| 
註冊時間2023-5-6精華在線時間 小時米币 最後登錄1970-1-1 
 | 
 
 發表於 2025-1-4 03:38:58
|
顯示全部樓層 
| is a significant concern for physicians. Central9 k$ J( v( o" S8 D( l precocious puberty (CPP), which is mediated
 * [: v6 U1 X  U7 x% nthrough the hypothalamic pituitary gonadal axis, has4 g" b1 j" ?! ~0 A9 I2 |  A
 a higher incidence of organic central nervous system8 |& \4 Z: s5 N4 l
 lesions in boys.1,2 Virilization in boys, as manifested
 1 \. c- _$ B8 u& d' Tby enlargement of the penis, development of pubic
 / V$ y/ \6 L+ l6 c/ o7 Q5 `# ahair, and facial acne without enlargement of testi-
 . I7 H3 m4 ^% }3 r7 ]cles, suggests peripheral or pseudopuberty.1-3 We
 " x: ~- e# L) A* F/ |report a 16-month-old boy who presented with the
 & w; m! {4 }# D( penlargement of the phallus and pubic hair develop-7 x0 [. ^0 l  z  |
 ment without testicular enlargement, which was due1 p  \) ]$ t& s+ [7 w  w
 to the unintentional exposure to androgen gel used by+ v" Q9 M7 B9 a3 s
 the father. The family initially concealed this infor-
 8 V3 K  R7 @$ B( V  `2 e' ?" Omation, resulting in an extensive work-up for this0 ?# R3 b+ L  P8 @5 i5 X7 d
 child. Given the widespread and easy availability of
 3 g) b8 U5 [5 s9 ^0 ptestosterone gel and cream, we believe this is proba-
 0 G( R: ^# ?  H. _bly more common than the rare case report in the' v& r) x5 a) J; Y1 u$ @0 n: q
 literature.46 j: U# R( d! K  `0 x
 Patient Report: t2 g& [4 A/ n' i3 s
 A 16-month-old white child was referred to the
 # X( O+ [; e6 B$ }' Tendocrine clinic by his pediatrician with the concern
 2 a  V% Z" ]& X2 W# u; D8 Q- Bof early sexual development. His mother noticed8 w: g! P& }/ n, I/ H0 m' o
 light colored pubic hair development when he was
 ' l" |1 @0 G9 g& u, ]$ D3 nFrom the 1Division of Pediatric Endocrinology, 2University of7 ?; I$ C, K' h* d& Z; g
 South Alabama Medical Center, Mobile, Alabama.% w4 n  c) U$ R
 Address correspondence to: Samar K. Bhowmick, MD, FACE,
 1 _+ m3 h# t9 b. F# x/ oProfessor of Pediatrics, University of South Alabama, College of3 E' L! i+ n+ W( c% q2 u
 Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;1 b+ R3 E# G  w* W: z* m
 e-mail: [email protected].' D6 g2 T+ n* e# @8 x5 ~
 about 6 to 7 months old, which progressively became2 C6 ~2 Q' I! g3 `0 l; G
 darker. She was also concerned about the enlarge-
 7 s, W6 E' R! \5 M, yment of his penis and frequent erections. The child
 ; N" c4 I) X' ~% L& g2 D- jwas the product of a full-term normal delivery, with9 \! d+ M1 P* i
 a birth weight of 7 lb 14 oz, and birth length of
 q. h) h5 @* [+ a20 inches. He was breast-fed throughout the first year' S! s8 D5 z2 z8 v* y
 of life and was still receiving breast milk along with$ j# K8 @/ S  E& o( ?
