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is a significant concern for physicians. Central
; f$ c6 \+ k' p2 _ K# h$ rprecocious puberty (CPP), which is mediated8 i/ q. S. z8 t# S- p
through the hypothalamic pituitary gonadal axis, has
* `( Z4 u4 h2 T' `a higher incidence of organic central nervous system: w$ ?4 @' l) D9 }" N# M. D5 t5 _' r
lesions in boys.1,2 Virilization in boys, as manifested/ M) X. e0 \+ |, \$ l' \6 Y6 n+ w7 V
by enlargement of the penis, development of pubic
) Z3 f+ X9 L" B: [8 T+ Xhair, and facial acne without enlargement of testi-6 B ^% A- q1 x0 Z
cles, suggests peripheral or pseudopuberty.1-3 We
1 N. n1 s" L+ r) Q+ Hreport a 16-month-old boy who presented with the
$ D4 Q" D( b3 c! N6 P* D( Q$ A" renlargement of the phallus and pubic hair develop-/ |3 A& e# v0 ^6 Y, I# K3 G
ment without testicular enlargement, which was due. H9 J/ \1 G! T: t' O# L
to the unintentional exposure to androgen gel used by3 `- q- D! l* W
the father. The family initially concealed this infor-
( i: D6 J/ ]2 \mation, resulting in an extensive work-up for this
- K$ g8 t0 m4 e- @4 w( J; z9 achild. Given the widespread and easy availability of
# D. U( m% c. v' p& R; Etestosterone gel and cream, we believe this is proba-" P; ?* U9 L" A, A
bly more common than the rare case report in the, ~7 k! o5 C5 B6 s
literature.40 v4 B6 m$ ?" |( a
Patient Report
! K2 e7 z7 Y: k- f/ v* n& `& EA 16-month-old white child was referred to the
; [, k3 S, J- o7 I& oendocrine clinic by his pediatrician with the concern
- F9 s' x x5 {% hof early sexual development. His mother noticed& ~0 F5 m: I' [; ~
light colored pubic hair development when he was
: ]0 m- `- Q8 g) e7 s4 z3 ZFrom the 1Division of Pediatric Endocrinology, 2University of4 C2 k4 x) q- i# D S
South Alabama Medical Center, Mobile, Alabama.& D. \. g! b0 q. A3 G
Address correspondence to: Samar K. Bhowmick, MD, FACE,6 R/ n9 K$ @1 h2 b. @( M' Y
Professor of Pediatrics, University of South Alabama, College of& c* h5 f& w6 z0 x X
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
0 `8 ?* ~1 Y7 |0 |e-mail: [email protected].
" ^" J3 w' a) g! H- |5 rabout 6 to 7 months old, which progressively became
+ T. ], x3 \ o( |) Z$ ~4 J/ s% _darker. She was also concerned about the enlarge-
# I, F6 o6 N1 R/ v. K3 } U, ament of his penis and frequent erections. The child
5 d( |/ V( e+ vwas the product of a full-term normal delivery, with
9 w( n, [4 Y5 o- j) Ka birth weight of 7 lb 14 oz, and birth length of
* i: u3 d) P/ K+ w5 Z20 inches. He was breast-fed throughout the first year& Q7 l# l+ h) d) B/ w
of life and was still receiving breast milk along with
5 q4 Q+ _4 y& I+ ~solid food. He had no hospitalizations or surgery,: i9 M i( g& t6 {% @
and his psychosocial and psychomotor development3 c7 d; i" _6 s
was age appropriate.
