 {3 r
Although rarely reported, the widespread avail-
; h i5 R- ?' r A/ vability of androgen products in our society may
! `6 N( P6 z! }9 Jindeed cause more virilization in male or female
5 D6 P* p8 T f5 d9 Rchildren than one would realize. Exposure to andro-$ c F; Q' G$ y3 S- m9 m
gen products must be considered and specific ques-
0 u. d: D( f8 \; @+ m# [tioning about the use of a testosterone product or
7 X: H+ Y9 C+ y/ mgel should be asked of the family members during7 x6 ?9 Z+ I8 \2 {5 m8 t) e: A( H
the evaluation of any children who present with vir-5 h Z2 H/ E5 k% n ?- T; n4 Z3 U5 x
ilization or peripheral precocious puberty. The diag-
3 p1 ]' h( |5 M) p' d3 d% bnosis can be established by just a few tests and by: o* D: p# E/ k9 D5 T/ o
appropriate history. The inability to obtain such a" |/ C) y3 o/ x1 D
history, or failure to ask the specific questions, may6 k* P1 }$ F+ V( @. w# |
result in extensive, unnecessary, and expensive
' F& T7 D) G( i% Zinvestigation. The primary care physician should be
: A4 D9 o5 A7 j! F4 g( ?5 R# n* N0 Paware of this fact, because most of these children
& Z2 q# @5 L8 g* O. i0 ]: L6 ~may initially present in their practice. The Physicians’4 L z) |) p6 d. I0 \- ?
Desk Reference and package insert should also put a2 c+ u: d# k, X X
warning about the virilizing effect on a male or
- g9 V* o6 X* V+ }" m- ?% mfemale child who might come in contact with some-( z6 R6 q5 e9 B
one using any of these products.
1 _% t5 I- Q" QReferences
0 n5 z& W+ H$ V" _1 X& b1. Styne DM. The testes: disorder of sexual differentiation$ e- B0 @# J' c7 r* X9 K s4 J
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Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;: x* w6 P9 ]& m& `! p6 C2 a# ~* p7 r
2002: 565-628.
* o3 O5 S" N/ k% {7 c7 T+ V2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
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3 V5 v5 F6 b" t* |4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
* L8 y% V9 n4 wdevelopment in a two-year-old boy induced by topical9 l+ ~: r/ m# m. e
exposure to testosterone. Pediatrics. 1999;104:e23.
8 R. J& E, }8 E0 _& n6 b) w5. Greulich WW, Pyle SI, eds. Radiographic Atlas of5 E7 g. L+ z8 q' S
Skeletal Development of the Hand and Wrist. 2nd ed.
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7 L% p% [6 p# Z/ _5 P6. Physicians’ Desk Reference. Androgel 1% testosterone,# l$ ~% i* V* q4 z( b1 x
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
; |+ n& b" D$ x9 x: M p3 o; O" JEconomics Company, Inc; 2004:3239-3241.7 ]$ ~: V0 W" @+ a) A
7. Klugo RC, Cerny JC. Response of micropenis to topical
" Z3 C1 A' E0 E& [testosterone and gonadotropin. J Urol. 1978;119:
5 w2 K4 x& T. g( K' R, }# S5 D667-668.; \. {! R' S8 x3 w2 J
8. Guthrie RD, Smith DW, Graham CB. Testosterone, K' I! ^" z1 R/ c
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