Presenting History
In children presenting with short stature, elicit the timing of growth failure, serial height velocity, facial appearance, body proportions, chronic systemic symptoms, and parental heights.
- Deceleration of Linear Growth:
- Onset & Duration: When did the child stop outgrowing clothes or changing shoe sizes?
- Growth Velocity: What is the annual height gain over the past 1-2 years? ($\ge 5\text{ cm/year}$ is normal; $< 4\text{ cm/year}$ confirms Pathological Short Stature).
- Classroom Standing: Is the child the shortest in the class or school assembly queue?
- Body Habitus & Facies:
- Facial Features: Does the child look much younger than chronological age (infantile, cherubic, "doll-like" facies)?
- Body Composition: Is there truncal adiposity with slender limbs (GHD / Cushing)? Or marked wasting (malnutrition / celiac)?
- Genitalia: In boys, is there a micropenis? Delayed pubertal onset?
- Neurological & Visual Symptoms:
- Any chronic headache, morning vomiting, visual field defects, or bumping into objects (pituitary tumor / craniopharyngioma)?
Negative History (3C 1D Framework)
| Category | Pertinent Negative Question | Rationale / Significance |
|---|---|---|
| Causes | Hypothyroidism: No history of cold intolerance, constipation, lethargy, or dry coarse skin. Celiac / GI: No history of chronic diarrhea, abdominal distension, recurrent oral aphthae, or poor appetite. Renal / Cardiac: No history of polyuria, nocturia, puffiness, cyanosis, or exertional breathlessness. | Primary hypothyroidism causes profound growth arrest with high BMI. Silent celiac disease is a major cause of occult short stature in India. Chronic kidney disease and congenital heart disease impair linear growth. |
| Complaints (Differentiating) | Body Disproportion: No history of short limbs with normal trunk (achondroplasia) or short trunk with normal limbs. Syndromic Signs: In girls, no webbing of neck, cubitus valgus, low hairline, or puffy hands/feet (Turner syndrome). | Differentiates proportionate short stature from skeletal dysplasias. Turner syndrome (45,X) must be ruled out in every short female child. |
| Complications | Raised ICP: No early morning headaches, visual blurring, or projectile vomiting. Polyuria / Polydipsia: No intense unquenchable thirst or nocturnal bedwetting. | Rules out intracranial tumor (craniopharyngioma) compressing optic chiasm. Rules out central diabetes insipidus indicating posterior pituitary involvement. |
| Differentials | Familial Short Stature (FSS): Growth velocity is normal ($\ge 5\text{ cm/yr}$), child grows parallel to target centile. Constitutional Delay (CDGP): Normal growth velocity, family history of delayed puberty in parents. | Normal variants have normal annual height velocity ($\ge 5\text{ cm/year}$); pathological causes have subnormal velocity ($<4\text{ cm/year}$). |
Other Relevant History
- Birth History: Birth weight, gestational age (SGA / IUGR status); neonatal history of hypoglycemia, prolonged jaundice, or micropenis (classic neonatal triad of hypopituitarism).
- Mid-Parental Height (MPH):
- Boy: $[\text{Father's Ht} + (\text{Mother's Ht} + 13)] / 2 \pm 5\text{ cm}$.
- Girl: $[(\text{Father's Ht} - 13) + \text{Mother's Ht}] / 2 \pm 5\text{ cm}$.
- Pubertal Staging: Tanner staging of pubic hair, breasts/genitalia, and testicular volume.
History Summary
"Master/Miss `Patient Name`, a `Age` old `male/female` child, `Birth Order` born of a `consanguineous/non-consanguineous` marriage from `City, State`, presented with a `Duration` history of severe linear growth failure with subnormal growth velocity (`Velocity in cm/year`), cherubic infantile facial appearance, truncal adiposity, and `micropenis / delayed dentition`, with parents of normal adult height (Target Height `MPH in cm`), in the absence of headache, visual disturbances, chronic diarrhea, hypothyroidism, or disproportionate limb shortening.
In view of the proportionate short stature with subnormal height velocity and doll-like facies, I would like to consider a provisional diagnosis of Pathological Proportionate Short Stature, most likely Isolated Growth Hormone Deficiency (GHD), presenting in prepubertal phase without evidence of intracranial tumor or panhypopituitarism."
General & Head-to-Toe Examination
- Vitals: Blood pressure, heart rate, temperature.
- Detailed Anthropometry (Mandatory Set):
- Height: Measure with calibrated Stadiometer (barefoot, Frankfort horizontal plane); plot on IAP/WHO charts; determine Height Age and Z-score ($< -3\text{ SD}$ diagnostic of severe short stature).
- Weight & BMI: Determine Weight Age and BMI Z-score.
- Annual Growth Velocity: Calculate cm/year ($< 4.0\text{ cm/year}$ confirms pathology).
- Upper Segment : Lower Segment (US:LS) Ratio: Assess for proportion (Birth: $1.7$, 1y: $1.4$, 3y: $1.3$, 7y: $1.1$, $>10\text{y}$: $1.0$).
- Arm Span: Compare arm span with height (Arm span $\approx$ Height $\pm 2\text{ cm}$; difference $>3\text{ cm}$ indicates disproportion).
- Physical Examination:
- Facies: Doll-like / cherubic facies, frontal bossing, depressed nasal bridge.
- Voice: High-pitched voice.
- Fat Distribution: Truncal / centripetal adiposity with thin extremities.
- Genitalia (Boys): Stretched Penile Length (SPL) measured from pubic ramus to tip of glans ($< -2.5\text{ SD}$ indicates micropenis); testicular volume using Prader orchidometer.
- Dysmorphic Stigmata: Webbed neck, low hairline, shield chest, cubitus valgus, short 4th metacarpal.
Systemic Examination
- CNS: Visual acuity, confrontation visual field testing (rule out bitemporal hemianopia), fundoscopy for papilledema or optic atrophy; cranial nerves I-XII.
- Cardiovascular, Respiratory, Abdomen: Clinically normal.
Final Summary & Diagnosis
"A `Age` old `male/female` child presenting with severe proportionate short stature (Height `Ht in cm`, Z-score `<-3 SD`), subnormal annual growth velocity (`Velocity in cm/year`), normal US:LS ratio (`Ratio`), doll-like cherubic facies, truncal adiposity, and micropenis (SPL `SPL in cm`), with normal fundus, intact visual fields, and normal systemic examination.
My final diagnosis is Pathological Proportionate Short Stature, most likely Isolated Growth Hormone Deficiency (GHD) (congenital/idiopathic), presenting in prepubertal stage without features of multiple pituitary hormone deficiency or craniopharyngioma."