* J* \! p# N! ?& U0 ]# PThe family history was remarkable for the father,
% n/ K1 z! [% @- T; a3 Twho was diagnosed with hypothyroidism at age 16,5 H8 g/ n- Q7 O6 R2 w. I
which was treated with thyroxine. The father’s
. z# R) v" P# ?) V! ^height was 6 feet, and he went through a somewhat
- |6 F8 K; e( T o' r: W+ o( Xearly puberty and had stopped growing by age 14.* E+ z$ q1 s* k9 e$ ]. s! z4 p0 P% J7 {
The father denied taking any other medication. The5 p9 L8 n7 ]! f& q" i# F& t; G+ o U1 s
child’s mother was in good health. Her menarche3 Y. T9 o2 b8 ?! ]$ ^( D/ H
was at 11 years of age, and her height was at 5 feet& u4 e Q/ n9 _
5 inches. There was no other family history of pre-
4 o, [9 l- n: v% ococious sexual development in the first-degree rela-
- F5 F2 n9 t2 Q5 O+ ~8 E1 Qtives. There were no siblings. M: z! V# z/ N$ s/ Q( h
Physical Examination% B8 u: G2 Z8 q6 j0 o/ W; g/ I0 t# C( T
The physical examination revealed a very active,/ u: h& y& h3 C
playful, and healthy boy. The vital signs documented% B1 s, }! {, N
a blood pressure of 85/50 mm Hg, his length was
0 S0 C x4 q5 a# a, X90 cm (>97th percentile), and his weight was 14.4 kg, x6 I) l4 [, k! f
(also >97th percentile). The observed yearly growth
' D, y3 R2 W, B* O% Yvelocity was 30 cm (12 inches). The examination of
& N ?8 j4 l. |- t7 M8 N$ wthe neck revealed no thyroid enlargement.
, L' e$ X7 b: |* wThe genitourinary examination was remarkable for" _7 }& A7 G8 J0 P% u$ a# B
enlargement of the penis, with a stretched length of
6 y8 ?" u+ u7 y' i6 l$ F8 cm and a width of 2 cm. The glans penis was very well
& y# b2 g; ^1 Z; h% K. [" {4 \developed. The pubic hair was Tanner II, mostly around) i) y' x4 C! i
540
% H! m* b% {6 L% o7 X: |7 }at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
+ y7 I; N* K* f/ _- F7 _the base of the phallus and was dark and curled. The
# j" b6 N1 F! L1 xtesticular volume was prepubertal at 2 mL each.# m) Y( s" L8 W' |5 a+ s
The skin was moist and smooth and somewhat( o& n8 Z( c# ~- L. n
oily. No axillary hair was noted. There were no
1 O7 b5 G+ O9 x; t5 S/ ~/ Iabnormal skin pigmentations or café-au-lait spots.
& A* A0 c3 ~( Z: MNeurologic evaluation showed deep tendon reflex 2+
9 Y* h2 e2 e: L- z) @" O8 U0 w4 ubilateral and symmetrical. There was no suggestion
, r6 r9 N6 |+ U% s" fof papilledema.% x, G$ l0 L2 c. m0 P* K4 }3 ~ D
Laboratory Evaluation+ F/ }$ x5 D9 c0 I& [$ z7 m
The bone age was consistent with 28 months by
( i' b- z- s. @1 N: x* Xusing the standard of Greulich and Pyle at a chrono-
( D9 y; ] a) rlogic age of 16 months (advanced).5 Chromosomal
6 ~! [& x0 f& vkaryotype was 46XY. The thyroid function test7 a& u& X/ P* z8 ^3 R7 }$ O7 _
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
# t( d! T8 _! d; p) }) P5 rlating hormone level was 1.3 µIU/mL (both normal).
8 q3 L- ^& b) M# [The concentrations of serum electrolytes, blood4 B% D8 N% y$ M% F
urea nitrogen, creatinine, and calcium all were
. j' |( c: U1 \ x( s# \/ {# q+ qwithin normal range for his age. The concentration
* _& ^ Y! q' q* fof serum 17-hydroxyprogesterone was 16 ng/dL
( w* B* @5 t( w! N/ E- {(normal, 3 to 90 ng/dL), androstenedione was 20
, [7 t. [) Z. I1 _3 b1 dng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-5 K; b' n& ^ a* S ^
terone was 38 ng/dL (normal, 50 to 760 ng/dL),2 v: y5 N* a' m& @( I0 c$ M
desoxycorticosterone was 4.3 ng/dL (normal, 7 to/ p7 a G ]; y2 O/ u
49ng/dL), 11-desoxycortisol (specific compound S)
1 D$ y9 l5 a3 w% Z# D7 V) h. J! Jwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-0 ]/ [0 I e; p
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
; E/ D2 J; u, Qtestosterone was 60 ng/dL (normal <3 to 10 ng/dL),
h; k# _7 V+ Wand β-human chorionic gonadotropin was less than g1 Z( T7 `6 w9 \" R
5 mIU/mL (normal <5 mIU/mL). Serum follicular' `4 ^$ i/ s) m# f) z
stimulating hormone and leuteinizing hormone! g- k/ k O1 s* P) O
concentrations were less than 0.05 mIU/mL9 Z! {8 H4 w" w# b- A* t0 @
(prepubertal).