 solid food. He had no hospitalizations or surgery,# S, ?) f5 D7 L0 v6 U
 and his psychosocial and psychomotor development. g" c) E/ U9 r. D4 q" [3 l
 was age appropriate.% w0 p5 D1 Z7 W* z+ n
 The family history was remarkable for the father,
 1 }0 i6 n# w. {8 z7 @: P% \0 cwho was diagnosed with hypothyroidism at age 16,* i( H  Y$ _7 b
 which was treated with thyroxine. The father’s
 & k+ e* N8 Q  nheight was 6 feet, and he went through a somewhat
 : q. d" X' O2 j$ k; `  f5 \9 Mearly puberty and had stopped growing by age 14.: U! [( ?) D) j) W- W  t
 The father denied taking any other medication. The6 D' t- Y! }2 {. s0 x
 child’s mother was in good health. Her menarche
 7 \9 t9 q# O* l7 Hwas at 11 years of age, and her height was at 5 feet# \9 X0 |( E+ X8 p- ~
 5 inches. There was no other family history of pre-7 C3 I! s- D+ Q( }: t- w8 K
 cocious sexual development in the first-degree rela-( c. g2 \3 h: x) E8 k
 tives. There were no siblings.
 8 q- i+ z6 }. x/ X5 nPhysical Examination: b" `, L, \' N. `+ ~  u, ^
 The physical examination revealed a very active,
 ! J0 _; g/ l9 }% Splayful, and healthy boy. The vital signs documented( t7 f9 k5 [* O! s
 a blood pressure of 85/50 mm Hg, his length was  n# s& r! h% k
 90 cm (>97th percentile), and his weight was 14.4 kg: R' f) c  `% w, p5 ~- \
 (also >97th percentile). The observed yearly growth
 ' Z0 W" R3 d' e2 Z- Y6 p. Nvelocity was 30 cm (12 inches). The examination of, G8 O/ D, W9 H+ _. a  h2 ]0 y/ D
 the neck revealed no thyroid enlargement.. a: w# Y, K) l
 The genitourinary examination was remarkable for
 , B" z+ b$ F  K& V# A. T& ?, menlargement of the penis, with a stretched length of
 ; C2 S: {% F# D, r+ R& v8 cm and a width of 2 cm. The glans penis was very well$ A& T1 G" x5 S5 q" t3 T
 developed. The pubic hair was Tanner II, mostly around5 w( z* M' ~! c! W
 540
 " L2 N! a( q! M2 F2 ?' Bat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
 % s# k3 A' Y6 b8 n8 q; Gthe base of the phallus and was dark and curled. The
 - i3 ^$ O4 ]8 e$ @3 Ftesticular volume was prepubertal at 2 mL each.
 % s* f& _6 k& [( k' C/ tThe skin was moist and smooth and somewhat. P3 D+ l1 \3 I/ y: j
 oily. No axillary hair was noted. There were no
 $ ]1 _* f$ N- U) babnormal skin pigmentations or café-au-lait spots." v) R" M0 d  V+ U# u
 Neurologic evaluation showed deep tendon reflex 2+1 t6 p. P- j. q4 u+ q
 bilateral and symmetrical. There was no suggestion3 G4 J: a! C4 _! y0 {- e
 of papilledema.
 h8 W9 Q* A9 L2 _5 u" M4 l8 HLaboratory Evaluation; K* X4 T* a9 l
 The bone age was consistent with 28 months by" U0 s- Z$ C9 M- D3 H. R/ Q
 using the standard of Greulich and Pyle at a chrono-
 7 k1 L: X9 V6 B  K; g7 \logic age of 16 months (advanced).5 Chromosomal
 ; X* L" f1 J( Y  N% e+ Qkaryotype was 46XY. The thyroid function test
 . T2 \' q9 `9 B. G. P+ f7 kshowed a free T4 of 1.69 ng/dL, and thyroid stimu-( U2 t& |0 `; S( M. R! k3 e
 lating hormone level was 1.3 µIU/mL (both normal).' H% c9 a! Q9 N8 a" A- `
 The concentrations of serum electrolytes, blood
 ( R: e. j% j; u9 G8 L! i. iurea nitrogen, creatinine, and calcium all were
 5 P, H3 G. ~+ iwithin normal range for his age. The concentration
 9 Z8 S: G( z+ V$ G$ \9 zof serum 17-hydroxyprogesterone was 16 ng/dL
 1 W7 [1 Q6 A$ Y(normal, 3 to 90 ng/dL), androstenedione was 20+ R) I8 P1 J' U7 d# I# ~
 ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
 ' R$ ~( z7 z6 H) x" K% u$ }1 R, aterone was 38 ng/dL (normal, 50 to 760 ng/dL),
 % ~4 ^. a, P1 x( Mdesoxycorticosterone was 4.3 ng/dL (normal, 7 to
 ' a0 m* c, O- A/ S3 w, v5 ]$ |49ng/dL), 11-desoxycortisol (specific compound S)
 3 c& h- C, b2 x2 f2 a; uwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
 , [& E" Y7 G$ H- l) B3 Y7 O, Otisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total' l; p' X1 `% h8 z& X; E) g
 testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
 # {# e$ p9 K6 p( f) @6 Tand β-human chorionic gonadotropin was less than- w7 \% z+ ^0 j8 M  y
 5 mIU/mL (normal <5 mIU/mL). Serum follicular0 K6 z8 q- p9 T- l
 stimulating hormone and leuteinizing hormone
 2 x+ a( k# G5 `9 ~# jconcentrations were less than 0.05 mIU/mL1 Z8 g+ D& L+ v( x
 (prepubertal).
