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is a significant concern for physicians. Central3 S2 W1 R' f! l0 [& S, z
precocious puberty (CPP), which is mediated/ Z1 z- ?# o; j3 Q
through the hypothalamic pituitary gonadal axis, has
- ~4 |1 ` ?# j3 Ja higher incidence of organic central nervous system B' n8 |, b- k' T) U
lesions in boys.1,2 Virilization in boys, as manifested
1 V, U7 u/ n2 z9 P1 ]9 Zby enlargement of the penis, development of pubic
9 n8 h' Q) _2 c) `5 m8 T3 f9 Ehair, and facial acne without enlargement of testi-$ p2 R/ J4 k3 s6 N6 U& ]4 r
cles, suggests peripheral or pseudopuberty.1-3 We
4 n Q. o* W. ]0 H6 \report a 16-month-old boy who presented with the( t# x& a* Z5 K6 |2 O
enlargement of the phallus and pubic hair develop-1 B9 E0 D$ E+ W4 \4 Q: i
ment without testicular enlargement, which was due6 F, b3 i8 {0 K
to the unintentional exposure to androgen gel used by! Y( z- i( W6 Y* j8 V$ Y
the father. The family initially concealed this infor-4 [7 C/ ]5 B7 ~! s" O
mation, resulting in an extensive work-up for this, z/ Z' C/ S2 g- G" W* k u3 I
child. Given the widespread and easy availability of7 Z {3 A3 S$ U6 a+ |1 L
testosterone gel and cream, we believe this is proba-
- T; M- p8 k! F* U9 y2 d, x0 M+ Fbly more common than the rare case report in the6 C, Q) l# |4 J/ I7 R& b
literature.4
n7 S2 m" x2 _8 t0 j. g6 D4 OPatient Report4 q5 k4 `& @$ S
A 16-month-old white child was referred to the! S6 x( ^3 a2 u2 N0 h
endocrine clinic by his pediatrician with the concern+ x$ h- K& o$ B: Q: {7 V$ f
of early sexual development. His mother noticed# F5 |- r- E- U F6 [8 ]
light colored pubic hair development when he was
' ~3 J0 e) d5 l9 A& K" d$ A' ?From the 1Division of Pediatric Endocrinology, 2University of% k7 ]9 G9 t7 `& @
South Alabama Medical Center, Mobile, Alabama.
, x9 Y% {% `, G9 r$ X( HAddress correspondence to: Samar K. Bhowmick, MD, FACE,$ @) m* X @0 O) u8 _1 [& B; x/ S
Professor of Pediatrics, University of South Alabama, College of
! ?1 @; A) v* Q$ N8 G5 MMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
& y. R& K) b- M$ y+ P9 ~ ve-mail: [email protected].
" x' j6 B: b- I& ^about 6 to 7 months old, which progressively became/ z, Y2 G6 p* V+ F% F
darker. She was also concerned about the enlarge-
- I* d" z+ J4 S2 @5 x: L5 y8 oment of his penis and frequent erections. The child6 f& M) i( J' @" U. A
was the product of a full-term normal delivery, with
6 w7 U0 _1 U1 @" Z y7 p7 V0 Z+ za birth weight of 7 lb 14 oz, and birth length of
) J+ G# w( ~: L2 O5 ?20 inches. He was breast-fed throughout the first year( S+ t! ]: w1 C# l, y5 {9 W# h+ i
of life and was still receiving breast milk along with% a) a P, d; C1 E4 n8 z$ Z
solid food. He had no hospitalizations or surgery,
" u% L7 j# F/ mand his psychosocial and psychomotor development
d6 f: @' u5 e* {$ Q. ]was age appropriate.2 F2 g1 k0 O7 K+ z9 U) v
The family history was remarkable for the father,
! \* P' U: c! I2 I4 P) ]who was diagnosed with hypothyroidism at age 16," x* f4 m4 G3 b" c. x, l
which was treated with thyroxine. The father’s
8 A0 j0 C$ w7 Q0 Dheight was 6 feet, and he went through a somewhat
z1 W7 N$ N+ H( p$ A7 ?" e& Fearly puberty and had stopped growing by age 14.
