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- Unveiling patterns in cetacean strandings along southern atlantic iberia: temporal and spatial trends, seasonality, and causes of deathPublication . Hofman, Jan; Crawford, Sarah; Fialho, Ana; Casero, Maria; Pontes, João; Conceição Alves da Silva, Ana Maria; Nicolau, Lídia; Marçalo, AnaWe compiled 46 years of cetacean strandings in the Algarve, Portugal, describing temporal–spatial patterns, size–sex structure,and causes of death (COD). We analyzed national records and years with a dedicated regional stranding network (SN) to assessannual/seasonal trends, spatial hotspots, and compare biometrics and COD. In total, 1231 strandings were recorded; 73.2% wereidentified to 19 species. Five species comprised almost 68% of events: common dolphins 39.0%, striped dolphins 8.9%, minkewhales 8.0%, bottlenose dolphins 8.0%, and harbor porpoises 4.3%. GAMs confirmed that recorded strandings rose over timeand were higher during SN years (mean 63 yr.−1). Stranding hotspots occurred near Cape Santa Maria (Faro–Olhão), Lagos–Portimão, and Sagres; minke whales and harbor porpoises concentrated east of Cape Santa Maria. Seasonality was significantonly for minke whales (spring peak). Size–sex patterns were largely similar, with exceptions for larger stranded striped dolphinfemales and minke strandings dominated by juveniles. COD assignment improved with monitoring and was assessed for 75.6%of the observed carcasses. Bycatch was the leading COD for common dolphins, bottlenose dolphins, and minke whales. Thisstudy highlights the importance of a regional stranding network and a need for more ecological studies of cetaceans in the region.
- Assessing the role of CT imaging in identifying candidates for neoadjuvant chemotherapy in right colon cancer: a critical analysisPublication . Lopes, João Leão; Soares, Ana Sofia S.; Mendes, Beatriz; Tomada, Elisa Paoluzzi; Cunha, Miguel F.; Melina Fernandez, Laura; Amorim, Edgar; Azevedo, José; Parvaiz, AmjadBackground and purpose Standard treatment for localized right colon cancer is radical surgery, followed by adjuvant chemotherapy for stage III or intermediate MSS and high-risk stage II tumours. Recent studies suggest a benefit from neoadjuvant chemotherapy (NAC), particularly for T4b and/or N+tumours. Patient selection for NAC relies on CT-based clinical staging, but the accuracy of CT in detecting high-risk features is variable, raising concerns about potential overtreatment. The study aims to demonstrate the accuracy of CT staging of the right colon with the purpose of indicating neoadjuvant CT. Methods Patients undergoing curative right hemicolectomy between 2013 and 2023 at two Portuguese institutions were included. All had preoperative CT; those receiving NAC were excluded. Sensitivity, specificity, positive predictive value, and negative predictive value of CT in identifying T4b and N+tumours were calculated by comparing clinical (cTNM) and pathological (pTNM) staging. Results Among 165 patients (48% male, mean age 70.5 years), CT showed low sensitivity (26%) but high specificity (91%) for pT4b tumours, with a tendency toward understaging. For nodal disease, sensitivity was 87% and specificity 41%. Only 57% of cT4b and/or cN+cases confirmed at least one unfavorable pathological factor, implying potential overtreatment in 43% of patients if NAC were applied solely based on CT findings. Conclusion CT remains the standard for clinical staging but demonstrates limited accuracy in identifying high-risk right colon cancers. NAC decisions should integrate additional criteria beyond CT findings to avoid overtreatment.