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is a significant concern for physicians. Central0 L& p6 A' I% m" X
precocious puberty (CPP), which is mediated
/ l3 {3 M9 {. O. ^through the hypothalamic pituitary gonadal axis, has
% y+ T+ |4 R, ra higher incidence of organic central nervous system
% ~& s. x( g# ]) n& M' b* Z7 Klesions in boys.1,2 Virilization in boys, as manifested
8 M+ S1 a: ~& j( v; Z7 r! K7 _9 L+ }by enlargement of the penis, development of pubic' z( f4 N5 i) h
hair, and facial acne without enlargement of testi-
$ i& D9 W5 I, _& V9 _& ncles, suggests peripheral or pseudopuberty.1-3 We
/ I, g/ |8 S" S$ ]; U; t1 nreport a 16-month-old boy who presented with the, G: `+ A( o& J
enlargement of the phallus and pubic hair develop-% v" X5 e8 K( R. B# ]' g; N
ment without testicular enlargement, which was due3 L6 b, N% q4 h( m% S K7 V
to the unintentional exposure to androgen gel used by
, Y! A* Q. J8 ^3 h* k, L! Nthe father. The family initially concealed this infor-' O3 d- u6 K% |
mation, resulting in an extensive work-up for this
( `4 N4 u1 C/ Y' c) j: Q+ K3 Q! vchild. Given the widespread and easy availability of# t# ~" a9 ~& [1 K3 C& Z O. G; h
testosterone gel and cream, we believe this is proba-
, e! ]4 @! u9 Y Z; Dbly more common than the rare case report in the- ^7 Z+ J5 `6 ` W
literature.4+ J5 H) ?# \+ \2 J) [
Patient Report. ^7 ]* w. A1 E* Z
A 16-month-old white child was referred to the5 | j' p5 g! N' Q+ M" Q* n
endocrine clinic by his pediatrician with the concern0 g2 }. |2 ^. Y$ p* I8 W. f# y" M6 e
of early sexual development. His mother noticed0 `2 ] W% m* q7 f& m6 Q8 G4 e
light colored pubic hair development when he was1 B1 b) F: |% x, @9 { S% F+ d
From the 1Division of Pediatric Endocrinology, 2University of
) C. z" m* F) P: l8 v' v0 qSouth Alabama Medical Center, Mobile, Alabama.. u7 J' `; Q, p3 P+ |
Address correspondence to: Samar K. Bhowmick, MD, FACE,
& T* E- m2 t% {4 P, ^Professor of Pediatrics, University of South Alabama, College of
% L0 u# i0 @% J3 aMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
y; ^6 @: J: ~: |. v2 d- Te-mail: [email protected].' L1 V) M* ]* k/ @' o
about 6 to 7 months old, which progressively became
2 V3 \# ~& e: mdarker. She was also concerned about the enlarge-
) s+ j$ A A1 j9 Wment of his penis and frequent erections. The child
+ @2 p/ m8 d) [3 l1 L( T+ Hwas the product of a full-term normal delivery, with6 P# g- {7 T& C3 x# i: b! C
a birth weight of 7 lb 14 oz, and birth length of t, e% i* z3 O! D" W8 ^, B& j
20 inches. He was breast-fed throughout the first year
( n( Q, ], T2 @( Yof life and was still receiving breast milk along with
) ^9 ~+ V! q" N' I: `# f( G! bsolid food. He had no hospitalizations or surgery,
. G% l/ _( B4 G! v* @6 mand his psychosocial and psychomotor development* K2 F P! I; P+ D! m
was age appropriate.
: [1 J5 i: A" {) rThe family history was remarkable for the father,
5 S6 N; T7 r! x( [2 s, j; P$ ewho was diagnosed with hypothyroidism at age 16,
/ Z0 e6 v# Z# H1 M# ^which was treated with thyroxine. The father’s
- U% R! m2 F, Gheight was 6 feet, and he went through a somewhat
8 N) _1 d) I$ X5 ~ O, D. [early puberty and had stopped growing by age 14.0 z8 Z" v/ u5 P; _ o- M* u
The father denied taking any other medication. The
8 w2 |. w* ~" e( h8 rchild’s mother was in good health. Her menarche; v5 U9 ]$ M$ n7 ^3 p5 Y
was at 11 years of age, and her height was at 5 feet7 Y' o3 Y; }. e$ Y- N$ t8 E
5 inches. There was no other family history of pre-
2 z0 N! s$ V [# E* y4 ococious sexual development in the first-degree rela-8 {+ Y0 N X+ \
tives. There were no siblings.