% S0 f7 F$ f8 J# W/ c9 HThe father denied taking any other medication. The
; e& j, A8 ^7 o# m) h4 l- E% Fchild’s mother was in good health. Her menarche
c. R. \9 P- l( \2 n# }was at 11 years of age, and her height was at 5 feet
4 {; c$ F/ k- ^" U; Z; g/ u5 inches. There was no other family history of pre-
4 `/ N+ F3 k- kcocious sexual development in the first-degree rela-
! p0 C, P1 \/ o" |- T! M4 Utives. There were no siblings.
9 ]! G* U- X! ?+ j, H; c+ ^Physical Examination
" _# V! N( R( Z7 Z3 @( t0 d3 g* h9 jThe physical examination revealed a very active,, O" g, C" W9 ~7 `6 V
playful, and healthy boy. The vital signs documented
8 p) u" D! k- l* }a blood pressure of 85/50 mm Hg, his length was
4 c+ U& X: X" a. {4 c$ U1 p90 cm (>97th percentile), and his weight was 14.4 kg
! ^, v( `7 F, H! M+ h(also >97th percentile). The observed yearly growth
% y+ \8 t0 E+ n, Nvelocity was 30 cm (12 inches). The examination of7 l+ l N5 v( E* r' I% g& n) t, ]
the neck revealed no thyroid enlargement.
1 h; U. B( o7 @' n' z0 vThe genitourinary examination was remarkable for- N' ~/ B: l8 y: N0 Z8 r
enlargement of the penis, with a stretched length of
. O$ p& m, e1 h. `7 K1 C8 cm and a width of 2 cm. The glans penis was very well& G8 y6 d7 e5 Z
developed. The pubic hair was Tanner II, mostly around9 q/ v+ ]' K3 I2 l
540, S$ ~( g8 i6 V
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from/ k0 a+ e. j; N# K7 r
the base of the phallus and was dark and curled. The6 f; T5 J Y. F; S2 W) B" U1 H& M/ H
testicular volume was prepubertal at 2 mL each.$ u6 f+ |8 m4 ]9 n: d
The skin was moist and smooth and somewhat
3 B+ a, O) U( d* A2 G6 h9 H/ U* ~: t8 Ioily. No axillary hair was noted. There were no! z3 D" o" K, r9 B# m3 i1 M$ n5 T
abnormal skin pigmentations or café-au-lait spots.- u# ^* d, d/ o& B1 v
Neurologic evaluation showed deep tendon reflex 2+. l! I9 g! ]- `- L$ o5 G3 U
bilateral and symmetrical. There was no suggestion
# ~/ f7 M3 D2 E9 C2 G, X$ Q- V( lof papilledema.7 |6 k% Y, m+ z' p
Laboratory Evaluation
7 ]& s( f# z- gThe bone age was consistent with 28 months by* y4 z4 X& Y+ V9 u) u
using the standard of Greulich and Pyle at a chrono-
1 m: I1 w$ h( m. F5 `( z4 wlogic age of 16 months (advanced).5 Chromosomal
; U: [) S3 ]9 R9 X3 V3 X: lkaryotype was 46XY. The thyroid function test- ]% L9 ]! f' b7 S# F! a
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
2 d1 K4 E. h n2 E+ {lating hormone level was 1.3 µIU/mL (both normal).) W" Z$ ]' l, q+ Y9 O& t
The concentrations of serum electrolytes, blood5 ^5 n) {) ?: t- E4 R( [: S$ }" P
urea nitrogen, creatinine, and calcium all were
* ^0 c* x( o2 Xwithin normal range for his age. The concentration
2 i! q6 N, F8 H+ S# S( _0 Yof serum 17-hydroxyprogesterone was 16 ng/dL
0 D, r" `: q# [3 V(normal, 3 to 90 ng/dL), androstenedione was 20
8 {) K0 U9 O$ C6 |, {2 Gng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
* m8 J4 U2 K4 F& W: ]) Tterone was 38 ng/dL (normal, 50 to 760 ng/dL),4 ^9 Q! ]/ P" ^& ~ X# {( \, R$ S
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
2 P' b1 i; V4 k- _8 j4 _49ng/dL), 11-desoxycortisol (specific compound S)/ b$ Y& v7 z/ f$ H. R
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
% i2 b, N9 J: f) K8 ^: y5 [4 itisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total+ X% ^# Z7 o% q# x2 v. }" m