 8 f! v/ `' t/ [" m# K$ B5 `The parents were notified about the laboratory' I% x. b5 l8 A) N. z. q
 results and were informed that all of the tests were
 1 y9 c3 r% P1 snormal except the testosterone level was high. The
 2 g! z2 ^1 }2 gfollow-up visit was arranged within a few weeks to
 - C% L( B/ A2 mobtain testicular and abdominal sonograms; how-
 8 E0 P5 U4 o/ ~9 H& tever, the family did not return for 4 months.% o. y' r/ A9 y% m/ t* r
 Physical examination at this time revealed that the0 n7 T! c6 \/ v  c" F7 U
 child had grown 2.5 cm in 4 months and had gained4 K3 ^' _8 ]1 x/ B. T, z
 2 kg of weight. Physical examination remained
 ( M- `. e7 f% |( }4 J" n9 junchanged. Surprisingly, the pubic hair almost com-% D/ x* U& X, e  Y' v. J
 pletely disappeared except for a few vellous hairs at; j5 O% w% e7 H5 o$ h  P
 the base of the phallus. Testicular volume was still 2
 5 Z$ A  F& Q* L$ \0 t0 ?7 b  p) VmL, and the size of the penis remained unchanged.9 p+ k$ k, Y: C7 D$ v9 d
 The mother also said that the boy was no longer hav-
 4 y2 k9 g/ _9 J3 a$ ^ing frequent erections.( ?0 v* p7 `  D4 h6 l
 Both parents were again questioned about use of6 ], r) K* g& s8 r3 {
 any ointment/creams that they may have applied to% U, I0 a7 H! W
 the child’s skin. This time the father admitted the
 }! A# _: j* A+ h: X$ `Topical Testosterone Exposure / Bhowmick et al 541- n  R; u0 K1 f8 i4 R
 use of testosterone gel twice daily that he was apply-
 6 ?1 C5 o" F# ~0 a$ _* F5 q7 Bing over his own shoulders, chest, and back area for
 + v) v, u6 s# h0 `a year. The father also revealed he was embarrassed
 4 @& {# L# o, r4 k- S  t  Uto disclose that he was using a testosterone gel pre-6 t  L. x3 U& |0 |  @
 scribed by his family physician for decreased libido
 ; ~& }0 ^9 o( F9 Msecondary to depression.
 3 J- d, ]/ u1 m5 R7 nThe child slept in the same bed with parents.2 e( [6 c' l0 u
 The father would hug the baby and hold him on his" ]+ `) c8 k: ]2 p
 chest for a considerable period of time, causing sig-
 % k6 {& R9 `" y/ ^' Q# z' q' Q) r1 J% Hnificant bare skin contact between baby and father.
 ) [* e/ a9 A$ H. M5 _The father also admitted that after the phone call,
 8 i1 X. c& c) e/ I; ~  m* _- |: jwhen he learned the testosterone level in the baby
 ' J' }! j, y; Awas high, he then read the product information
 9 p1 c. D9 e, ^8 f$ B- @packet and concluded that it was most likely the rea-
 2 M3 m8 W( E: qson for the child’s virilization. At that time, they
 $ @) |# Y$ R/ E, Qdecided to put the baby in a separate bed, and the
 2 Z- E# k; Q2 k, ~father was not hugging him with bare skin and had$ ~: u2 @( u% I8 ]: q0 l2 c
 been using protective clothing. A repeat testosterone
 ( ]8 b/ `5 U- Z5 B' ttest was ordered, but the family did not go to the
 b8 V5 E  K, X! A: M0 G# y- flaboratory to obtain the test.
