Violence against radiologists. I: Prevalence and preventive measures.

PURPOSE: Violence in the workplace is a specific risk for healthcare workers. Radiologists, especially when involved in emergency services, share that risk. Very few studies in the literature have researched this topic. This study aimed to evaluate the prevalence of violent behaviour in a large sample of Italian radiologists and analyse the phenomenon and its consequences with a view to proposing preventive measures. MATERIALS AND METHODS: A total of 992 radiologists (61.5% men) taking part in a national radiology congress agreed to respond to a questionnaire on violence that contained the Violent Incident Form by Arnetz for the description of violent incidents in healthcare practice. RESULTS: Some 6.8% of radiologists in public hospitals experienced physical abuse in the previous 12 months, for the most part from patients or their companions. The prevalence of physical abuse is greatest among younger healthcare individuals with less clinical experience, with no differences between sexes. Among younger radiologists, one in five suffered at least one act of physical abuse in a working year. Nonphysical violence is more widespread and throughout radiologists' working lives affects 65.2% of them. In this case, almost half of the violent incidents originate from colleagues. A total of 5.5% of respondents stated that they were victims of abuse at the time of the survey. In most cases, the violent incidents remain unreported. The immediate consequences of violence in the workplace are emotions such as anger, disappointment, humiliation, anxiety, fear, distress, a feeling of helplessness and isolation, occasionally a feeling of guilt or of having done wrong and a desire to take revenge, change behaviour or change workplace. CONCLUSIONS: The extent of the problem calls for the adoption of a series of measures aimed at eliminating the causes of the various forms of workplace violence.

Clinical Risk Management in radiology. Part II: applied examples and concluding remarks.

With the aim of providing a clearer understanding of the tools used for evaluating risk in the radiological setting and how they are applied, this second part presents two practical examples. The first is a proactive analysis applied to CT, whereas the second is a reactive analysis performed following a sentinel event triggered by a CT study allocated to the wrong patient in the RIS-PACS system.

Clinical Risk Management in radiology. Part I: general background and types of error and their prevention.

The present contribution, presented as an Editorial, addresses the issue of patient safety in Radiology: this topic, of great current National and Regional interest, has stimulated a strong focus on accidents and mistakes in medicine, together with the diffusion of procedures for Risk Management in all health facilities. The possible sources of incidents in the radiological process are exposed, due to human errors and to system errors connected both to the organization and to the dissemination of Information Technology in the Radiological world. It also describes the most common methods and tools for risk analysis in health systems, together with some application examples presented in Part II.

Analysis of malpractice claims in mammography: a complex issue.

PURPOSE: The aim of this study was to analyse malpractice claims in mammography, estimate the specific risk of future claims and assess their impact on radiologists and society. MATERIALS AND METHODS: The study considered insurance claims filed by radiologists of the Italian Society of Medical Radiology (SIRM) over a 12.5-year period between 1 January 1993 and 30 June 2005. We isolated claims related to presumed diagnostic errors in mammography. We then estimated the number of claims arising from events in the study period that are expected to be filed over the next few years, before the expiration of the prescriptive period of 10 years. RESULTS: The total number of claims was 1,088. Of these, 302 were caused by alleged diagnostic errors in cases of cancer; 189 (62%) concerned breast cancers and mammographic technique. Assuming a constant frequency of claims filed by radiologists, we expect a further 637 claims relating to the study period, for a total of 1,725 claims, with 178 claims being related to breast imaging. The predicted rate therefore increases to 10.5 per thousand, equal to a risk of one litigation per radiologist per 10 years of work. CONCLUSIONS: The analysis uncovered a complex problem: although radiologists save many lives through the radiographic diagnosis of breast cancer and consequently contribute to the welfare of society, in practice, they can face real or alleged errors, with serious judicial consequences. Awareness of professional risk in current society may represent a valuable reference for choosing and planning to work in radiology.

The legal implications of error in radiology.

Evaluation of the legal implications of error in radiology and therefore the assessment of criminal and civil liability in the practice of the profession requires an analysis of how the public perception of the right to health has radically changed. This change has initiated a defensive approach to medicine and radiology that tends to be oriented towards precautionary measures, with a proliferation of often unnecessary imaging studies. In radiology, errors of omission or commission are frequent. A critical appraisal of the different types of error in radiology will help practitioners undertake the essential corrective measures. Through analysis of several cases derived from legal or insurance proceedings brought against radiologists, the most common forms of error are described, and their implications for criminal and civil liability are illustrated, although it is emphasised that the existence of an error does not always translate into the presence of malpractice.

Systematic approach to human error in radiology.