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),9 Y/ x _, a2 Y" N
and β-human chorionic gonadotropin was less than
6 E8 ~3 \" P. k5 }9 \7 U5 t5 mIU/mL (normal <5 mIU/mL). Serum follicular [+ a, g ~6 ~- k
stimulating hormone and leuteinizing hormone
( B V5 p K4 I3 Q! o. Z- o3 zconcentrations were less than 0.05 mIU/mL
U) t' ^# @3 o* @(prepubertal).$ m5 v9 i/ Z! {8 ~* G5 m% Z
The parents were notified about the laboratory k# Z! p8 m# J2 M7 J' j0 C
results and were informed that all of the tests were
: l, d. J6 D9 y" L! snormal except the testosterone level was high. The
: Q+ c' L0 r* V5 U0 r2 jfollow-up visit was arranged within a few weeks to
) Q+ \# h: j$ M4 \3 S7 O1 s7 gobtain testicular and abdominal sonograms; how-
5 N8 C: E$ A& K6 |ever, the family did not return for 4 months.4 Q( f- M2 Z3 ]5 i) N7 I
Physical examination at this time revealed that the
' t! |6 b& A* C7 |. f5 @child had grown 2.5 cm in 4 months and had gained; I6 C+ Y/ a" g! u+ T0 k$ ~: e
2 kg of weight. Physical examination remained
, W7 M4 E; B6 E9 qunchanged. Surprisingly, the pubic hair almost com-
w8 T' _" [* p& _. Ipletely disappeared except for a few vellous hairs at/ J: i; E6 i+ l; [6 [( c1 o8 \
the base of the phallus. Testicular volume was still 20 f( C+ D" ?8 H* R( b
mL, and the size of the penis remained unchanged.
1 O- P+ c$ r' p; F. |9 s, RThe mother also said that the boy was no longer hav-
+ K: x/ }. i% O- G6 L, n0 d5 R& king frequent erections.
2 z1 i- B! F/ w# Q. s* ^, ~Both parents were again questioned about use of
4 ^/ a1 c* {; T7 z: g# xany ointment/creams that they may have applied to
+ ?6 x1 W% M( J+ ^4 k+ _: h9 Bthe child’s skin. This time the father admitted the
0 W7 U, k9 ~7 i# d% N6 T4 `( jTopical Testosterone Exposure / Bhowmick et al 541
4 G1 j) L; C- K. B- uuse of testosterone gel twice daily that he was apply-4 A6 _( v; |$ I6 W( N, C
ing over his own shoulders, chest, and back area for
* b, M0 M4 e: V" F$ @3 W! L- oa year. The father also revealed he was embarrassed7 W& c8 h' w1 g
to disclose that he was using a testosterone gel pre-. D; @* U$ u6 H" t* J/ G' P
scribed by his family physician for decreased libido
3 N' V& B c) ~7 q$ O8 osecondary to depression.
5 T) i+ [/ Q | j; u; PThe child slept in the same bed with parents.
7 a/ a3 c! F/ Y1 @The father would hug the baby and hold him on his
+ B5 W1 C* I! T* Uchest for a considerable period of time, causing sig-! ^7 Y( b8 `1 |3 f# z3 } _$ Q
nificant bare skin contact between baby and father.
0 r; b# n& ] l& K) u) jThe father also admitted that after the phone call,. a" @ T) \ w7 u
when he learned the testosterone level in the baby0 |/ Y# S: K* G1 y% E1 Y
was high, he then read the product information, K& X! n6 N3 d- e+ N
packet and concluded that it was most likely the rea-4 ?# N) r2 J2 O2 W! s, Q5 d
son for the child’s virilization. At that time, they1 L; v A9 C# c3 C4 b3 r$ g
decided to put the baby in a separate bed, and the
" \5 `5 d1 `) i$ X3 W2 E0 rfather was not hugging him with bare skin and had
* l: y8 N( ^2 j* F. P* o' E& }been using protective clothing. A repeat testosterone% L' t9 H; t. Y' [! l
test was ordered, but the family did not go to the0 a$ _+ F- J$ x/ M* ]3 E+ Z' l" G
laboratory to obtain the test.