8 ` X; m3 A( H: L; ]/ o5 ^& S5 ]Physical Examination
8 u( U2 T& f$ \The physical examination revealed a very active,
1 }, w2 r' S. ]6 xplayful, and healthy boy. The vital signs documented
, p: K7 u# G v6 \+ p* e6 l+ Ja blood pressure of 85/50 mm Hg, his length was+ T3 x7 U* r' r5 C
90 cm (>97th percentile), and his weight was 14.4 kg2 I, F# [. d$ z/ [
(also >97th percentile). The observed yearly growth8 ]* s0 Y& H+ J; G/ h1 V" F% i
velocity was 30 cm (12 inches). The examination of
' Q/ G C- p5 H2 b* P* ?the neck revealed no thyroid enlargement.- x% j. `. i$ u0 B9 u
The genitourinary examination was remarkable for
u! O) h" d f: Lenlargement of the penis, with a stretched length of- \* |' a0 p( I
8 cm and a width of 2 cm. The glans penis was very well
5 K/ Q2 ^. K6 y: u) J& q4 p# }developed. The pubic hair was Tanner II, mostly around
v% p8 F4 f& s8 K3 t5401 d/ u. l) \; ]" T: ?) q
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from% N0 q. @: C6 S/ o
the base of the phallus and was dark and curled. The
- K3 `7 m( e/ A! Q7 ~3 N7 @9 ltesticular volume was prepubertal at 2 mL each.4 D& u* A& R V% N! M1 `/ w6 y
The skin was moist and smooth and somewhat' W# n) |* w4 e3 {9 k
oily. No axillary hair was noted. There were no( s5 c ^& H5 G# u2 E6 Z* |, { k4 q; h
abnormal skin pigmentations or café-au-lait spots.
0 ?! z, m' c! D7 m' QNeurologic evaluation showed deep tendon reflex 2+
1 `. T5 e/ q' o; K& v( a sbilateral and symmetrical. There was no suggestion
4 C% B- H: L a/ Hof papilledema.& m) b9 B" e6 X6 b9 G$ Z2 T
Laboratory Evaluation
: |1 \' v* Q' Y) ]6 a: F4 W& f0 A( rThe bone age was consistent with 28 months by
9 Q( [" r' I& w* ^using the standard of Greulich and Pyle at a chrono-3 X$ u2 J' r1 D) M. T" N8 V
logic age of 16 months (advanced).5 Chromosomal- i* `; x* x5 |" W3 @8 z; C4 m
karyotype was 46XY. The thyroid function test
$ K. b( }* z9 k+ [+ E4 jshowed a free T4 of 1.69 ng/dL, and thyroid stimu-( Z, J. Q: ?1 _8 f( J8 k: u
lating hormone level was 1.3 µIU/mL (both normal).
' j9 B* v) A! h% l4 o( {The concentrations of serum electrolytes, blood" a: I; D; Z( r7 f: r
urea nitrogen, creatinine, and calcium all were
8 n$ Q1 a9 u( ~7 g9 \! s* \9 H" Z3 Xwithin normal range for his age. The concentration
8 c2 m/ K2 c; O( ?' I4 bof serum 17-hydroxyprogesterone was 16 ng/dL+ v; Z4 | B* h7 H
(normal, 3 to 90 ng/dL), androstenedione was 20. h. ]2 U/ y$ `+ b& p1 T( `8 b
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
4 }" D) L' q# jterone was 38 ng/dL (normal, 50 to 760 ng/dL),. f4 e6 [5 K7 B0 u( M/ Z2 G# X
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
' |, J% `0 ]. U( P0 K49ng/dL), 11-desoxycortisol (specific compound S)
4 K8 K4 c- L; |' `. h" K) G- [7 kwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
! U8 E2 Y4 U _. w: O& [! c6 Itisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
+ L. [$ n+ m, j2 b$ e3 ]. I% |* ztestosterone was 60 ng/dL (normal <3 to 10 ng/dL),% w3 B5 n V4 o. t$ R
and β-human chorionic gonadotropin was less than0 R6 M+ x. `: B
5 mIU/mL (normal <5 mIU/mL). Serum follicular
# N' U: `$ Y$ g6 Lstimulating hormone and leuteinizing hormone9 `; z; Q3 g! C6 v7 |1 k4 H+ A8 N
concentrations were less than 0.05 mIU/mL
$ n$ w6 s; x/ g0 M" p4 l E(prepubertal).