We propose a systematic approach to human errors in radiology. We consider perceptual, cognitive and system errors. Practical aspects with psychological and clinical involvement are discussed with tree diagrams.

Juxtaglomerular cell tumor of the kidney.

A juxtaglomerular cell tumor (JGCT) was found in a 40 year old woman. For 5 years she had mild hypertension, responding to classical anti-hypertensive treatment, then she became severely hypertensive. Two renal angiographies and a CT scan were reported as normal. A second CT scan and third selective renal angiography were diagnostic, associated with lateralization of renin in renal vein measurement. Light, electron microscopy and immunohistochemistry of the resected tumor confirmed the diagnosis of renin-secreting juxtaglomerular cell tumor of the kidney.

[A multicenter study for the evaluation of the diagnostic efficiency of mammography and echography in nonpalpable breast neoplasms]. / Studio multicentrico per la valutazione dell'efficacia diagnostica della mammografia e dell'ecografia nelle neoplasie mammarie non palpabili.

The Breast Section of the Italian Society of Radiology set up a cooperative study which included 17 Departments of Radiology and Breast Diagnosis in order to evaluate the diagnostic accuracy of US versus mammography in nonpalpable breast lesions. From January 1, 1989 to december 31, 1990, 400 nonpalpable breast lesions (142 benign lesions, 59 in situ and 199 infiltrating carcinomas) were detected by mammography and/or US; they had questionable/suspicious findings which called for further investigation by means of cytology and/or histology. US proved much less sensitive in non-palpable carcinomas than mammography (49.2% vs 93.8%), also in younger women, and failed to detect 50% of the benign/malignant nonpalpable lesions identified by mammography. US sensitivity was directly related to lesion diameter and probe frequency: 38.7% in infiltrating carcinomas < or = 5 mm vs 56.8% in those > 10 mm; 12% in the patients examined with a 5-MHz probe vs 57.7% in those examined with a > or = 7.5-MHz probe. Furthermore, the most significant US patterns of nonpalpable lesion were irregular contours, posterior attenuation and irregular internal echoes, while an irregular skin line and Cooper ligaments had no significant relation with carcinoma. Thus, breast US cannot be used as a screening test on asymptomatic patients not even on young women with radiologically dense breasts. On the contrary, US performed with high-frequency probes is useful in the assessment of nonpalpable lesions identified by mammography, and allows, in many cases, US-guided cytology and preoperative localization.

[A comparison between echography and computed tomography in assessing neoplastic recurrences in superficial soft tissues]. / Confronto tra ecografia e tomografia computerizzata nella valutazione delle recidive neoplastiche dei tessuti molli superficiali.

Thirty-seven superficial soft-tissue recurrences were evaluated with ultrasonography (US) and computed tomography (CT) to assess the correct diagnostic approach. US and CT examinations were performed at the same time. High-frequency US probes and a third-generation CT scanner were employed; all the lesions underwent also histology or cytology. US correctly identified as recurrences or fibrous tissue all the 37 lesions, whereas CT diagnosed 30 lesions only. Seven of the 14 recurrences < 2 cm diameter were not demonstrated. In conclusion, US provides more reliable information than CT relative to small lesions, which suggests that US must be performed just after therapy. Nevertheless, when bone involvement is suspected, CT is required and its use is also suggested to monitor distant metastases.

[Quality control of stereotaxic cytologic test of non-palpable lesions of the breast]. / Controllo della qualità dell'esame citologico stereotassico delle lesioni non palpabili della mammella.

The authors compare the accuracy and other indicators of efficiency of ten centers (1,784 total cases) performing stereotaxic cytology and adhering to a multicentric study aimed at validating a quality control system for this diagnostic procedure. The results from single centers were compared with average results. No significant differences were observed for most centers from the average sensitivity (86%), specificity (91%), positive predictive value of a dubious (57%) or positive (96%) cytologic report, inadequacy rate on malignant (6%) or benign (11%) lesions, and benign/malignant biopsy ratio (0.63). Some significant differences from the average values indicated the need for some centers to review different phases of the diagnostic process, namely to verify the accuracy of sampling sites (low sensitivity with good specificity and predictivity), to review the criteria for cytologic diagnosis (specificity less than 90%, low predictive value or higher predictive value for dubious compared with positive reports), to optimize the impact of cytology on the final decision (lack of reduction of benign/malignant biopsy ratio). Periodic check of the above parameters is proposed as a routine quality control of this diagnostic procedure.

[Echography, computerized tomography and retrograde cholangiopancreatography for the diagnosis of focal pathology of the exocrine pancreas]. / L'ecografia, la tomografia computerizzata e la colangiopancreatografia retrograda nella diagnostica della patologia focale del pancreas esocrino.

