Pulmonary mucormycosis is a life-threatening opportunistic mycosis that is difficult to diagnose early. We report the case of a 56-year-old woman who complained of intermittent fever in the afternoon and productive cough and pain on the right side of the chest. Her clinical condition deteriorated despite antibiotherapy. FDG PET/CT showed a heterogeneous soft tissue mass at the lower part of the right lung with obvious FDG uptake in the peripheral part of the mass. Mucormycosis was proven by histopathology and fungal culture from the transbronchial lung biopsy materials.
Kimura disease is a chronic inflammatory disorder that occurs mainly in Asians. We present a patient with pulmonary Kimura disease assessed by whole-body 18F-FDG PET/CT examination and proved by pathologic findings. Chest x-ray detected left pulmonary hilum enlargement in a 49-year-old Chinese man. CT showed a soft tissue mass with punctate calcifications in the left pulmonary hilum, which obviously and homogeneously accumulated tracer on FDG PET. Histopathology findings showed characteristic of Kimura disease. Kimura disease should be included in the differential diagnosis of a pulmonary hilar tumor.
Testicular lymphoma is a rare extranodal presentation of nonHodgkin lymphoma. The most common type is diffuse large B-cell lymphoma. A 58-year-old man presented with painless enlargement of bilateral scrotums for about 6 months and a mass in the left neck for a month. The patient underwent an F-18 FDG PET/CT scan to evaluate the situation. The PET/CT scan demonstrated intense hypermetabolic activity in the bilateral enlarged testes, enlarged left adrenal gland, and multiple enlarged lymph nodes in the left neck, retroperitoneum, and bilateral inguinal region. Subsequent radical orchiectomy and pathologic examination revealed a large B-cell lymphoma infiltrating the testicular parenchyma.
A 74-year-old man with right upper eyelid swell accepted FDG PET/CT examination, which showed an intensely FDG-avid soft tissue nodular mass within the eyelid. It was suggestive of malignancy. There was no evidence of active neoplastic disease elsewhere. The nodule was excised by surgery. Histopathological findings showed characteristic findings of diffuse large B-cell lymphoma. This case highlights the utility of FDG PET/CT in identifying rare types of lymphoma.
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