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April 2019 Issue

 




Other Radiology articles from the Thoracic Radiology section Thoracic Radiology

Mycotic pseudoaneurysm of the aortic isthmus secondary to salmonella infection causing a diagnostic dilemma by Syed Aftab et al.

Published: 2019 Apr
Issue: 13(4) :: Pages: 17-27


Free full text article: Mycotic pseudoaneurysm of the aortic isthmus secondary to salmonella infection  causing a diagnostic dilemma

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Abstract: Mycotic pseudoaneurysms usually arise from an infectious arteritis or mycotic aneurysms secondary to weakening and destruction of the arterial wall resulting in a contained rupture. We report a case of a mycotic pseudoaneurysm affecting the aortic isthmus of the thoracic aorta which is an extremely rare infection. To our knowledge no case report of mycotic pseudoaneurysm of the aortic isthmus secondary to salmonella infection has thus far been described. The specific case we present is also unique in that it posed a diagnostic imaging dilemma where the initial imaging revealed a periaortic mass which could not be accurately characterized and only on subsequent imaging reveal itself to be a thrombosed mycotic pseudoaneurysm. We hope that our case report highlights to the medical community the high degree of suspicion one should have regarding pseudoaneurysms when dealing with a complex mass intimately related to a vascular structure.


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Computed Tomography, Conventional Radiography, Table





Other Radiology articles from the General Radiology section General Radiology

A Multimodal and Pathological Analysis of a Renal Cell Carcinoma Metastasis to the Thyroid Gland 11 Years Post Nephrectomy by Thomas Rand Geisbush et al.

Published: 2019 Apr
Issue: 13(4) :: Pages: 1-9


Free full text article: A Multimodal and Pathological Analysis of a Renal Cell Carcinoma Metastasis to the Thyroid Gland  11 Years Post Nephrectomy

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Abstract: Thyroid lesions have a comprehensive differential diagnosis which include benign and malignant entities, such as metastases. However, metastases only account for a small percentage of thyroid lesions with renal cell carcinoma as the most common. Metastases to the thyroid pose a diagnostic dilemma as symptoms may not manifest for up to decades after removal of the renal cell carcinoma. Due to the nonspecific appearance on computed tomography and ultrasound, distinguishing metastases from primary thyroid malignancies is of the utmost importance for timely patient management. Our case demonstrates the importance of considering RCC metastases to the thyroid even years after nephrectomy to mitigate potential delays in diagnosis. We present the case of a 66-year-old male with a past medical history of renal cell carcinoma status post nephrectomy 11 years prior who demonstrated incidental thyroid abnormalities on positron emission tomography/computed tomography and ultrasound later confirmed as a metastasis of renal cell carcinoma.


Available image modalities: (click on modality to browse for other articles)
Nuclear Medicine, Ultrasound, Microscopic pathology, Computed Tomography, Table





Other Radiology articles from the Neuroradiology section Neuroradiology

Non-Enhanced CT Mimicking Contrast Enhanced CT - A Case Report on Polycythemia by Pooja Varwatte et al.

Published: 2019 Apr
Issue: 13(4) :: Pages: 10-16


Free full text article: Non-Enhanced CT Mimicking Contrast Enhanced CT - A Case Report on Polycythemia

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Abstract: Diffuse hyperdense cerebral vasculature is sometimes encountered on non-enhanced computed tomography, and polycythemia is one of the conditions which appears the same. The current case report is of a case of 37-year-old female patient arrived with a complaint of feeling severe headache for the past 3 days which was insidious in onset, diffuse in nature and it did not respond to any medication. NECT brain study showed the hyperdense circle of Willis and cerebral venous sinuses. Contrast was not administered for computed tomography study of the brain. On blood investigations, the patient had raised hematocrit level (74%). The hyperdense vessel was due to raised hematocrit (Polycythemia Vera).


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Computed Tomography, Table





Other Radiology articles from the Gastrointestinal Radiology section Gastrointestinal Radiology

Peritoneal Carcinomatosis Arising from Primary Anorectal Melanoma by Michelle McBride et al.

Published: 2019 Apr
Issue: 13(4) :: Pages: 28-37


Free full text article: Peritoneal Carcinomatosis Arising from  Primary Anorectal Melanoma

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Abstract: Anorectal melanoma is a rare and aggressive malignancy with a poor prognosis. Anorectal melanoma makes up approximately 1 to 3% of all anorectal malignancies. There are no known risk factors for anorectal melanoma. Patients frequently experience a delay in diagnosis due to multiple factors including nonspecific symptoms and misdiagnosis for other benign entities. Anorectal melanoma has a high potential for distant metastases and radiographic imaging plays a key role in evaluating for metastatic disease. Common sites for metastasis include pelvic lymph nodes, lungs, liver, skin, and brain. We present a case report of a 75 year old female with a history of transanal excision of primary anorectal melanoma who presented with increasing abdominal pain and distention. Computed tomography scan of the abdomen and pelvis showed metastatic disease to the peritoneum with findings of extensive peritoneal carcinomatosis, demonstrating the aggressive nature of anorectal melanoma.


Available image modalities: (click on modality to browse for other articles)
Microscopic pathology, Computed Tomography, Conventional Radiography, Ultrasound, Table





Other Radiology articles from the Musculoskeletal Imaging section Musculoskeletal Imaging

Difficult diagnosis of Angiomatoid Fibrous Histiocytoma of the leg mimicking a benign condition by Marco Colangeli et al.

Published: 2019 Apr
Issue: 13(4) :: Pages: 38-45


Free full text article: Difficult diagnosis of Angiomatoid Fibrous Histiocytoma of the leg mimicking a benign condition

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Abstract: Angiomatoid fibrous histiocytoma is a rarely metastasizing soft-tissue tumor of low-grade malignancy. Here we report a case of angiomatoid fibrous histiocytoma located in the leg of a 15-year-old female. This case is of particular interest due to its radiological features that led to raise two questions concerning the nature of the disease (is it reactive or tumoral?) and its site of origin (within soft tissues or the tibial periosteum?). Here we describe ultrasound, magnetic resonance imaging, computed tomography scan and positron emission tomography findings that helped answer these questions, understand the real nature of the disease and its appropriate treatment. This case shows that a single type of imaging technique may not be sufficient to understand the real nature of a musculoskeletal lesion and that it is necessary to combine all information derived from various imaging techniques in order to correctly diagnose and treat the disease.


Available image modalities: (click on modality to browse for other articles)
Magnetic Resonance Imaging, Ultrasound, Computed Tomography, Nuclear Medicine, Microscopic pathology, Table





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