# n. Y) |0 ~8 \) ^# xDiscussion
& |% f6 z2 b2 m+ L; X* n, H$ V# {Precocious puberty in boys is defined as secondary
! S# j* G) M. C/ X5 n9 b3 Gsexual development before 9 years of age.1,4
# a( j% D S% u5 u- bPrecocious puberty is termed as central (true) when1 h% y, I/ ~2 A" l/ Z4 d/ c' [' r
it is caused by the premature activation of hypo-% u* `. G, D% I" s- c9 O. Y. k
thalamic pituitary gonadal axis. CPP is more com-. I* x) S3 B6 q a5 P) x% _
mon in girls than in boys.1,3 Most boys with CPP0 Z- ` o4 d4 e. ?; _4 \1 F% o
may have a central nervous system lesion that is' J3 M6 H3 w- E) T% X! Q
responsible for the early activation of the hypothal-: R) B% C. B, Y
amic pituitary gonadal axis.1-3 Thus, greater empha-
# e6 l( j/ ^4 Z7 ?sis has been given to neuroradiologic imaging in* v" p/ v7 |* l! h
boys with precocious puberty. In addition to viril-
1 v# r- S2 R: Nization, the clinical hallmark of CPP is the symmet-
' L; i. _5 C8 L& A3 J# E" c9 yrical testicular growth secondary to stimulation by
) t9 I/ j, b2 Z' ~9 Q% {gonadotropins.1,33 g: D3 v* u2 f/ j# x
Gonadotropin-independent peripheral preco-
+ L$ q X& K, H9 i5 a2 G( zcious puberty in boys also results from inappropriate
& O4 [. c) G) ]9 V: Q5 `androgenic stimulation from either endogenous or
& v( b0 k9 v% D' C( @& e/ u' n0 }exogenous sources, nonpituitary gonadotropin stim-
5 ~) [' {/ {' Y5 i- @4 T/ _ulation, and rare activating mutations.3 Virilizing
' e) G* h) p, N" n) a; M5 `congenital adrenal hyperplasia producing excessive
5 s+ B8 H" K2 b1 dadrenal androgens is a common cause of precocious6 e* L1 R, R+ a) s5 \: |
puberty in boys.3,4
" a4 V$ a, A* |8 CThe most common form of congenital adrenal2 E, j' _9 H6 @6 D! l5 ]
hyperplasia is the 21-hydroxylase enzyme deficiency.
5 ?4 m# _5 L9 {( j3 o) a; yThe 11-β hydroxylase deficiency may also result in
: F2 W/ f0 x, X. r' e9 \& pexcessive adrenal androgen production, and rarely,- f$ Y% U( L( F$ d
an adrenal tumor may also cause adrenal androgen
- ^3 D0 P; ^* i. ]6 w: |0 aexcess.1,3
: K# F8 Q, w1 E4 O! T, D; uat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from) V: |' ?$ k' g
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
/ k3 t- A$ I" W' x- q4 _' [A unique entity of male-limited gonadotropin-1 H" R+ l% b# E* Z
independent precocious puberty, which is also known
- c& V' L6 t/ |! k) F3 Bas testotoxicosis, may cause precocious puberty at a/ z4 {' C) @, J
very young age. The physical findings in these boys
8 I* Y$ y$ L J9 ?% ~" P; pwith this disorder are full pubertal development,
1 r1 }+ B8 u( {* n' c& ]including bilateral testicular growth, similar to boys! O5 b7 t# F( W$ {
with CPP. The gonadotropin levels in this disorder. K7 v2 \# Y/ p0 Z, ]; I7 i4 h+ o4 n8 K
are suppressed to prepubertal levels and do not show
2 W( Z6 J9 v" _. v! B# S" Q: Upubertal response of gonadotropin after gonadotropin-
6 p4 N! b4 j+ `9 Dreleasing hormone stimulation. This is a sex-linked
8 r# E& `3 R5 H# Xautosomal dominant disorder that affects only# w' l/ s$ Y, p- i6 o. y
males; therefore, other male members of the family
7 z2 d5 F$ r0 Kmay have similar precocious puberty.3
# Y6 @* q7 Z/ xIn our patient, physical examination was incon-
* E: b# A; q3 c7 ]) Y* Hsistent with true precocious puberty since his testi-
# i% O9 `* W/ n% _' t+ V# A, S' z4 Bcles were prepubertal in size. However, testotoxicosis
7 c& @% M6 z* o } Mwas in the differential diagnosis because his father
3 M7 x9 X- x! E' N& @2 }9 ]& pstarted puberty somewhat early, and occasionally,% b* k1 @! ?( n) H! X
testicular enlargement is not that evident in the
' c2 B7 l! Y* R* qbeginning of this process.1 In the absence of a neg-
' v; x/ P2 s' \! Q b% Z7 Native initial history of androgen exposure, our
5 D0 c; d' j# ^) t: Y& tbiggest concern was virilizing adrenal hyperplasia,9 m$ g0 a: k& v9 R
either 21-hydroxylase deficiency or 11-β hydroxylase( M5 ~$ ~0 d3 f: p: w; f7 J
deficiency. Those diagnoses were excluded by find-
* q% T# q5 G: _6 Cing the normal level of adrenal steroids.
