A Pictorial Review of the Role of Imaging in the Detection, Management, Histopathological Correlations, and Complications of COVID-19 Pneumonia.

Imaging plays an important role in the detection of coronavirus (COVID-19) pneumonia in both managing the disease and evaluating the complications. Imaging with chest computed tomography (CT) can also have a potential predictive and prognostic role in COVID-19 patient outcomes. The aim of this pictorial review is to describe the role of imaging with chest X-ray (CXR), lung ultrasound (LUS), and CT in the diagnosis and management of COVID-19 pneumonia, the current indications, the scores proposed for each modality, the advantages/limitations of each modality and their role in detecting complications, and the histopathological correlations.

[Prognostic and curative value of sentinel node in breast cancer. A 377 patients experience]. / Valore prognostico e curativo del linfonodo sentinella nel trattamento chirurgico del cancro della mammella. Analisi di 377 pazienti.

Sentinel node is defined as the first lymphnode receiving limphatic drain from the breast. Several studies show a very low recurrence rate to axillary and locoregional nodes in sentinel node negative patients who did not undergo axillary dissection. Our study aims to verify if complete axillary dissection could be replaced by sentinel node biopsy (SNB) in the staging and treatment of breast cancer. From January 2005 to December 2008, 377 patients (mean age 57.63) underwent SNB in the General Surgery unit of "San Giuseppe Moscati" Hospital in Avellino (Italy). All the patients underwent SNB with local anesthesia. Histologic studies were performed using GIVOM protocol (Veneto Breast cancer interdisciplinary group). Sixty five patients (17.2%) underwent a radical mastectomy with SNB and 312 (82.6%) patients underwent a quadrantectomy with SNB. Of this last group, 178 (47.2%) underwent a superior quadrant excision with SNB, 77 (20.4%) an inferior quadrant excision with SNB and 57 (15.1%) a central quadrant excision with SNB. Ductal carcinoma represented 57.3% of the tumous detected, lobular carcinoma was diagnosed in 16.4% of the cases, intraductal microinvasive carcinoma in 10.3%, ductal carcinoma in situ in 5.8% while the other histotypes were diagnosed in 10% of the tumours. All SNB+ patients (34.5%) underwent a radical axillary dissection in general anesthesia. Sixty nine (53%) patients were diagnosed with axillary node metastasis, after axillary dissection Micrometastasis resulted in 19.6% of the excised patients. The prevalence of axillary node metastasis was 26.4% (581/2198), while the incidence was 34.5% (130/377). The first axillary lymphnodes level was metastasized in 65.8% patients who had undergone an axillary dissection, level I and II in 268% and all the levels in 7.4%. Only one case (0.4%) of nodal metastatic recurrence has been diagnosed in patients who had undergone SNB alone, after a mean follow-up of 28.5 month. Apart from showing a very high diagnostic and staging accuracy, the high level of SN detection associated with a high predictive rate underline a lower complications rate if compared to complete nodal dissection.