 / u6 y6 n  @1 `0 RDiscussion
 ! L7 `. E: G6 _7 M7 |3 u6 ^Precocious puberty in boys is defined as secondary
 3 z. [$ F, M! T/ C- Vsexual development before 9 years of age.1,4& d& M$ M! u' [* l  }1 @
 Precocious puberty is termed as central (true) when
 * e4 Z0 ^1 O# y7 Z* Y9 ~6 T; v$ \it is caused by the premature activation of hypo-- w6 D5 k- E6 M# I1 A7 A
 thalamic pituitary gonadal axis. CPP is more com-9 P5 {) D, S) o: y4 p4 U. a0 j
 mon in girls than in boys.1,3 Most boys with CPP7 I. h& z0 C/ B6 n: c$ p0 d7 a
 may have a central nervous system lesion that is. L2 j. @3 L" [$ C2 V2 D; ]; b
 responsible for the early activation of the hypothal-
 0 n3 F: G3 _$ Pamic pituitary gonadal axis.1-3 Thus, greater empha-5 P! Y- }# y1 P3 b1 g2 J# t2 L
 sis has been given to neuroradiologic imaging in, O6 k" I0 _# P
 boys with precocious puberty. In addition to viril-
 ( O- T% L* B# q- Yization, the clinical hallmark of CPP is the symmet-  u2 t% g* a* |6 E: B# Q7 D2 n: I
 rical testicular growth secondary to stimulation by4 m( [( Q) H9 ^# v
 gonadotropins.1,3- y2 N" T" A  Y$ @# Q2 J
 Gonadotropin-independent peripheral preco-$ l& ~1 u$ q$ w; F/ S" h! e
 cious puberty in boys also results from inappropriate  n. C# M3 {* i$ i- ~
 androgenic stimulation from either endogenous or
 / }) k( l- l5 H8 S+ B* P  `' sexogenous sources, nonpituitary gonadotropin stim-. b# i4 H0 f, e3 P- [
 ulation, and rare activating mutations.3 Virilizing
 8 g# K9 M6 F& n/ |/ [2 @congenital adrenal hyperplasia producing excessive3 Z- f4 I* [' j5 Z5 s/ P
 adrenal androgens is a common cause of precocious8 w* f8 c3 h) A& B& y
 puberty in boys.3,4
 * l8 q- }9 Z+ \. `The most common form of congenital adrenal( ~! B; v5 f. B* @* g( W6 @
 hyperplasia is the 21-hydroxylase enzyme deficiency.
 6 V" S2 U7 C! M9 L) U7 {6 }2 o4 oThe 11-β hydroxylase deficiency may also result in5 h* N7 N: ]$ p# J
 excessive adrenal androgen production, and rarely,
 ( Y% N, i0 S7 d9 C! xan adrenal tumor may also cause adrenal androgen
 & m2 t4 M% p' N/ z& z" X6 Lexcess.1,3
 : z, G: `& w, K# |$ a7 Y- r5 tat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
 * L6 h$ y( v1 ^4 t5 N, r542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
 + v" l" Z& k! Y  ]7 T( s- w$ l- qA unique entity of male-limited gonadotropin-
 . u: _, P' P! y& ?8 Pindependent precocious puberty, which is also known' b7 P$ I/ X. a* {5 K  u
 as testotoxicosis, may cause precocious puberty at a
 $ e5 X5 x* }. j! yvery young age. The physical findings in these boys
 9 D% h/ b: ?3 C3 l, d1 E' fwith this disorder are full pubertal development,
 " Y& W" A5 v8 M' Wincluding bilateral testicular growth, similar to boys
 / Z% |7 ~- Q! x- W2 e. }5 A! Lwith CPP. The gonadotropin levels in this disorder
 , A0 a( S' ?3 P! N- K9 v- Jare suppressed to prepubertal levels and do not show$ e6 W1 y; z* Y( X
