Which type of renal stone crystals is known as coffin lid?
oxalate
struvite
urate
cystine
Correct Answer :
B. struvite
struvite or triple phosphate or MAP crystals are known as coffin lid crystals.
Related Questions
Which statement is false concerning the epididymis?
each epididymis can be palpable at the postero-lateral surface of the testis
has 3 parts; head, body, and tail
new batches of sperms stay in the epididymis around 2 days for maturation
shares the same blood supply of the testis
Which part of the prostate prevents the seminal fluid from entering the bladder during ejaculation?
central zone
peripheral zone
preprostatic tissue
anterior fibromuscular stroma
Which of the following mediates calcium reabsorption in the distal renal tubules?
aldosterone
hypocalcemia
parathyroid hormone
vitamin D
Which of the following is false regarding zona glomeruloza?
the most superficial layer of the adrenal cortex
responses to increased potassium levels, renin or decreased renal blood flow
it causes pheochromocytoma
secretes aldosterone
Which of the following is NOT a sex accessory tissue?
the prostate gland
seminal vesicles
epididymi
bulbourethral glands
Regarding multicystic kidneys, at what age does the compensatory renal growth end?
at birth
2 years
at puberty
none of the above
What is false concerning the collecting system structures of a typical kidney?
the renal pelvis could be intra or extra renal
the renal pelvis divides into 2 or 3 major calyces
major calyces divide into 2 or 3 minor calyces
unlike lateral calyces, polar calyces are often paired
Which statement is false concerning the dipstick method for detecting hematuria?
depends on the ability of hemoglobin to oxidize a chromogen indicator
negative results need to be confirmed by microscopic examination
has a sensitivity of 95% and a specificity of 75%
the presence of many epithelial cells suggests skin or vaginal contamination
What causes pink diaper syndrome is (are):
Staphylococcus epidermidis in the urine
dried urate crystals on the diaper
Adenovirus 11 in the urine
Candidiasis in the urine
Which group(s) of lymph nodes drain(s) the glans penis?
internal and external iliac
superficial inguinal
deep inguinal
superficial and deep inguinal
Which part of the prostate is traversed by the ejaculatory duct:
central zone
peripheral zone
transitional zone
fibromuscular stroma
Which anomaly might accompany horseshoe kidneys?
ureteropelvic junction obstruction
ureterocele
ureteral reflux
ureteral atresia
Which of the following does NOT increase PSA value?
trauma to the prostate
digital rectal examination
urinary retention
prostatitis
Which statement is false concerning smegma?
it is the white secretion produced under the foreskin in males
it has a crucial role in penile cancer development
it contains lysozymes, chymotrypsin, neutrophil elastase and cytokines
female smegma can be found between the labia
How many days does spermatogenesis take in the man?
16
32
64
90
What type of renal tubular acidosis (RTA) does demonstrate aldosterone resistance?
type 1
type 2
type 3
type 4
In utero, which hormone stimulates the development of Wolffian ducts?
estradiol
DHT
FSH
testosterone
What is the most likely cause of large scrotal hematoma in neonates?
clotting factor VIII deficiency
clotting factor IX deficiency
breech delivery
scrotal cavernous haemangioma
What is false concerning the urinary bladder anatomy?
as it distends, it peels off the peritoneum from the abdominal wall
the interureteric ridge is located between the 2 ureteric orifices and the uvula vesicae
Waldeyer`s sheath covers only the distal ureter and forms the deep trigone
in adults, it is percussible over the abdomen when contains at least 150 ml
The majority of circulating testosterone is:
bound to sex hormone-binding globulin
free
bound to α1-antichymotrypsin
bound to albumin
By which of the following structures, do the fused lower poles of hoarseshoe kidneys get trapped during embryologic ascent?
inferior mesenteric artery
superior mesenteric artery
celiac artery
common iliac artery
On tracing the IVU dye down, in a dilated ureter, the dilation stops at a level then continues as a normal calibre ureter. What could the pathology be?
lower ureteral stricture
ureteral valve
modified Lich-Gregoire ureteral reimplantation
residual dilation of hydroureter
Which of the following is NOT a part of the urogenital diaphragm structures?
perineal membrane
deep transverse perineal muscle
urethral sphincter
Camper`s fascia
Adult size of bladder capacity is achieved at what age?
5 6 yrs.
7 8 yrs.
9 10 yrs.
11 12 yrs.
What is the appropriate intravenous maintenance fluid for a 16 kg girl?
43 ml/hr of normal saline
78 ml/hr of ¼ normal saline
69 ml/hr of ½ normal saline
54 ml/hr of ¼ normal saline
Which statement is false concerning microhematuria?
malignancy is identified in patients presenting with microhematuria more than in patients presenting with gross hematuria
microscopic hematuria is defined as > 3 red blood cells per high powered field (RBC/hpf) on a single specimen
warrants full hematuria workup
history of cigarette smoking is of significance
What could cause autonomic dysreflexia?
full bladder or rectum
tooth extraction
hypertension medications
uncontrolled diabetes mellitus
What class of antibiotics might cause vestibular and/or auditory impairment?
aminoglycosides
αantipseudomonal penicillins
cephalosporins
fluoroquinolones
Which period of intrauterine life does the process of organ formation (organogenesis) take place?
9 12 weeks
12 15 weeks
15 18 weeks
18 21 weeks
Regarding renal ectopia, usually, the adrenals:
are cross ectopic
are at their normal position
travel with the kidneys
undergo ischemic atrophy