: _% p+ M- I; Z- V" ~1 pThe parents were notified about the laboratory8 X5 y" M- U9 [/ U4 e! z' _0 h+ e
results and were informed that all of the tests were% G2 d9 d2 z2 @7 o& X) W9 n
normal except the testosterone level was high. The+ R/ H6 y( P9 @' K
follow-up visit was arranged within a few weeks to+ f3 ~6 s5 M! Z- x1 q2 u7 b
obtain testicular and abdominal sonograms; how-
* R ?, g8 U* r1 bever, the family did not return for 4 months.
( K; B2 `# ?$ v) }Physical examination at this time revealed that the
0 ^+ j, D. ~5 wchild had grown 2.5 cm in 4 months and had gained% ?8 T8 E; x. w
2 kg of weight. Physical examination remained; E; w/ ^7 V7 d0 I: K% p- _
unchanged. Surprisingly, the pubic hair almost com-
7 V8 h$ W- f/ h# k, n2 N& R2 Npletely disappeared except for a few vellous hairs at
. g. A- {$ R- ]) p6 B' Fthe base of the phallus. Testicular volume was still 2
9 K# @+ X2 C/ x% ?mL, and the size of the penis remained unchanged.( L0 A) W) x% o1 Y
The mother also said that the boy was no longer hav-* W3 V3 K4 `7 H" S9 k# Z& L
ing frequent erections.' s! }9 _! c+ Y+ P4 L
Both parents were again questioned about use of
, ~$ A! I0 Q( e' R( }: q, pany ointment/creams that they may have applied to
& M9 X, I) |$ ]. qthe child’s skin. This time the father admitted the
+ t. y+ {8 c8 m9 ATopical Testosterone Exposure / Bhowmick et al 541, R9 S( O4 R" {$ _
use of testosterone gel twice daily that he was apply-; `; c4 i, V9 L
ing over his own shoulders, chest, and back area for
. S8 Z' k+ [: R; s; ~0 va year. The father also revealed he was embarrassed. x7 j0 D9 ~; ~& z8 ~* P
to disclose that he was using a testosterone gel pre-3 e' H- p# V* }. ?5 n# ^
scribed by his family physician for decreased libido L3 D1 j3 M) q* i5 E* l) X
secondary to depression.# J3 b2 [1 ]1 a: b
The child slept in the same bed with parents., G' `9 B# w! J
The father would hug the baby and hold him on his1 J9 D* g" Y q7 c3 A2 g4 u/ z
chest for a considerable period of time, causing sig-: {2 k' f( R- i( i% u4 X; d
nificant bare skin contact between baby and father.
+ E3 Y' Z1 h0 U/ M5 c' u+ VThe father also admitted that after the phone call,1 v4 I- f8 X" V2 W
when he learned the testosterone level in the baby9 B7 B' v$ x! M9 ?% [$ k1 \
was high, he then read the product information
# d1 n, x+ ~: L+ t: I/ b0 U& h$ {packet and concluded that it was most likely the rea-
@: I& A" S6 I! E& [" D' W! q4 P* hson for the child’s virilization. At that time, they
" X7 T& }) q7 l6 Y; xdecided to put the baby in a separate bed, and the
1 F4 l ?7 k3 i& N, ]; k/ L5 w5 Q( Ufather was not hugging him with bare skin and had& X2 r! x3 P% z: }! i' U0 _
been using protective clothing. A repeat testosterone
7 f; N1 K0 t% F% Atest was ordered, but the family did not go to the
' U6 j' c2 \- m) q* M* Y% D* alaboratory to obtain the test.+ m5 R% K% d$ V+ b- {
Discussion% R+ w) d5 a- K$ J' @ C
Precocious puberty in boys is defined as secondary
, o; v; g# T. Vsexual development before 9 years of age.1,49 u$ K: I }1 @+ v. i) m c
Precocious puberty is termed as central (true) when+ G1 y4 g; H. w& j! m
it is caused by the premature activation of hypo-' @! G) ?' \3 h; U
thalamic pituitary gonadal axis. CPP is more com-8 [6 m% x$ `+ u; @( \
mon in girls than in boys.1,3 Most boys with CPP! {! B. R; v, {4 j
may have a central nervous system lesion that is
0 C- f' j; o' u- [7 e( z- S( W3 o+ {! i& Iresponsible for the early activation of the hypothal-