 pubertal response of gonadotropin after gonadotropin-
 * T, m" \  {) J8 A; D" creleasing hormone stimulation. This is a sex-linked
 ( F, R( N) W1 {: P/ b! Cautosomal dominant disorder that affects only
 , w+ p2 {) Z; t' Vmales; therefore, other male members of the family
 ; q! ]) L* f( o' k4 s4 }may have similar precocious puberty.3: j: C* w! E' N' o0 K
 In our patient, physical examination was incon-
 ; O6 l& y( K5 B  E+ y2 I& {sistent with true precocious puberty since his testi-
 ! Q$ e& z, d6 a0 G4 k8 jcles were prepubertal in size. However, testotoxicosis
 - [% z2 R. F" c. r1 lwas in the differential diagnosis because his father" s$ M; R$ b+ I  \3 j4 @8 J1 a% g
 started puberty somewhat early, and occasionally,4 u8 p8 d% u/ S: i) r7 h
 testicular enlargement is not that evident in the
 7 r+ r; _. D) Qbeginning of this process.1 In the absence of a neg-
 1 A  X* r3 p( Xative initial history of androgen exposure, our
 c# [- `( y5 L) x0 G" Cbiggest concern was virilizing adrenal hyperplasia,
 ! }$ M6 q4 y) @2 Deither 21-hydroxylase deficiency or 11-β hydroxylase
 , O: o( Q! q, A5 O& M4 M, R" W0 tdeficiency. Those diagnoses were excluded by find-9 L( l  ?; J0 n/ I2 G4 W9 @; d1 V8 \
 ing the normal level of adrenal steroids.
 % l( j6 _3 X% D+ D  h* B: B6 YThe diagnosis of exogenous androgens was strongly0 M8 ]# j6 P0 C0 V  ]
 suspected in a follow-up visit after 4 months because) Z8 q1 q$ p  d9 X* [
 the physical examination revealed the complete disap-7 P# l- _# b, j/ _. l. M, L$ W
 pearance of pubic hair, normal growth velocity, and
 8 k" ~: y$ O! bdecreased erections. The father admitted using a testos-
 9 H- F) B4 D/ f7 mterone gel, which he concealed at first visit. He was
 6 u3 g& O* B8 Y+ e% @using it rather frequently, twice a day. The Physicians’; l# }/ t2 m# b: K1 J0 D
 Desk Reference, or package insert of this product, gel or
 3 g  R! M' l8 ?( B5 \( Y' [# Q% u3 K  Acream, cautions about dermal testosterone transfer to7 H, S( _0 x/ ?1 [& T4 i, q
 unprotected females through direct skin exposure.
 $ t3 v0 e+ s7 O# s( bSerum testosterone level was found to be 2 times the4 Y. b8 w8 l2 d$ U
 baseline value in those females who were exposed to' R2 n# w- T$ d4 `' Y
 even 15 minutes of direct skin contact with their male/ M! R% v8 U' A* {2 F4 r2 U- ]
 partners.6 However, when a shirt covered the applica-4 u0 c- L, J. y7 ^, G
 tion site, this testosterone transfer was prevented.
 w! V4 R" s9 o2 d% DOur patient’s testosterone level was 60 ng/mL,
 & ^' ~% [4 @& b0 v! c" Z$ [which was clearly high. Some studies suggest that
 # l7 b# P. y+ C  s% g" q4 g) |dermal conversion of testosterone to dihydrotestos-  ?$ [! w' o" L) K
 terone, which is a more potent metabolite, is more
 4 P. B0 o2 ^5 _" Nactive in young children exposed to testosterone
 : C+ ^+ P* ]# l' Y9 I8 _1 Z) uexogenously7; however, we did not measure a dihy-, W' I) i  ]% G
