RESUMO
Extrameduallary plasmacytoma of ovary is extremely rare. We report a case of involvement of ovary in a treated case of plasmacytoma of 2(nd) part of duodenum, which was initially thought to be physiological luteal activity. However, follow up whole body FDG PET-CT scan shows appearance of metabolically active soft tissue mass in left adnexal region which confirmed to be extra-medullary plasmacytoma of ovary on histopathology.
RESUMO
We present 4 cases of cosmetic-related changes on 18F-FDG PET/CT. These cases represent post-treatment changes from facial juvederm injection, silicone injection in the chest wall and gluteal areas, paraffin injection in the gluteal region, and liposuction. Recognition of cosmetic-related changes and their appearance on PET and CT will help to avoid potential false-positive interpretations.
Assuntos
Fluordesoxiglucose F18 , Imagem Multimodal , Tomografia por Emissão de Pósitrons , Cirurgia Plástica , Tomografia Computadorizada por Raios X , Adulto , Reações Falso-Positivas , Feminino , Humanos , Masculino , Pessoa de Meia-IdadeAssuntos
Lipossarcoma/patologia , Osteossarcoma/diagnóstico por imagem , Fluordesoxiglucose F18 , Humanos , Lipossarcoma/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , Tomografia por Emissão de Pósitrons , Espaço Retroperitoneal/diagnóstico por imagem , Tomografia Computadorizada por Raios XAssuntos
Neoplasias do Endométrio/patologia , Fluordesoxiglucose F18 , Neoplasias Musculares/diagnóstico , Neoplasias Musculares/secundário , Tomografia por Emissão de Pósitrons , Tomografia Computadorizada por Raios X , Idoso , Neoplasias do Endométrio/diagnóstico por imagem , Feminino , Humanos , Neoplasias Musculares/diagnóstico por imagemRESUMO
We report the PET-CT appearance of a metastasis from a primary colon cancer to the right kidney in an 84-year-old woman with a history of moderately differentiated adenocarcinoma of the cecum. The patient underwent right hemicolectomy and chemotherapy. Restaging PET-CT study, 4 months after her last chemotherapy, demonstrates a hypermetabolic soft-tissue mass in the inferior pole of the right kidney. The patient subsequently had a right partial nephrectomy. The pathology was consistent with metastatic colonic adenocarcinoma. Renal metastasis from primary colon cancer is very rare.
Assuntos
Neoplasias do Colo/diagnóstico por imagem , Neoplasias do Colo/patologia , Fluordesoxiglucose F18 , Neoplasias Renais/diagnóstico por imagem , Neoplasias Renais/secundário , Idoso de 80 Anos ou mais , Feminino , Humanos , Tomografia por Emissão de Pósitrons , Tomografia Computadorizada por Raios XRESUMO
We report the F-18 FDG PET-CT appearance of recurrent gliosarcoma (GS) with extracranial extension in a 47-year-old man who underwent surgical resection of a right frontal GS 5 months earlier. F-18 FDG PET demonstrated moderate uptake in the recurrent disease. GS is a very rare, biphasic primary neoplasm of the central nervous system, composed of glioblastoma multiforme mixed with a sarcomatous component. It occurs in adults of middle age and carries a poor prognosis. The median survival reported is less than a year. The results suggest that F-18 FDG PET imaging may be useful in detecting recurrent GS.
Assuntos
Neoplasias Encefálicas/diagnóstico por imagem , Fluordesoxiglucose F18 , Gliossarcoma/diagnóstico por imagem , Neoplasias Encefálicas/patologia , Gliossarcoma/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Tomografia por Emissão de Pósitrons , Recidiva , Tomografia Computadorizada por Raios XRESUMO
We report F-18 FDG PET-CT appearance of biopsy-proven intramuscular myxoma (IM) in a 69-year-old woman who presented with a left thigh mass. The tumor appears as a well-defined, hypodense mass with thin septation on CT images and mild uptake on PET images. IMs are rare benign myxoid tumors characterized by a paucity of cells, diminished vascularity, and minimal mitotic figures. They most often present as slow-growing, painless, deep-seated intramuscular masses. The mainstay of treatment is surgical resection.
Assuntos
Diagnóstico por Imagem/métodos , Fluordesoxiglucose F18 , Mixoma/diagnóstico por imagem , Tomografia por Emissão de Pósitrons/métodos , Compostos Radiofarmacêuticos , Neoplasias de Tecidos Moles/diagnóstico por imagem , Coxa da Perna/diagnóstico por imagem , Tomografia Computadorizada por Raios X/métodos , Idoso , Biópsia , Feminino , Humanos , Mitose , Mixoma/diagnóstico , Neoplasias de Tecidos Moles/diagnósticoAssuntos
Condrossarcoma/diagnóstico , Condrossarcoma/patologia , Fluordesoxiglucose F18 , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/secundário , Metástase Linfática/diagnóstico , Idoso , Condrossarcoma/diagnóstico por imagem , Humanos , Neoplasias Pulmonares/diagnóstico por imagem , Metástase Linfática/diagnóstico por imagem , Masculino , Tomografia por Emissão de Pósitrons , Tomografia Computadorizada por Raios XRESUMO
We report the PET-CT appearance of a high-grade prostatic urothelial carcinoma in a 68-year-old man with a long history of urothelial carcinoma. The patient was initially diagnosed with urothelial carcinoma in the left ureter, status postleft nephrourethrectomy. He was subsequently, 11 years later, diagnosed with low-grade urothelial carcinoma involving the bladder for which he received monthly Bacillus Calmette-Guerin treatment. Three months after the diagnosis of the bladder tumor, he was found to have biopsy-proven high-grade urothelial carcinoma of the prostate for which he was referred to have a PET-CT scan to evaluate for distant metastasis.
Assuntos
Fluordesoxiglucose F18 , Neoplasias da Próstata/diagnóstico , Neoplasias da Próstata/secundário , Neoplasias Urológicas/diagnóstico , Urotélio/diagnóstico por imagem , Idoso , Humanos , Masculino , Tomografia por Emissão de Pósitrons/métodos , Compostos Radiofarmacêuticos , Técnica de Subtração , Tomografia Computadorizada por Raios X/métodosAssuntos
Adenocarcinoma/patologia , Neoplasias da Mama/diagnóstico por imagem , Neoplasias da Mama/secundário , Neoplasias Pulmonares/patologia , Tomografia por Emissão de Pósitrons , Tomografia Computadorizada por Raios X , Adenocarcinoma/diagnóstico por imagem , Idoso , Humanos , Neoplasias Pulmonares/diagnóstico por imagem , MasculinoRESUMO
We report the PET-CT appearance of sclerotic bone mimicking active bone metastasis in a 57-year-old woman with right breast cancer and bone and hepatic metastases. Hybrid PET-CT was performed 1 month after completion of surgery and chemoradiation treatment. PET-CT demonstrated hypermetabolic foci in the right pulmonary hilum and liver. Increased hypermetabolic activity in L1 and L3 vertebral bodies was also seen corresponding to sclerotic vertebral bodies on CT study. The activity in L1 and L3 vertebral bodies was not visualized on nonattenuation-corrected images, consistent with an attenuation correction artifact resulting from extensive sclerosis in these regions.
