staghorn calculus

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Related to staghorn calculus: hydronephrosis


 [kal´ku-lus] (pl. cal´culi) (L.)
an abnormal concretion, usually composed of mineral salts, occurring within the body, chiefly in hollow organs or their passages. Called also stone. See also kidney stone and gallstone. adj., adj cal´culous.
biliary calculus gallstone.
bladder calculus vesical calculus.
bronchial calculus broncholith.
calcium oxalate calculus oxalate calculus.
dental calculus a hard, stonelike concretion, varying in color from creamy yellow to black, that forms on the teeth or dental prostheses through calcification of dental plaque; it begins as a yellowish film formed of calcium phosphate and carbonate, food particles, and other organic matter that is deposited on the teeth by the saliva. It should be removed regularly by a dentist or dental hygienist; if neglected, it can cause bacteria to lodge between the gums and the teeth, causing gum infection, dental caries, loosening of the teeth, and other disorders. Called also tartar.
gastric calculus gastrolith.
intestinal calculus enterolith.
lung calculus a hard mass or concretion formed in the bronchi around a small center of inorganic material, or from calcified portions of lung tissue or adjacent lymph nodes. Called also pneumolith.
mammary calculus a concretion in one of the lactiferous ducts.
nasal calculus rhinolith.
oxalate calculus a hard urinary calculus of calcium oxalate; some are covered with minute sharp spines that may abrade the renal pelvic epithelium, and others are smooth. Called also calcium oxalate calculus.
phosphate calculus a urinary calculus composed of a phosphate along with calcium oxalate and ammonium urate; it may be hard, soft, or friable, and so large that it may fill the renal pelvis and calices.
prostatic calculus a concretion formed in the prostate, chiefly of calcium carbonate and phosphate. Called also prostatolith.
renal calculus kidney stone.
staghorn calculus a urinary calculus, usually a phosphate calculus, found in the renal pelvis and shaped like the antlers of a stag because it extends into multiple calices.
urate calculus uric acid calculus.
urethral calculus a urinary calculus in the urethra; symptoms vary according to the patient's sex and the site of lodgment.
uric acid calculus a hard, yellow or reddish-yellow urinary calculus formed from uric acid.
urinary calculus a calculus in any part of the urinary tract; it is vesical when lodged in the bladder and renal (see kidney stone) when in the renal pelvis. Common types named for their primary components are oxalate calculi, phosphate calculi, and uric acid calculi. Called also urolith.
uterine calculus any kind of concretion in the uterus, such as a calcified myoma. Called also hysterolith and uterolith.
vesical calculus a urinary calculus in the urinary bladder. Called also bladder calculus.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

stag·horn cal·cu·lus

a calculus occurring in the renal pelvis, with branches extending into the infundibula and calices.
Farlex Partner Medical Dictionary © Farlex 2012
A concrement with broad arborescence that fills—and forms a radiologically visible ‘cast’ of—the renal pelvicaliceal system, often composed of magnesium ammonium phosphate, concentrated in the urine by urea-splitting bacteria—e.g., Proteus spp and some staphylococci—which induce urine alkalinisation and mineral precipitation. Staghorn calculi may also occur in hyperparathyroidism
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

stag·horn cal·cu·lus

(stag'hōrn kal'kyū-lŭs)
A calculus occurring in the renal pelvis, with branches extending into the infundibula and calyces.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
3 CT scan showing extent of the retroperitoneal hematoma (A) and the renal staghorn calculus (B)
Ultrasound of XGP shows an enlarged kidney, central echogenic foci, and multiple anechoic or hypoechoic areas with a staghorn calculus. Associated complications (such as psoas abscess, nephrocutaneous fistula, renocolonic fistula, and paranephric abscess) can be observed, as shown in Figure 8.
Computed tomography (CT) showed a horseshoe kidney with the right moiety containing a 3.4 x 3.9x 2-cm staghorn calculus with thinning of the renal parenchyma and lower pole hydronephrosis.
Out of which 21 patients (35%) had staghorn calculus, 21 patients (35%) had solitary calculus and 18(30%) had multiple calculi.
A 43-year-old woman was treated for staghorn calculus that extended into the upper, mid and lower pole infundibulae measuring 4.3 cm x 3.7 cm.
(1,2) The association of horseshoe kidney with staghorn calculus is rare.
DISCUSSION: At present, there is no clear threshold to define whether a staghorn calculus is amenable to open surgery or to minimally invasive procedure; and the surgeon's judgement, experience, and instrument availability are the important factors in this regard (2).