 drotestosterone level in our patient. In addition to5 `, D6 W& B* |" {3 E! m
 virilization, exposure to exogenous testosterone in) g/ D! l7 z& [8 v
 children results in an increase in growth velocity and
 6 G4 \/ k$ Q/ Y1 }advanced bone age, as seen in our patient.
 0 X( s6 j6 W" s2 rThe long-term effect of androgen exposure during& c/ B5 x6 s. g
 early childhood on pubertal development and final$ t2 k8 M+ e  S. r9 |- }
 adult height are not fully known and always remain
 & v* T6 e( @7 O8 [+ t2 ^* {) ^" @a concern. Children treated with short-term testos-
 - x4 D( X6 A+ S  Wterone injection or topical androgen may exhibit some/ N  ?* j9 K9 X7 \( T: P% m$ ?! M
 acceleration of the skeletal maturation; however, after
 4 H/ p: ?2 u! Ncessation of treatment, the rate of bone maturation, W7 X/ Q5 P9 r' `' {
 decelerates and gradually returns to normal.8,9
 8 H1 k, z7 W# ]$ x. p* W3 MThere are conflicting reports and controversy% R% x9 p+ z/ x: Z# s% H
 over the effect of early androgen exposure on adult4 F  l6 P: C4 P- ]0 W2 X
 penile length.10,11 Some reports suggest subnormal
 + P& }; L; s6 M+ T( dadult penile length, apparently because of downreg-! y" O! e! m$ `6 g
 ulation of androgen receptor number.10,12 However,
 / }0 U2 n/ ~, M% Y% g% X2 QSutherland et al13 did not find a correlation between$ a' V# f; K% m
 childhood testosterone exposure and reduced adult
 / G( H5 c4 |6 I" z( k  K8 q+ @" hpenile length in clinical studies.; H% x- B( E5 j# v8 p
 Nonetheless, we do not believe our patient is
 6 H. M5 M$ S4 j7 A, Y% h/ \9 }going to experience any of the untoward effects from
 1 ~: i' t# z& f9 y+ ltestosterone exposure as mentioned earlier because
 1 n! e$ y& i4 U! Vthe exposure was not for a prolonged period of time." ~! A& D) Q( Y9 h0 u1 M9 S1 y
 Although the bone age was advanced at the time of
 # m/ H% u. v+ o( I- C9 rdiagnosis, the child had a normal growth velocity at
 : u1 W( p* [* v# Nthe follow-up visit. It is hoped that his final adult2 V5 f- z( _( Y3 k
 height will not be affected., u, o( j, m# G8 V
 Although rarely reported, the widespread avail-
 , C2 Z! C' y& t1 a, i6 ]ability of androgen products in our society may
 ! A: r9 }" G  Yindeed cause more virilization in male or female
 4 [8 ^$ o7 Q# T% fchildren than one would realize. Exposure to andro-
 8 P) }0 l$ L0 g$ c4 D  {gen products must be considered and specific ques-/ i1 w9 N7 I, T, @
 tioning about the use of a testosterone product or
 2 K" V1 p; L0 T8 N9 _2 z4 U9 pgel should be asked of the family members during& M* @( u! r' z; _) G: w& r% A
 the evaluation of any children who present with vir-
 % f- V, _/ f2 m8 iilization or peripheral precocious puberty. The diag-9 ?- O! ?& `8 S) @
 nosis can be established by just a few tests and by( e2 D$ ^% N, G: K+ m! o
 appropriate history. The inability to obtain such a/ l1 C2 I9 \0 D& B2 h6 j
 history, or failure to ask the specific questions, may0 ]8 R/ h1 G7 K8 b! ~1 M
 result in extensive, unnecessary, and expensive
 0 H% {# P& Q, p& {* p. finvestigation. The primary care physician should be5 X, R: f& [5 D' o3 _
 aware of this fact, because most of these children* H, e8 r* u) h
 may initially present in their practice. The Physicians’& B' H0 X; E" l% R) N
 Desk Reference and package insert should also put a
 9 S( D* W$ E# E5 U! {# [, P# Awarning about the virilizing effect on a male or0 b0 d, ?8 I  e% _2 z- x1 Y7 R
 female child who might come in contact with some-
 1 ]: h) t8 c- r% ]  h, ?- \" _one using any of these products.