* P B7 S+ U( j+ bThe diagnosis of exogenous androgens was strongly! E7 h% A2 U* \( Z9 E+ W
suspected in a follow-up visit after 4 months because
+ e8 V2 r# W& i6 Sthe physical examination revealed the complete disap-
9 K( }% k, A) S5 c9 dpearance of pubic hair, normal growth velocity, and( f( d- @5 J/ y& K
decreased erections. The father admitted using a testos-
: G+ T/ g" V8 M! I* Mterone gel, which he concealed at first visit. He was
) x7 |3 j% z5 h7 f3 Tusing it rather frequently, twice a day. The Physicians’$ [8 D4 v2 I# J4 w$ ]9 a
Desk Reference, or package insert of this product, gel or1 o; j# `7 F2 o8 v; t
cream, cautions about dermal testosterone transfer to% e' i. {* `4 d% u9 I
unprotected females through direct skin exposure.
$ Z7 N9 j. o; RSerum testosterone level was found to be 2 times the
; I% J8 ^! b* E( k1 d2 s& |" Cbaseline value in those females who were exposed to
5 Q' J: w F3 q! A& D- Q. Yeven 15 minutes of direct skin contact with their male
% J1 p/ F" P1 m7 u# Y. f. i" C6 kpartners.6 However, when a shirt covered the applica-
6 ^+ f% O1 G0 U: U5 F @tion site, this testosterone transfer was prevented. B/ M/ W6 u/ j, h! f( N0 j( t' i
Our patient’s testosterone level was 60 ng/mL, t: x. ~) g5 K" h4 f* t5 |
which was clearly high. Some studies suggest that0 `$ z! J0 j' d$ N q5 o f
dermal conversion of testosterone to dihydrotestos-
% g0 r4 Q9 y0 Nterone, which is a more potent metabolite, is more
2 Z& m: l1 {! f' xactive in young children exposed to testosterone
. Z* u5 c% e3 Q$ r+ D. f) v3 ~0 Cexogenously7; however, we did not measure a dihy-2 U9 E, @8 F# O8 t/ N, d
drotestosterone level in our patient. In addition to
) ^+ m. g5 z1 t2 Kvirilization, exposure to exogenous testosterone in( T& r- [, y C
children results in an increase in growth velocity and
! d. ^+ }! G a8 Z Y9 m2 b" s# v' badvanced bone age, as seen in our patient.9 ~& v5 ]9 N6 K* q
The long-term effect of androgen exposure during
/ d5 @0 k7 @- e uearly childhood on pubertal development and final8 o5 q( w, b' Z8 [) y+ K8 ?
adult height are not fully known and always remain0 R- ?- e: ~6 ~$ |4 h3 d
a concern. Children treated with short-term testos-
8 H' Q+ ^0 }* d& z2 d! e( U: }( F$ Wterone injection or topical androgen may exhibit some
- L/ ]( K" e- l6 {acceleration of the skeletal maturation; however, after
0 z, B7 N5 E! dcessation of treatment, the rate of bone maturation/ d; Q- o5 V( g+ o* m
decelerates and gradually returns to normal.8,9$ Y' a" e* Z9 \( a! U. ]5 t: ?7 p, C( `
There are conflicting reports and controversy
6 R; l, k- i* U! aover the effect of early androgen exposure on adult
! q9 M! B7 T" }& apenile length.10,11 Some reports suggest subnormal! T* G* z x9 Z6 R" p1 }1 s
adult penile length, apparently because of downreg-
2 z6 @# v+ _& Z" Iulation of androgen receptor number.10,12 However,) X5 A7 ?' C8 I: ~3 l
Sutherland et al13 did not find a correlation between
5 }9 ~' t- W( L2 X- w" Xchildhood testosterone exposure and reduced adult
. L4 f& n1 ?7 i4 l8 T: Zpenile length in clinical studies.1 V6 ~& C/ G5 N1 ]+ A8 d$ E
Nonetheless, we do not believe our patient is
( H) h; ~4 O1 N, |% Wgoing to experience any of the untoward effects from
. v0 ~" g8 P6 M! {1 ^- l2 btestosterone exposure as mentioned earlier because9 y9 P: B: ?" ]) ^4 d0 N
the exposure was not for a prolonged period of time.' s4 E$ n( ]' [( w) \
Although the bone age was advanced at the time of3 g8 D/ p# |1 y" X3 Y3 Z
diagnosis, the child had a normal growth velocity at; D) \; Z3 c% r% c7 V$ ]% E* ]
the follow-up visit. It is hoped that his final adult
& u7 U1 {; }9 a4 _, Oheight will not be affected.
