i am short:::))) - a_antibody

[ArchivalUser]

A 14-year-old boy is evaluated for short stature. He has no significant past medical history and is considered otherwise healthy by his parents. He eats a normal diet and has regular meals. His height and weight have been consistently at the 5th percentile since early childhood. His physical examination is normal, with genitalia at Tanner stage 3. Which of the following is the most likely laboratory finding for this boy?

A. Bone age that is equivalent to chronologic age
B. Decreased complement C3 level
C. Decreased serum albumin concentration
D. Decreased thyroid stimulating hormone
E. Increased serum creatinine concentration

[ArchivalUser]

i think aaaaaaaa

[ArchivalUser]

aaa

[ArchivalUser]

familian short stature ......aaaaaa

[ArchivalUser]

The correct answer is
A. This boy most likely has familial short stature (FSS). Children with FSS usually have a normal birth weight and length. At the age of 2-3 years, however, their growth begins to decelerate and drops to around the 5th percentile. The onset and progression of puberty in children with FSS are normal. Bone age is typically consistent with the chronologic age.

A decreased complement C3 level (choice B) may suggest chronic inflammatory disorders. But, the lack of any signs or symptoms makes any chronic inflammatory disorder unlikely.

A decreased serum albumin concentration (choice C) can be secondary to a variety of conditions, such as nephrotic syndrome and malnutrition. But, the lack of supportive history and physical examination data makes these conditions unlikely.

Decreased thyroid stimulating hormone (choice D) suggests hyperthyroidism as the etiology of the boy's short stature, but it is highly unlikely in this case.

An increased serum creatinine level (choice E) indicates renal failure, but this is inconsistent with the child's history and physical examination

[ArchivalUser]

A. Bone age that is equivalent to chronologic age