In spite of the improved imaging techniques currently available, mortality for pancreatic cancer is still high, and pancreatitis is often diagnosed only in its advanced stages. The authors investigated the value of different imaging techniques--i.e., US, CT, and ERCP--for an early diagnosis, when a more effective (curative?) treatment can be suggested. Fifty-six cases of pancreatic cancer and 36 cases of chronic pancreatitis were evaluated. The results indicate that ERCP, with the help of statistical methods, is superior to US and CT not only in evaluating early neoplastic or inflammatory lesions, but also for their differential diagnosis. In the latter case, ERCP can sometimes be used as a valid alternative to fine-needle aspiration biopsy.

Pancreatic cancer: CT scan.

The results of 72 cases of histologically confirmed pancreatic neoplasm are reviewed. By applying a semeiological scheme, which considers intra and extrapancreatic alterations, it is shown that the possibility of a pre-invasive diagnosis on CT is still limited, and requires further confirmation. CT examination is unique for demonstrating the extension of the lesion, and provides truly probative findings for a specific diagnosis, especially when signs of direct local or distant invasion appear.

Breast cancer diagnosis under the age of forty years.

The authors report on a multicentric consecutive series of 382 cases of primary breast cancer detected before the age of 40 years. Physical examination (PE) was always performed, whereas other diagnostic tests were performed in selected cases, namely mammography (M) in 334, fine needle aspiration cytology (CYT) in 188 and thermography (TH) in 123 cases. Single tests showed a high rate of false-negative/benign cases (PE, 0.23; M, 0.26; CYT, 0.37 and TH, 0.50), especially when the T1 subgroup was considered (PE, 0.34; M, 0.38; CYT, 0.42 and TH, 0.78). The poor results recorded for TH make its current diagnostic use highly questionable. The policy of extensive biopsy of all "dubious" benign lesions on PE allowed for the detection of 41 of 382 cancers and reduced the PE false-negative/benign rate to 0.12 for the total or 0.15 for T1 cancers, although about 80 unnecessary biopsies for each cancer detected were performed in this way. The association of PE to one or more tests resulted in even lower false-negative rates (0.06 for the total, 0.10 for T1 cancers). The authors criticize the aggressive policy of extensive biopsy recommendation based only on a dubious report on PE alone and stress the opportunity of the routine association of M and CYT to PE, since this combination seems to achieve a higher breast cancer detection rate even in this age group.

[Specificity and sensitivity of ERCP in pancreatic pathology]. / Specificità e sensibilità della ERCP nella patologia pancreatica.

Fifty-three patients were examined by endoscopic retrograde cholangiopancreatography (ERCP). Operative and/or instrumental-clinical findings indicated that 38 patients had pancreatic disease, consisting of 17 cases of neoplasia, 10 of chronic pancreatitis with benign stenosis, and 11 of chronic pancreatitis without stenosis. An analysis of Wirsung's duct and of the secondary ducts was carried out employing, in the latter case, linear discriminate analysis (Nix and Schmitz method). With this method, 16 of 17 patients (94%) were correctly assigned to group A (pancreatic neoplasia), thus indicating high sensitivity; 7 of 8 patients (88%) were assigned to group B (chronic pancreatitis with benign stenosis), and finally 7 of 10 patients (70%) were placed in group C (chronic pancreatitis without stenosis). Detection of a sample sign such as sharp and/or irregular stenosis of Wirsung's duct enabled a correct diagnosis of neoplasia in the cases examined; this criterion, however, is very specific but poorly sensitive. When it is absent, analysis of the secondary ducts is determinant. If the two criteria are applied together, an exact diagnosis of all forms of neoplasia is obtained.

[Duodenal and colonic involvement in neoplastic pathology. Anatomical and radiological considerations]. / Coinvolgimento duodeno-colico da patologia neoplastica. Considerazioni anatomiche e radiologiche.

The authors present 3 cases of duodeno-colic involvement by malignant neoplasms and analyse the main radiological features. Benign and malignant duodenocolic fistulas are discussed and colic lesions caused by an extrinsic process. Guiding radioanatomical criteria are stated namely the alterations in the site of the principal lesion first and, afterwards, the morphological changes or displacement of the bowel.

CT analysis of ovarian tumors: correlations with laparoscopical and surgical findings.

This study concerns a selected group of 21 patients with ovarian carcinoma in whom CT, laparotomy, and laparoscopy findings could be compared. Considering the loco-regional and distant abdominal sites of involvement, the limits and possibilities of CT in diagnosis and follow-up are outlined.