6 ]. c/ B" P3 |The parents were notified about the laboratory
4 w' g1 m# l: U J: F; s9 aresults and were informed that all of the tests were
3 Q. V: }( z/ x3 |& f* A4 N# K- pnormal except the testosterone level was high. The' b6 @( p# i- A
follow-up visit was arranged within a few weeks to
5 O, t3 i1 {3 R9 h6 C8 L- Bobtain testicular and abdominal sonograms; how-
1 b- V, C! a6 xever, the family did not return for 4 months.
3 J% j: B4 F7 ^8 ~ o/ Z3 M- j+ M$ yPhysical examination at this time revealed that the
; ]" k- [1 K K1 S& i% H0 E, vchild had grown 2.5 cm in 4 months and had gained1 p, D$ T8 t( f
2 kg of weight. Physical examination remained# R7 v, q/ y) \( N( A1 ?+ H7 b! l
unchanged. Surprisingly, the pubic hair almost com-- G. y3 l) r3 b- _
pletely disappeared except for a few vellous hairs at
! ^6 V6 i& G3 c( M& t+ N+ ethe base of the phallus. Testicular volume was still 2. Z" p2 x! s; i$ C
mL, and the size of the penis remained unchanged.
, r* n0 ^& f$ j' qThe mother also said that the boy was no longer hav-% o5 X+ [8 F! y7 s7 ?' E
ing frequent erections.6 M: S% K! [* {- i% ]4 |+ {
Both parents were again questioned about use of' {# B" D: c8 z7 q( T2 Z3 C) u
any ointment/creams that they may have applied to
) {/ I. U/ \7 Q# v" @the child’s skin. This time the father admitted the0 K8 \: d+ b% C+ M; E0 m) c
Topical Testosterone Exposure / Bhowmick et al 541
5 ~9 {' ]/ ]1 |* I0 [; t2 B2 ~9 z; @* _use of testosterone gel twice daily that he was apply-0 ?, H+ _7 z: I: c
ing over his own shoulders, chest, and back area for
- s* u& |0 U. V; H& j) o; Ua year. The father also revealed he was embarrassed
* c/ G7 q4 h& \# H5 S3 X9 p3 Z+ k" Rto disclose that he was using a testosterone gel pre-# M" Q3 y4 u! w4 }
scribed by his family physician for decreased libido
h7 s4 I- f1 Y xsecondary to depression.
& s" e2 W) i+ hThe child slept in the same bed with parents.
: m6 b( N. r5 I: h& vThe father would hug the baby and hold him on his
4 ~* M x( O6 f! K, gchest for a considerable period of time, causing sig-
o+ d V- u8 P) hnificant bare skin contact between baby and father.
8 q+ |! R, [# TThe father also admitted that after the phone call,
( u) h) Z) e3 i2 a* c* ^5 Z: E. Lwhen he learned the testosterone level in the baby
; n5 |, Z W8 }was high, he then read the product information( d, `1 ]# p2 q2 Z6 r
packet and concluded that it was most likely the rea-$ r5 {: M7 T, w
son for the child’s virilization. At that time, they9 m/ H' w1 R; y0 k5 d4 v6 E1 Y5 P, T
decided to put the baby in a separate bed, and the k& [, B( C2 v& N
father was not hugging him with bare skin and had
2 F S& E' F, N! w. J3 h) C$ ^0 ^: L; obeen using protective clothing. A repeat testosterone
' A( t3 b5 q" @0 R7 T8 B+ n/ Rtest was ordered, but the family did not go to the) n6 k$ q0 x2 u8 P" A: x; k" }5 w
laboratory to obtain the test.% ], z# c+ }6 K
Discussion
9 d$ }2 l3 k' O# T/ @- zPrecocious puberty in boys is defined as secondary( ^, V, W! N2 C9 E6 b$ s8 P5 [
sexual development before 9 years of age.1,4
6 a% A0 P7 _' ?, q* D! [Precocious puberty is termed as central (true) when
3 q4 `% N. d5 j$ ^: i! u, Mit is caused by the premature activation of hypo-9 O( t+ [- V, n( D
thalamic pituitary gonadal axis. CPP is more com-
- d _$ D4 c' V% b9 B2 o% {mon in girls than in boys.1,3 Most boys with CPP0 ?3 h4 k; o1 p" {, i! U
may have a central nervous system lesion that is
