This tag is associated with 23 posts

Children versus Adults – Who is more sensitive to radiation?

Almost all parents at some point during their children’s lives will need to take their child to the hospital for some sort of illness. Whether it is a cough, fever, broken bone, or abdominal pain, a visit to the emergency room or urgent care will include some sort of radiology study and often that radiology … Continue reading

Using Ionizing Radiation in Children – What do you know?

I’m curious to understand what the readers of radiologypics.com know about ionizing radiation, so I’ve created a few questions that I’d like to get your answers to below.

Wilms’ Tumor

History: 3 year old male with palpable left sided abdominal mass Wilms’ tumor is the most common renal malignancy and solid abdominal malignancy of childhood. The median age of patients affected by Wilms’ tumor is 3 years old. Usually Wilms’ tumor presents as a large abdominal mass, and 10% of cases are bilateral. Wilms’ tumor … Continue reading

Sinonasal Osteosarcoma

History: 9 year old boy with nasal congestion and epistaxis (bloody nose) Osteosarcoma uncommonly arises in craniofacial bones, but when it does it occurs most often in bones of the jaw and has only very rarely been reported to arise in the nasal cavity or paranasal sinuses as a primary tumor. Most sinonasal osteosarcomas are high grade. … Continue reading

Metastatic Neuroblastoma

History: 6 year old male with abdominal pain Unfortunately, this is a case of metastatic neuroblastoma in a 6 year old male which was diagnosed initially on MRI. Neuroblastoma is the most common extracranial solid malignancy in children, and the third most common overall cancer in children. They most commonly arise from the adrenal medulla … Continue reading

Right Upper Lobe Lung Cancer with Rib Metastasis

History: Middle aged man with a history of smoking, cough, and chest pain.  This is a case of Lung Cancer with a metastasis to the contralateral ribs. Any spiculated lung mass in a patient with a history of smoking should be considered lung cancer until proven otherwise. Read this article here regarding the differential diagnosis … Continue reading

The Golden S Sign – Right Upper Lobe Collapse

History: middle aged female with cough.  This is a nice example of right upper lobe collapse and the classic Golden S sign, which is the elevated minor fissure convex inferiorly on the proximal/medial portion and concave inferiorly on the distal or lateral portion. This sign is classically seen with post-obstructive atelectasis due to a central … Continue reading

Solution to Unknown Case #32 – Prostate Metastases To Bone

History: 70 year old male with hip pain.  This is a case of metastatic prostate cancer to bone. Prostate cancer metastases are usually sclerotic (also called osteoblastic), leading to increased opacity on x-rays and CT scans. Prostate cancer metastases also have a preference for the axial skeleton over the appendicular skeleton. The gold standard for determining … Continue reading

Solution to Unknown Case #27 – Klatskin Tumor

History: 65 year old male with jaundice.  This is a Klatskin tumor causing bile duct obstruction and biliary dilatation. A Klatskin tumor is a cholangiocarcinoma that arises at near the confluence of the right and left hepatic ducts and causes obstruction of bile duct outflow, leading to biliary dilatation as seen in the second image … Continue reading

Solution to Unknown #26 – Metastatic Melanoma to Gallbladder

History: 50 year old female with melanoma.  This is a case of metastatic malignant melanoma to the gallbladder. Melanoma is the most common cancer to metastasize to the gallbladder, and it usually occurs in the setting of widespread metastatic disease. Melanoma metastases are usually hyperenhancing. The differential diagnosis in this case would include other causes … Continue reading