Evidence Hub

Diagnostic challenge of pulmonary embolism during testosterone replacement therapy for primary hypogonadism

El Hadi H, Hölscher SD, Trebicka J, Vorona E

JCEM case reports, 2026

Abstract

Testosterone replacement therapy (TRT) is widely used in the management of male hypogonadism to restore physiological androgen levels and improve related symptoms. Although generally considered safe under appropriate monitoring, its association with pulmonary embolism (PE) remains controversial. We report a case of a 50-year-old man who independently and progressively shortened testosterone injection intervals due to recurrent hypogonadal symptoms. Despite the absence of overt cardiopulmonary symptoms, diagnostic workup revealed bilateral PE. This case highlights an atypical presentation of PE in a male patient receiving TRT, in whom nonspecific symptoms such as fatigue and reduced exercise tolerance were initially attributed to hypogonadism, potentially masking an underlying life-threatening thromboembolic event. It underscores the importance of periodic reassessment of TRT, clinical vigilance for thrombotic complications, and improved risk-stratification tools to guide monitoring and management.

How strong is the evidence?

Evidence Hub reads this as a case report, done in people. Its evidence level is 5 of 5 (Very low · case / narrative / animal / in vitro / in silico). Case reports, narrative reviews, and animal, cell or computer-model studies give the weakest evidence for human health.

How the five levels of evidence work. The level is assigned automatically from the abstract and can be wrong, so check the paper.

Read the paper

Related studies

Go deeper in Evidence Hub

Evidence Hub adds a study data sheet (design, sample size, evidence level, key numbers), an AI summary and a chat grounded in the paper's text.

Open this study Sign up free