9 O( G3 D* P( @5 p9 p3 C+ d: `: ?& ~amic pituitary gonadal axis.1-3 Thus, greater empha-0 T& D" o, S7 q& {3 P) I
sis has been given to neuroradiologic imaging in. I# L8 P! f# Q& k" j7 {" V8 w+ E
boys with precocious puberty. In addition to viril-
! s% P$ Z: I! O! s$ [" kization, the clinical hallmark of CPP is the symmet-9 k' u3 o- g% L
rical testicular growth secondary to stimulation by- v; z5 k- d+ e2 i+ }* K# `
gonadotropins.1,3* P; a* h* I7 x! k1 p/ A! M
Gonadotropin-independent peripheral preco-
4 E& ?4 y) }; [1 F) W: }cious puberty in boys also results from inappropriate
! N" I \9 _: T: k5 Oandrogenic stimulation from either endogenous or/ B/ ^9 ~' b0 r& `7 Y' c* b
exogenous sources, nonpituitary gonadotropin stim-+ R$ R. ~; j4 \2 h) \- ~7 \
ulation, and rare activating mutations.3 Virilizing
; `; Y' f a# W+ e6 ]9 {2 V" icongenital adrenal hyperplasia producing excessive
, W7 U* s3 A$ U3 [% C# Uadrenal androgens is a common cause of precocious
. }6 x/ ~: {* a$ j! ]puberty in boys.3,4# n+ ?6 E" p" l7 }# c' h
The most common form of congenital adrenal
. M: l2 b5 b. E# Z& |6 h z( Jhyperplasia is the 21-hydroxylase enzyme deficiency.+ E9 y+ W( W) a6 I
The 11-β hydroxylase deficiency may also result in
/ l3 J% h, g L) x w9 s0 k. M1 eexcessive adrenal androgen production, and rarely,
- a" ]6 a+ I; S1 M5 _3 Wan adrenal tumor may also cause adrenal androgen
) D$ I [! j8 \& M3 x1 m" ^# m' [excess.1,3
0 G6 O. q* `2 @$ d- u: x% M- kat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from2 |3 r2 e; ~8 V4 _
542 Clinical Pediatrics / Vol. 46, No. 6, July 20075 v. w, S6 W5 P; `
A unique entity of male-limited gonadotropin-
( m6 q$ [0 v- `' S( _independent precocious puberty, which is also known6 |' E! R `8 Q: d- _
as testotoxicosis, may cause precocious puberty at a, D- P) ]2 d, i# _
very young age. The physical findings in these boys! g+ j5 V/ y3 q& w6 r. _5 R
with this disorder are full pubertal development,* ]' Z/ F4 Q% d! h! n
including bilateral testicular growth, similar to boys
5 Q. t0 H4 E# F; c; |0 U& Twith CPP. The gonadotropin levels in this disorder4 `: F5 k/ K; l* O% N1 p2 \1 K
are suppressed to prepubertal levels and do not show) }& H7 s: T0 }
pubertal response of gonadotropin after gonadotropin-
/ u2 O+ R9 q0 {; i+ D) C. sreleasing hormone stimulation. This is a sex-linked
$ j! u) R2 Y+ w. J0 @+ Tautosomal dominant disorder that affects only
2 a7 ]7 ]1 r& p" B6 E: N0 pmales; therefore, other male members of the family8 E5 l+ ]$ b5 ]) j( `3 D3 z" d
may have similar precocious puberty.3
9 D4 a, @& V. B3 |$ D0 [3 z5 W' bIn our patient, physical examination was incon-
, T1 ^5 _5 e& B" s( B. Y: }sistent with true precocious puberty since his testi-
8 K% W( _$ X/ N1 q% X6 C# K9 R7 M) icles were prepubertal in size. However, testotoxicosis
/ e' z' y$ I+ K' R& ~$ Pwas in the differential diagnosis because his father, ?& [8 f+ Z- h
started puberty somewhat early, and occasionally,
& e0 B! f, R& Z F& g; Ttesticular enlargement is not that evident in the! F8 d; D7 _- L& {9 _5 [! i$ O
beginning of this process.1 In the absence of a neg-
' h" ?2 I9 Y) [: B) o; m$ r6 |ative initial history of androgen exposure, our. Y; j2 r4 p" R9 i$ p
biggest concern was virilizing adrenal hyperplasia,
* f) t: p' S2 z$ }0 K& qeither 21-hydroxylase deficiency or 11-β hydroxylase
( o- R2 F% o: V8 V2 T* }: f1 u+ tdeficiency. Those diagnoses were excluded by find-8 k& a/ C4 V! ]& A$ K- m7 x$ A) B+ o1 @
ing the normal level of adrenal steroids.
