Incidental detection of bronchial carcinoid on Tc-99m sestamibi SPECT/CT myocardial perfusion scintigraphy

Incidentally detected diaphragmatic eventration as para-cardiac thoracic activity on myocardial perfusion imaging

Diaphragmatic eventration is the elevation of hemi-diaphragm without any disruption to diaphragmatic continuity which can be congenital or acquired. The most common acquired cause is phrenic nerve paralysis due to traumatic causes and is usually incidentally diagnosed on chest radiograph or computed tomography. We hereby report a case of a patient who had road traffic accident with fracture of the left proximal femur. Stress Myocardial Perfusion Imaging (MPI) done for pre-operative clearance showed an incidental tracer avidity adjoining to left myocardium in the thorax. It was confirmed on anatomical imaging to be gastric cavity uptake due to diaphragm eventration.

Increased 99mTc-Sestamibi Activity in Giant Cell Tumor of Bone

ABSTRACT

A 99mTc-sestamibi parathyroid scintigraphy was performed in a 27-year-old woman to evaluate possible hyperparathyroidism. The images did not identify any parathyroid abnormality. However, an intense activity was noted in the proximal left upper extremity, which was confirmed as giant cell tumor of the proximal left humerus by pathological examination.

Recurrent 99mTc Sestamibi Emboli in the Lungs Revealed on Consecutive Rest and Stress Single-Photon Emission Computed Tomography/Computed Tomography Myocardial Perfusion Images

Many causes of incidental focal uptake on raw data images using myocardial perfusion imaging, including malignant diseases, metastatic processes, benign pathologies, and physiological conditions, have been reported in the literature. However, iatrogenic ^99mTc sestamibi emboli have not yet been reported. Herein, we demonstrated iatrogenic ^99mTc sestamibi embolization on consecutive rest and stressed myocardial perfusion images at different locations.