Unilateral adrenal tuberculosis whose computed tomography imaging characteristics mimic a malignant tumor:A case report

BACKGROUND Adrenal tuberculosis usually presents with bilateral involvement. It has special characteristics in computed tomography(CT) images, such as small size, low attenuation in the center, and peripheral rim enhancement, which differ from those of primary tumors.CASE SUMMARY A 42-year-old female presented to the hospital with low back pain. She had been diagnosed with hypertension as well as pulmonary and cerebral tuberculosis but denied having any fever, fatigue, anorexia, night sweats, cough, or weight loss. Abdominal CT revealed an irregular 6.0 cm × 4.5 cm mass with uneven density in the right adrenal gland, while the left adrenal gland was normal. No abnormalities were observed in plasma total cortisol(8 am), adrenocorticotropic hormone, aldosterone/renin ratio, blood catecholamines, or urine catecholamines. A fineneedle aspiration biopsy of the right adrenal gland provided evidence of tuberculosis. After three years of anti-tuberculosis treatments, the large mass in the right adrenal gland was reduced to a slight enlargement.CONCLUSION This is a case of unilateral adrenal tuberculosis with CT imaging characteristics mimicking those of a malignant tumor. Extended anti-tuberculosis therapy is recommended in such cases.