0 m- W0 a! e$ k0 ?The diagnosis of exogenous androgens was strongly
0 r6 Z( _( n O( N9 m$ f" W' ^suspected in a follow-up visit after 4 months because
" G) B$ `( h$ v8 A0 X7 n6 Kthe physical examination revealed the complete disap-
9 v- p% G3 W# X) i* k0 lpearance of pubic hair, normal growth velocity, and
+ O T' R$ m; O" X( S7 N7 `& kdecreased erections. The father admitted using a testos-
' q( q+ J, Q9 `) sterone gel, which he concealed at first visit. He was
" P. Q/ l2 A/ C5 J7 Lusing it rather frequently, twice a day. The Physicians’
6 ~3 j$ U1 P) L* S$ sDesk Reference, or package insert of this product, gel or' G" J, h$ x6 Z# Z& ^5 m
cream, cautions about dermal testosterone transfer to
3 x2 o/ m& h4 q0 {unprotected females through direct skin exposure.9 t% _% ~) j" R' o( k% [5 _* A
Serum testosterone level was found to be 2 times the' u0 t4 C E5 h- w
baseline value in those females who were exposed to# b! T; j4 e$ T' [& h, o( u
even 15 minutes of direct skin contact with their male
5 O0 ?5 }5 h6 M- _partners.6 However, when a shirt covered the applica-
: \' N% A1 K7 o3 U& gtion site, this testosterone transfer was prevented./ W4 N8 E7 x# H
Our patient’s testosterone level was 60 ng/mL,
% y- S' ^/ f/ N; [9 P+ p% v- owhich was clearly high. Some studies suggest that: k3 T& G, d6 j) e
dermal conversion of testosterone to dihydrotestos-! d/ ?& x8 ^0 T. G$ r6 e3 o! U6 }( p
terone, which is a more potent metabolite, is more' l2 ?% _# \. y7 U- L) H9 M( J
active in young children exposed to testosterone
3 U0 o1 }6 M7 S( Zexogenously7; however, we did not measure a dihy-5 K3 t* S, S5 A" I- _
drotestosterone level in our patient. In addition to
" R/ m0 D3 X. u" v- Hvirilization, exposure to exogenous testosterone in
% }% U' e, r ?children results in an increase in growth velocity and
3 O4 _* X7 n+ M$ Badvanced bone age, as seen in our patient.
+ f( v! }% r; U/ w0 ^The long-term effect of androgen exposure during
" f y3 d t" k9 ~, o- A) y$ aearly childhood on pubertal development and final
6 p1 T1 i6 E, N2 g: ]0 Padult height are not fully known and always remain
$ J5 e+ f: G7 f: Ba concern. Children treated with short-term testos-9 R4 d6 t% s' \# S& G+ b" t
terone injection or topical androgen may exhibit some
& s6 ?# U% O/ i+ r3 `8 A0 Y# M8 Facceleration of the skeletal maturation; however, after
9 R/ `0 w. j% K# U7 vcessation of treatment, the rate of bone maturation
A$ h$ n) I% l0 Jdecelerates and gradually returns to normal.8,9
8 W# u" d) q( G2 c. u& ^- q$ S! t" J: BThere are conflicting reports and controversy9 Q8 |$ J: ~0 O2 {5 D
over the effect of early androgen exposure on adult' |: O- E; v; t9 p
penile length.10,11 Some reports suggest subnormal
: |/ P+ Q! K# m7 }, M0 K9 z8 madult penile length, apparently because of downreg-& @/ d* A6 _# ?' f' s4 X6 j. x0 l
ulation of androgen receptor number.10,12 However,
4 t; {* ^+ u3 s* H8 n! E. eSutherland et al13 did not find a correlation between
# @) U u0 ?' u) B# qchildhood testosterone exposure and reduced adult/ v7 o. D8 E# L2 p' E6 b
penile length in clinical studies.$ E; T* F1 b% u# H5 m
Nonetheless, we do not believe our patient is* a* @4 A+ h! A# Z
going to experience any of the untoward effects from0 I; f/ E0 j. {2 B# N/ X* p$ U3 [1 e
testosterone exposure as mentioned earlier because2 ]0 z; |; ^' L! R# S
