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A Case of a False-Positive Urine Pregnancy Test and Delayed Diagnosis of Obstructive Pyelonephritis.
Am J Case Rep. 2020 Mar 25; 21:e920440.AJ

Abstract

BACKGROUND

Urine pregnancy tests are usually performed by women at home and also by healthcare professionals. However, there are several conditions that may cause a false-positive urine pregnancy test, including trophoblast tumors, malignancy, nephrotic syndrome, adenomyosis, tubo-ovarian abscess, and paraneoplastic syndromes. A case is presented of a false-positive urine pregnancy test in a 28-year-old woman with a history of tubal ligation, who had a delayed diagnosis of obstructive pyelonephritis due to renal calculus. CASE REPORT A 28-year-old woman had previously been sterilized by tubal ligation. She presented with acute pyelonephritis associated with a left staghorn renal calculus and was found to have a false-positive urine pregnancy test, which delayed the diagnosis and management of her acute pyelonephritis. On follow-up, she had a negative serum pregnancy test. Abdominal computed tomography (CT) identified a left-sided staghorn calculus resulting in partial ureteric obstruction and hydronephrosis. She was treated with antibiotics, including cefazoline, and a left nephrostomy tube was sited to treat her hydronephrosis. Her pain was initially managed with acetaminophen and hydrocodone. Four days after her initial hospital admission, the patient was stable enough to go home on oral levofloxacin and pain medication.

CONCLUSIONS

This case of a false-positive urine pregnancy test in a 28-year-old woman with a history of tubal ligation highlights that this association may result in the delay in the diagnosis and treatment of acute pyelonephritis.

Authors+Show Affiliations

College of Medicine, University of Toledo College of Medicine, Toledo, OH, USA.College of Medicine, University of Toledo College of Medicine, Toledo, OH, USA.Department of Internal Medicine, University of Toledo, Toledo, OH, USA.Department of Internal Medicine, University of Toledo, Toledo, OH, USA.

Pub Type(s)

Case Reports

Language

eng

PubMed ID

32210220

Citation

Mital, Rahul, et al. "A Case of a False-Positive Urine Pregnancy Test and Delayed Diagnosis of Obstructive Pyelonephritis." The American Journal of Case Reports, vol. 21, 2020, pp. e920440.
Mital R, Forster M, Alloghbi A, et al. A Case of a False-Positive Urine Pregnancy Test and Delayed Diagnosis of Obstructive Pyelonephritis. Am J Case Rep. 2020;21:e920440.
Mital, R., Forster, M., Alloghbi, A., & Kayyali, A. (2020). A Case of a False-Positive Urine Pregnancy Test and Delayed Diagnosis of Obstructive Pyelonephritis. The American Journal of Case Reports, 21, e920440. https://doi.org/10.12659/AJCR.920440
Mital R, et al. A Case of a False-Positive Urine Pregnancy Test and Delayed Diagnosis of Obstructive Pyelonephritis. Am J Case Rep. 2020 Mar 25;21:e920440. PubMed PMID: 32210220.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A Case of a False-Positive Urine Pregnancy Test and Delayed Diagnosis of Obstructive Pyelonephritis. AU - Mital,Rahul, AU - Forster,Moriah, AU - Alloghbi,Abdurahman, AU - Kayyali,Ammar, Y1 - 2020/03/25/ PY - 2020/3/27/entrez PY - 2020/3/27/pubmed PY - 2021/1/6/medline SP - e920440 EP - e920440 JF - The American journal of case reports JO - Am J Case Rep VL - 21 N2 - BACKGROUND Urine pregnancy tests are usually performed by women at home and also by healthcare professionals. However, there are several conditions that may cause a false-positive urine pregnancy test, including trophoblast tumors, malignancy, nephrotic syndrome, adenomyosis, tubo-ovarian abscess, and paraneoplastic syndromes. A case is presented of a false-positive urine pregnancy test in a 28-year-old woman with a history of tubal ligation, who had a delayed diagnosis of obstructive pyelonephritis due to renal calculus. CASE REPORT A 28-year-old woman had previously been sterilized by tubal ligation. She presented with acute pyelonephritis associated with a left staghorn renal calculus and was found to have a false-positive urine pregnancy test, which delayed the diagnosis and management of her acute pyelonephritis. On follow-up, she had a negative serum pregnancy test. Abdominal computed tomography (CT) identified a left-sided staghorn calculus resulting in partial ureteric obstruction and hydronephrosis. She was treated with antibiotics, including cefazoline, and a left nephrostomy tube was sited to treat her hydronephrosis. Her pain was initially managed with acetaminophen and hydrocodone. Four days after her initial hospital admission, the patient was stable enough to go home on oral levofloxacin and pain medication. CONCLUSIONS This case of a false-positive urine pregnancy test in a 28-year-old woman with a history of tubal ligation highlights that this association may result in the delay in the diagnosis and treatment of acute pyelonephritis. SN - 1941-5923 UR - https://www.unboundmedicine.com/medline/citation/32210220/A_Case_of_a_False-Positive_Urine_Pregnancy_Test_and_Delayed_Diagnosis_of_Obstructive_Pyelonephritis. L2 - https://www.amjcaserep.com/download/index/idArt/920440 DB - PRIME DP - Unbound Medicine ER -