Maja Hrabak

Teaching research methodology in medical schools: students' attitudes towards and knowledge about science

Objective  To explore the relationship between teaching scientific methodology in Year 2 of the medical curriculum and student attitudes towards and knowledge about science and scientific methodology.

Academic misconduct among medical students in a post-communist country

Aim  To assess the prevalence of, attitudes towards and willingness to report different forms of academic dishonesty among medical students in a post‐communist transitional country.

Cross-sectional imaging of the pelvic tumors and tumor-like lesions in gynecologic patients—misinterpretation points and differential diagnosis

Computed tomography and/or magnetic resonance imaging were performed in 42 female patients with suspected pelvic mass. Surgical and histopathological reports were compared to the imaging findings, yielding mismatch in five (17.8%) patients. One benign cyst and one case of postirradiation fibrosis were characterized as recurrent tumors, one surgically transposed ovary as metastasis, and an ovarian torsion as ovarian tumor, and a pelvic hematoma was mistaken for abscess. The most common false-positive finding on a per-lesion basis was that of enlarged lymph nodes.

EWING’S SARCOMA OF THE THIRD METATARSAL: A CASE REPORT AND REVIEW OF THE LITERATURE

We report a rare case of Ewings sarcoma involving the third metatarsal bone and spreading into adjacent bone in a 23-year-old man, with special emphasis on imaging characteristics. On radiographs the tumor presented as a permeative lytic lesion with aggressive periosteal reaction and cortical destruction. Computed tomography and magnetic resonance imaging delineated the osseous and soft tissue extent of the tumor. A large soft-tissue mass around the involved bone was highly indicative of Ewings sarcoma. Cortical invasion of the neighboring second metatarsal was seen only on magnetic resonance imaging. Increased up-take of technetium 99m methylene diphosphonate was noticed on bone scintigraphy. An early diagnosis of Ewings sarcoma, even when it occurs in unusual locations, is necessary for adequate treatment and is of particular importance in terms of prognosis. The optimal imaging modality for the diagnosis of Ewings sarcoma is magnetic resonance imaging since it allows accurate analysis of the soft-tissue component and visualization of possible local invasion of adjacent structures.

Multidetector computed tomography of iatrogenic urinary trauma – pictorial review

Abdomino-pelvic interventional and surgical procedures can result in iatrogenic urinary tract injury. Radiological diagnosis can be difficult to establish because findings are caused by iatrogenic trauma, and by underlying disease and therapeutical procedures. We performed multidetector computed tomography (MDCT) in patients with suspected urinary tract trauma with scanning protocol selected according to the suspected type of injury: non-enhanced scanning for detection of fluid collections, MDCT angiography for renal parenchymal and vascular changes, MDCT urography for pelvicalyceal and ureteric injuries, and MDCT cystography for bladder and urethral lesions. The injuries were found after urologic, general surgical and gynaecological/obstetric procedures. Renal parenchymal injuries were caused by blunt (extracorporeal shock-wave lithotripsy) or penetrating trauma (renal biopsy), with formation of subcapsular, perinephric and/or paranephric haematomas. Renal vascular pedicle changes after kidney transplantation were precisely defined using MDCT angiography. MDCT urography depicted leakage of contrast material from the pelvicalyceal system after nephron-sparing surgery, from the ureter after kidney transplantation, and from bladder tear after caesarean section, while urethral injury after bladder catheterization was diagnosed using MDCT cystography. MDCT angiography and/or MDCT urography present methods for evaluation of iatrogenic urinary tract trauma because they enable fast and accurate diagnosis and planning of surgical and interventional procedures.