, [6 I+ T8 x: r* F! u0 Y* t+ ^responsible for the early activation of the hypothal-
9 R, B* c" d; N' L! ~) L3 {% ?amic pituitary gonadal axis.1-3 Thus, greater empha-/ o2 q5 n, a l3 U
sis has been given to neuroradiologic imaging in
! [' ~, q- o! Z/ e% E& yboys with precocious puberty. In addition to viril-8 Z9 V$ d- k1 T0 T2 z
ization, the clinical hallmark of CPP is the symmet-
6 x; C% R* P# Lrical testicular growth secondary to stimulation by
4 o. i; f9 z% p8 @, P0 Jgonadotropins.1,3
; d/ \% n/ G& s- F1 EGonadotropin-independent peripheral preco-3 A7 W2 A. V# I9 o$ h
cious puberty in boys also results from inappropriate
; E# |2 {5 h. R9 D2 l7 \! Tandrogenic stimulation from either endogenous or3 l1 _+ X7 W2 }& g8 ]$ V
exogenous sources, nonpituitary gonadotropin stim-" i' K. i8 ?. T/ s+ K/ y
ulation, and rare activating mutations.3 Virilizing% X4 K" h E% u9 P F
congenital adrenal hyperplasia producing excessive
" c6 V2 s0 x! Y, U/ radrenal androgens is a common cause of precocious
/ T/ [0 F0 ]# m0 M I: F8 \' V0 Rpuberty in boys.3,4; W& M& k v' D2 i
The most common form of congenital adrenal! P1 ?7 R0 K6 S
hyperplasia is the 21-hydroxylase enzyme deficiency.
, f4 E* k+ l( N3 D! QThe 11-β hydroxylase deficiency may also result in# T2 G1 u. B# K6 x
excessive adrenal androgen production, and rarely,
# g( v# w) Q2 \, pan adrenal tumor may also cause adrenal androgen( {) a: b. B# ^1 a# l/ w
excess.1,3
- D' h4 q' ?- u# ]8 uat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from0 L+ u& k4 g: J
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
! C) A" W9 Y" B( D2 L3 IA unique entity of male-limited gonadotropin- O- z* a' g. w% D' G
independent precocious puberty, which is also known
: j/ B' s! N7 G. q9 C* Las testotoxicosis, may cause precocious puberty at a
2 L c% u8 Z! g9 X- y2 fvery young age. The physical findings in these boys6 K6 m4 L; U6 t. N% i0 J4 T
with this disorder are full pubertal development,
2 F$ j" g' ^) U; Oincluding bilateral testicular growth, similar to boys( D g+ L+ S8 P; n2 L r
with CPP. The gonadotropin levels in this disorder2 U7 I! ~* U$ `/ g, z7 P; F
are suppressed to prepubertal levels and do not show4 S. C" |5 K2 ~+ ~2 P
pubertal response of gonadotropin after gonadotropin-2 c: |9 R' m6 k4 p+ D' W1 j- Q/ [
releasing hormone stimulation. This is a sex-linked
, l8 M9 [7 ]' t% _$ h h! Fautosomal dominant disorder that affects only1 s: a3 O7 i$ p4 j/ k# t
males; therefore, other male members of the family
8 ?6 {8 L# H1 w3 {: ~6 Smay have similar precocious puberty.3
- @3 q# M( O( Y* y9 y" \: tIn our patient, physical examination was incon-
* E. f9 J, v# h$ K9 a" ~sistent with true precocious puberty since his testi-
: m4 ?8 V* U, l' Bcles were prepubertal in size. However, testotoxicosis
' p. k2 y( U0 f& S$ qwas in the differential diagnosis because his father/ A; J: n& v3 c" n' |# s
started puberty somewhat early, and occasionally,
7 k+ K" p- y; M# |testicular enlargement is not that evident in the
+ L6 |* C1 q/ |, _; wbeginning of this process.1 In the absence of a neg-
4 @# U$ O3 F2 v3 B7 Vative initial history of androgen exposure, our
! [# A" q2 E4 r: E; o* R( V3 Gbiggest concern was virilizing adrenal hyperplasia,
$ ~/ v& W. ~0 u0 [- y) Xeither 21-hydroxylase deficiency or 11-β hydroxylase
" J7 J. |: a4 M" x& x/ jdeficiency. Those diagnoses were excluded by find-- K' Z1 q" Z( C- m
ing the normal level of adrenal steroids.