the exposure was not for a prolonged period of time./ I5 U7 P/ V4 D: J4 p+ G
Although the bone age was advanced at the time of
# ~1 ^9 Z: I* k, m" Pdiagnosis, the child had a normal growth velocity at9 q3 Q4 u1 F) S# T1 O9 m& U
the follow-up visit. It is hoped that his final adult
: d+ z# v* F$ R% Q1 U! Oheight will not be affected.5 ]. a' ]7 r9 @6 w
Although rarely reported, the widespread avail-* Z" s' w- a$ k3 {& d( G
ability of androgen products in our society may) P* o9 S( {: U Z+ r& c/ B" [+ K
indeed cause more virilization in male or female0 H |9 ]& r0 E6 L* I) s3 c; B Z
children than one would realize. Exposure to andro-0 x) m3 F3 B5 e4 C1 L! Y
gen products must be considered and specific ques-
# V0 A0 t) ]$ i0 D- Mtioning about the use of a testosterone product or. s: k- x. V6 Z# F% {; @
gel should be asked of the family members during: ^# }& v; I) j, ] j- N6 q
the evaluation of any children who present with vir-
@4 E( S; `# j4 {) Silization or peripheral precocious puberty. The diag-- l! _$ O2 I O& V6 ~0 t/ |# ?# R
nosis can be established by just a few tests and by
) v; k3 d$ K6 nappropriate history. The inability to obtain such a
' G1 ?3 j3 U) f1 B0 D8 a- @history, or failure to ask the specific questions, may
+ e8 @" }* M0 @& c3 [; Vresult in extensive, unnecessary, and expensive
% L: D, L2 l" j3 w5 Rinvestigation. The primary care physician should be$ q! q* B7 C2 _: u
aware of this fact, because most of these children
- ?' ?. K: b" m+ o" M' T3 B. n' t$ gmay initially present in their practice. The Physicians’
! a) e9 ~2 b! rDesk Reference and package insert should also put a! a, N: k1 E( ]
warning about the virilizing effect on a male or. L, ?+ M& [- Q6 D" T3 R3 F0 A
female child who might come in contact with some-
) Z( `/ ~0 Z6 Q; L- vone using any of these products.
8 a: w& N2 v# H) L, K' I' p3 lReferences
$ P+ g; a% ~$ n3 K! {7 Y5 E1. Styne DM. The testes: disorder of sexual differentiation; a6 b, S. H2 y6 q9 @* B
and puberty in the male. In: Sperling MA, ed. Pediatric
$ x5 B2 R! j) f3 R# V8 }Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
7 ]4 H \- d1 ^; L2002: 565-628.5 \9 g. o. T9 T* }
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
' {$ k& i+ a7 b: r/ Cpuberty in children with tumours of the suprasellar pineal
Z7 S9 H' J4 Hat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from: c0 O8 ]4 g& S: T
Topical Testosterone Exposure / Bhowmick et al 5433 D9 S" i+ k( I) ]6 N/ a/ V
areas: organic central precocious puberty. Acta Paediatr.
U4 h2 c. u S1 R. [2001;90:751-756.3 u/ G5 w3 Q% i4 G8 u
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
$ V2 m% V. K; D( x- u3 c# @* cPediatric Endocrinology. 4th ed. New York, NY: Marcel
0 H6 S6 J1 p3 L* z# z# U8 |Dekker Inc; 2003:211-238.
+ Q( \* Y$ _, ~/ \+ l Z0 M% o4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual: q: C: B% v. f$ h9 p* R5 q
development in a two-year-old boy induced by topical9 l# R' k7 j" E
exposure to testosterone. Pediatrics. 1999;104:e23.
! V; s3 @0 k6 S+ [" }/ [5. Greulich WW, Pyle SI, eds. Radiographic Atlas of( ~; Z0 K* K, m6 P- ?6 p* ^/ Q: k
Skeletal Development of the Hand and Wrist. 2nd ed.
O* x" @; h6 o) tStanford, CA: Stanford University Press; 1959.9 p D3 Z7 i. C8 h& z
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