! X. @6 {9 S8 _ t! F& H9 |0 C& HAlthough rarely reported, the widespread avail-
; V; A4 A" w7 n2 O, ]! Hability of androgen products in our society may
" a# m1 c" A" F6 X7 D' X! e* W" |indeed cause more virilization in male or female ^# p0 d5 \- k
children than one would realize. Exposure to andro- h8 d$ a: ]" u6 w3 w
gen products must be considered and specific ques-
" d0 W7 L8 C" }8 h2 R8 ~tioning about the use of a testosterone product or: T9 H' s- m% Y, C
gel should be asked of the family members during
]+ h2 J# ~% Z: @! J) X0 k5 H0 Fthe evaluation of any children who present with vir-
& H4 b; {6 P6 A4 filization or peripheral precocious puberty. The diag-
) V9 B/ h9 E& [nosis can be established by just a few tests and by
`4 m. _1 ]+ A4 j! P( i7 Oappropriate history. The inability to obtain such a |: `- _9 {) m2 @8 e8 M
history, or failure to ask the specific questions, may8 |" T; L& P4 G+ z7 U
result in extensive, unnecessary, and expensive
6 G4 Y8 N+ s, q9 l' Z3 s4 j; p1 jinvestigation. The primary care physician should be+ `1 J( z" D' S* Y0 k
aware of this fact, because most of these children4 g8 h7 R; n0 E5 P; q- p
may initially present in their practice. The Physicians’
+ h, V) t6 p0 k9 j8 aDesk Reference and package insert should also put a9 y5 x* n% c( ?7 N/ [' b/ ]$ M
warning about the virilizing effect on a male or! N a9 E; [ {& W# O( D L7 g% Y9 Y
female child who might come in contact with some-3 ?$ v0 w$ j5 G; V7 J, l3 ]& s) g* _
one using any of these products.9 y0 j ]. s& t3 w& X4 g
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Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
4 v- [& _- s$ Y5 i9 ?8 @8 ~5 d( q2002: 565-628.
" k% t% y' z* g+ O" z2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
5 ]& N$ z5 U4 ~, {, Ypuberty in children with tumours of the suprasellar pineal2 g& `8 T1 E, F+ H( }
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
5 z, T/ z$ v9 \3 _) c9 S$ STopical Testosterone Exposure / Bhowmick et al 543
5 f0 t3 V* e5 z9 i, Q1 e, }$ h. e% V) Gareas: organic central precocious puberty. Acta Paediatr.6 O! K$ I G; X5 T$ h1 S
2001;90:751-756.3 ]' G( p; T x! S
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed./ i, y5 m. y4 }5 ]. V0 {7 H
Pediatric Endocrinology. 4th ed. New York, NY: Marcel" Q& |( W0 @, H. L% N
Dekker Inc; 2003:211-238.
5 U' G' I) ~2 v& Q$ V; d; U" S4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
9 m0 d% y) h4 G Z2 _9 ~( u& ^development in a two-year-old boy induced by topical8 Y2 z: s, m& E- q. r* |8 } \4 M
exposure to testosterone. Pediatrics. 1999;104:e23.8 c S( |0 a5 n
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
- I; j1 \0 N% \3 iSkeletal Development of the Hand and Wrist. 2nd ed., Y) Z; B* ?) T5 s0 F
Stanford, CA: Stanford University Press; 1959.
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