 : G& W' j7 |, G$ @6 ^, k7 ?References6 y! {; O' F( ^3 I* E
 1. Styne DM. The testes: disorder of sexual differentiation/ E3 e# w  l6 }' B) E) U; u0 h
 and puberty in the male. In: Sperling MA, ed. Pediatric+ H. M% J$ U4 |+ U7 T1 i
 Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;0 k! h5 T4 Y1 e9 {- \
 2002: 565-628.
 * w% x% v' `1 b6 `5 y2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
 8 v. [, ^: p' K( {6 epuberty in children with tumours of the suprasellar pineal+ T) D( U% i6 l" c$ ~) Q0 m
 at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from2 X* v! I/ X* w. }  v. }
 Topical Testosterone Exposure / Bhowmick et al 543- i# `$ k$ A, g$ t
 areas: organic central precocious puberty. Acta Paediatr.
 ! @8 H  |- I+ x; p! i9 F; P1 ^2 T' R2001;90:751-756.) Y( b2 {- R6 E% y5 l' s& {
 3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
 6 O# |+ @. T& HPediatric Endocrinology. 4th ed. New York, NY: Marcel
 ; a' _: `0 ^* \( S% `6 l9 dDekker Inc; 2003:211-238.8 Q/ \$ a' [0 P0 A
 4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual, W/ z- v. G- z1 ?2 x
 development in a two-year-old boy induced by topical
 $ H" y' J$ O7 B) M" U$ e, ]$ Uexposure to testosterone. Pediatrics. 1999;104:e23.7 i* I' [7 I* \$ W
 5. Greulich WW, Pyle SI, eds. Radiographic Atlas of$ e7 `( q0 R! H' O. r
 Skeletal Development of the Hand and Wrist. 2nd ed.
 ; u3 R7 |7 N& m5 H& C' cStanford, CA: Stanford University Press; 1959.
 9 \& u1 ?; ~8 \& @3 M$ o6. Physicians’ Desk Reference. Androgel 1% testosterone,
 ' I8 m8 N+ p3 E- pUnimed Pharmaceutical Inc. Montvale, NJ: Medical
 8 y+ C0 j) }9 }$ cEconomics Company, Inc; 2004:3239-3241.8 [+ L5 G5 N5 y" r, \
 7. Klugo RC, Cerny JC. Response of micropenis to topical
 / @% [; g2 {! F2 utestosterone and gonadotropin. J Urol. 1978;119:+ m5 `% S2 k0 O8 q7 `  ?
 667-668.
 8 m4 r# z; Y. x' ~2 H, M0 [( w8. Guthrie RD, Smith DW, Graham CB. Testosterone; }, K4 h! ^' L+ l) c' t8 n7 y- Z% G
 treatment for micropenis during early childhood. J Pediatr.
 & Y" M8 _# {0 H3 h5 r: z4 |" V1973;83:247-252.
 ' l: k  o' S" N, l9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone+ S. z$ o& [3 |, ?( s; W! g
 therapy for penile growth. Urol. 1975;6:708-710.
 / y# h" N7 k1 U% n+ ]1 E- K8 }10. Husmann DA, Cain MP. Microphallus: eventual phallic. ^! o( x; z# e) B6 C" D6 ?5 t" X. s
 size is dependent on the timing of androgen administra-
 0 \* B" _1 f+ O. s' J0 q4 _$ Y: D, Rtion. J Urol. 1994;152:734-739., e$ |% A$ y; Q
 11. McMahon DR, Kramer SA, Husmann DA. Micropenis:: z: v8 Q. u- L- L
 does early treatment with testosterone do more harm
 4 r2 \7 k3 O2 u7 h* e. a$ o0 kthan good? J Urol. 1995;154:825-829.
 ) c8 f. r# c/ I1 {; @, u12. Takane KK, George FW, Wilson JD. Androgen receptor
 $ \1 r3 P% F& N+ P- iof rat penis is down-regulated by androgen. Am J Physiol.4 r2 x. f1 f$ r* P
 1990;258:E46-E50.
 1 y. q$ n8 u1 }  V13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect
 $ b6 H$ Z. B% J0 [4 W7 k! yof prepubertal androgen exposure on adult penile
 $ g& q0 z+ O) `- t* qlength. J Urol. 1996;156:783-787.
 | 
 |