+ f9 ?6 s' V; MThe diagnosis of exogenous androgens was strongly
1 {: D0 g @* a1 t* Asuspected in a follow-up visit after 4 months because+ Z' F' ~( N$ c* L4 T
the physical examination revealed the complete disap-# R- e; z5 d' o4 `. I
pearance of pubic hair, normal growth velocity, and, o4 m1 U1 T8 l" u; V
decreased erections. The father admitted using a testos-$ Y, t+ f H; a
terone gel, which he concealed at first visit. He was
3 A t2 @1 g! _9 C" H eusing it rather frequently, twice a day. The Physicians’
* F0 K* n: t4 R, R$ D5 J5 _- ]4 WDesk Reference, or package insert of this product, gel or
# x2 F/ ?- J; I7 A/ S& c/ Rcream, cautions about dermal testosterone transfer to. a5 \% Z3 K/ O' @0 }
unprotected females through direct skin exposure.4 R& a# M+ r( H3 q! @3 _7 X& f' c
Serum testosterone level was found to be 2 times the6 U/ c7 {+ d) H
baseline value in those females who were exposed to
* c5 ?9 p; h, {" L5 s, D. qeven 15 minutes of direct skin contact with their male, H# w7 T& a4 S: u4 ^1 U6 j, w8 \' f7 C
partners.6 However, when a shirt covered the applica-$ R& p% C, e C, G8 j
tion site, this testosterone transfer was prevented.
* B y, @% W N" I7 I) QOur patient’s testosterone level was 60 ng/mL,: K. x( s) I8 b; K& X0 Z! [
which was clearly high. Some studies suggest that+ o- B; g: v9 V8 W5 D8 g$ W# n
dermal conversion of testosterone to dihydrotestos-, `' p, U! |2 F, c
terone, which is a more potent metabolite, is more& E' y! K* \, q3 b% `
active in young children exposed to testosterone' [4 I- v. a& |8 V
exogenously7; however, we did not measure a dihy-6 r, k9 r8 W7 w$ Z! \) m
drotestosterone level in our patient. In addition to) q" j8 |1 a! E4 H! Z
virilization, exposure to exogenous testosterone in$ |3 v% O8 y" P; f. Y; a `
children results in an increase in growth velocity and6 Z/ y! j6 g" L4 |) R J- Z
advanced bone age, as seen in our patient.8 x2 o) u8 w( U2 S
The long-term effect of androgen exposure during% M. h$ |2 t' X8 R% h
early childhood on pubertal development and final
' E) W) @8 n7 z+ O- Y6 \& sadult height are not fully known and always remain
. u, o) L) l3 }& ^6 |- ?9 u- oa concern. Children treated with short-term testos-
) {. M( R7 z6 Y6 Cterone injection or topical androgen may exhibit some: s4 y! p. K* E) J
acceleration of the skeletal maturation; however, after' u, m8 a6 y8 w) F0 a8 h) t( g
cessation of treatment, the rate of bone maturation* M! I* j9 {6 }5 [7 S
decelerates and gradually returns to normal.8,9
; p# a3 \1 c0 V5 ~/ HThere are conflicting reports and controversy3 L' D$ s3 W$ \$ v; M9 m
over the effect of early androgen exposure on adult
6 T9 e) f, _5 ]! Rpenile length.10,11 Some reports suggest subnormal9 v4 Y4 Y2 }8 L% l5 [
adult penile length, apparently because of downreg-
# |# k& |6 i( R4 C# v0 [ulation of androgen receptor number.10,12 However,
c9 w/ y' c, A. W9 J" tSutherland et al13 did not find a correlation between
2 F6 @" n8 s7 i% V. }/ A5 _childhood testosterone exposure and reduced adult. N" `! q( ^/ m' u/ s. D
penile length in clinical studies.
3 }6 T4 p2 {8 N7 VNonetheless, we do not believe our patient is
( V% H: C! N: J$ r" Vgoing to experience any of the untoward effects from* Z7 _: T9 z8 p0 s' Z9 T' z/ r' j
testosterone exposure as mentioned earlier because8 x/ |" z/ j6 I; B0 E' t5 C+ _0 z
the exposure was not for a prolonged period of time.
