Rising use of diagnostic imaging in Australia: An analysis of Medicare-funded radiology services between 2000 and 2021.

Introduction: The use of diagnostic imaging services is increasing worldwide. This has important impacts on healthcare resource allocation and potential risks to the population. This study aimed to quantify trends in medical imaging in Australia over the past two decades.

The impact of the COVID-19 pandemic on diagnostic imaging services in Australia.

Introduction: The COVID-19 pandemic is driving unprecedented changes in healthcare services worldwide. This study aimed to quantify the impact of the first wave of the COVID-19 pandemic on diagnostic imaging services in Australia using an interrupted time series model.

Methods: Monthly data were extracted from the Australian Medicare Benefits Schedule for all diagnostic imaging services performed between January 2016 and December 2019.

Opercular perivascular cysts: A proposed new subtype of dilated perivascular spaces.

Purpose: Dilated perivascular spaces are a common finding on brain MRI, traditionally classified into three types based on location and relationship to vessels. Recent studies have characterised an additional variant of dilated perivascular spaces that arise within the anterior temporal lobe and have unique neuroimaging features. These particular perivascular spaces are associated with a vascular loop of a branch of the middle cerebral artery (MCA) and commonly demonstrate perilesional T2/FLAIR signal.

Pernicious azotaemia? A case series of subacute combined degeneration of the cord secondary to nitrous oxide abuse.

Nitrous oxide abuse is a rare cause of vitamin B12 deficiency and consequent subacute combined degeneration of the spinal cord. Worldwide and Australian statistics indicate that recreational use of nitrous oxide is increasing. We report four cases of females aged 18-24 years presenting with clinical symptoms of subacute combined degeneration of the spinal cord.

Extraosseous Ewing sarcoma arising in a chronically lymphedematous limb.

Ewing sarcoma is a highly aggressive small round cell malignant neoplasm of bone and soft tissue that typically is manifested in children and young adults. It is most commonly a primary bone tumor; however, extraosseous cases have been increasingly reported. We report a case of metastatic extraosseous Ewing sarcoma with the primary lesion occurring within a limb affected by primary lymphedema.

Rare "Inverted" Verrucous Carcinoma (Carcinoma Cuniculatum) of the Sacrogluteal Region: Case Report and Literature Review.

A 49-year-old woman with a past history of several infundibular cysts in the head and neck region presented with a 6-month history of a nonhealing perianal abscess on a background of 13 years of chronic sacral-buttock abscesses and discharging sinuses as part of hidradenitis suppurativa. After 2 surgical procedures and inadequate healing, a wide local excision was performed. The surgical specimen revealed an extensive, infiltrating, cystic and deeply penetrating, dermal and subcutaneous neoplasm with multiple fistulous tracts extending to the skin surface.