Correction to: Magnetic resonance imaging features of the superior cervical ganglion and expected changes after radiation therapy to the head and neck in a long-term follow-up.

In the article "Magnetic resonance imaging features of the superior cervical ganglion and expected changes after radiation therapy to the head and neck in a long-term follow-up", one of the author names, K Chokkappan, was spelled incorrectly.

Clinics in diagnostic imaging (174). L5 vertebral superior facet osteoblastoma (OB).

A 25-year-old man presented with chronic low back pain and occasional radiation to the right lower limb. Magnetic resonance imaging and computed tomography (CT) of the lumbar spine showed an osteolytic expansile lesion with a central sclerotic nidus in the right superior facet of the L5 vertebra and surrounding marrow oedema. The diagnosis of osteoblastoma was made based on imaging findings and confirmed after CT-guided biopsy. Radiofrequency ablation of the lesion was successfully performed. The patient tolerated the procedure well and showed symptomatic relief. The imaging features and management of osteoblastoma are discussed.

Imaging Features of Sinonasal Inverted Papilloma: A Pictorial Review.

Computed tomography and magnetic resonance imaging are widely used for evaluation of patients with nasal masses, playing an integral role in their diagnosis and treatment. Inverted papilloma is a rare tumor of the sinonasal region that demonstrates characteristic imaging appearances. Preoperative diagnosis and precise tumor extent are essential for surgical planning as this tumor grows centrifugally and has high potential to recur following incomplete surgery. This pictorial review aims to illustrate the spectrum of imaging features of inverted papilloma and highlight the key features that are useful for making an accurate diagnosis of this condition. Common differential diagnoses are also discussed.

Diverticulitis of the appendix, a distinctive entity: preoperative diagnosis by computed tomography.

Diverticular disease of the appendix is rare and is usually diagnosed during surgery. We report a case of a 50-year-old man who presented to the emergency department with right lower quadrant pain of 1-day duration. A preoperative diagnosis of appendiceal diverticulitis was made by computed tomography of the abdomen. The patient underwent emergency laparoscopic appendectomy, which confirmed the diagnosis.

Technical note: CT-guided biopsy of lung masses using an automated guiding apparatus.

Automated guiding apparatuses for CT-guided biopsies are now available. We report our experience with an indigenous system to guide lung biopsies. This system gave results similar to those with the manual technique. Automated planning also appears to be technically easier, it requires fewer number of needle passes, consumes less time, and requires fewer number of check scans.