' Z8 p' Z& }- F9 ]' z0 oAlthough the bone age was advanced at the time of
- g5 `9 r% s7 qdiagnosis, the child had a normal growth velocity at& y" y" h. Q _' z( j* Y7 X O& d
the follow-up visit. It is hoped that his final adult/ H$ P- J! \, O+ a8 H
height will not be affected.
5 H; S. m4 e9 R, |! w5 GAlthough rarely reported, the widespread avail- q" U* C# H1 s1 z0 B! x
ability of androgen products in our society may
# |) d6 }+ H; p; Windeed cause more virilization in male or female
! V9 D# @- d; ?3 r3 X, achildren than one would realize. Exposure to andro-7 P! E: L0 L/ Z- ?* `) {2 L. E) E/ g& i
gen products must be considered and specific ques-! @; C* g5 J7 S; w+ g
tioning about the use of a testosterone product or
+ I) l! M3 V2 X h! U Sgel should be asked of the family members during8 X( f0 F) E* ]' m0 `" S8 i$ ^. W
the evaluation of any children who present with vir-
# A& I8 ?1 F3 @/ ]ilization or peripheral precocious puberty. The diag-8 H" \* G7 s# J' J, [8 A
nosis can be established by just a few tests and by
7 O* `4 C9 Y/ `9 g# z' z6 Bappropriate history. The inability to obtain such a0 d+ F; y) [* v& [
history, or failure to ask the specific questions, may; ?* r2 ]0 D" `; S* i
result in extensive, unnecessary, and expensive) Z; @! M2 Z9 ?5 d5 r
investigation. The primary care physician should be
% h1 o3 _: _9 T3 `- w4 ?aware of this fact, because most of these children' r8 u+ U: V1 m+ Q- D1 G
may initially present in their practice. The Physicians’& @) |4 b! t5 w8 C, u t
Desk Reference and package insert should also put a8 t9 r' B# U, Z6 C" a/ ]
warning about the virilizing effect on a male or
4 O y: z- L9 }0 j, jfemale child who might come in contact with some-
+ T. n& u" w: none using any of these products.
6 x# a( \0 Y+ ^- J& d XReferences. u+ J: E) h( ^9 r; ?
1. Styne DM. The testes: disorder of sexual differentiation
; e% g; L9 V2 W; R1 m% F; q! o4 Mand puberty in the male. In: Sperling MA, ed. Pediatric
G Q! {0 l# ^ K4 tEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
' e% v5 w+ x! V$ b/ A& ]4 w' H2002: 565-628.' V( q) a9 p- L. K
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious( c( A3 T' Y4 V0 E% z$ x/ ]
puberty in children with tumours of the suprasellar pineal% v5 p2 x$ e u8 O
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areas: organic central precocious puberty. Acta Paediatr.
+ R0 x, C3 {- Z s* T2001;90:751-756.
0 ] i0 ]+ m- k' I. w6 }0 `3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed./ `& e, ]; |7 N$ _1 {
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
8 P% U2 G3 c' q0 h8 VDekker Inc; 2003:211-238.
% u8 N! l, t) w; m4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
# H; V1 o7 p# q) m. @4 Bdevelopment in a two-year-old boy induced by topical1 j5 G; Y$ s" g# r6 N/ |! F" M9 U
exposure to testosterone. Pediatrics. 1999;104:e23.
+ ]; h& G0 r0 S5. Greulich WW, Pyle SI, eds. Radiographic Atlas of3 q" ~9 w l p
Skeletal Development of the Hand and Wrist. 2nd ed.. [( x3 m7 u' b6 |
Stanford, CA: Stanford University Press; 1959.
6 R5 C8 w- m q( F; s+ a# Y, ]6. Physicians’ Desk Reference. Androgel 1% testosterone,
/ W- a! _) _8 G8 t# ~Unimed Pharmaceutical Inc. Montvale, NJ: Medical
3 [, S/ n( d7 c4 P3 FEconomics Company, Inc; 2004:3239-3241./ o) w3 r( e, k% Q7 e4 S
7. Klugo RC, Cerny JC. Response of micropenis to topical) N% G( u3 D: i$ o. s" C/ H# k! m
testosterone and gonadotropin. J Urol. 1978;119:
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