Gastrointestinal Metastases From Lobular Breast Carcinoma: A Literature Review.

Invasive lobular carcinoma (ILC) represents a rare subtype of breast carcinoma, originating from the lobule. Unlike ductal carcinoma, ILC does not express E-cadherin and thus can metastasize to uncommon sites. We aimed to investigate the clinicopathological characteristics of the rare subgroup of ILC patients with gastrointestinal (GI) metastases. A PubMed search was undertaken using the terms "Lobular Breast Carcinoma" AND "Gastrointestinal Metastasis." We identified 169 cases, with metachronous GI metastatic disease being approximately twice as common as synchronous GI metastases. The median age at initial diagnosis was 56.7 years (24-88). The majority of patients were hormonal receptor-positive and only a small minority was HER2-positive. The appearance of a gastrointestinal lesion was often the mode of revelation of ILC. Differential diagnosis from primary gastrointestinal cancer is sometimes challenging, especially in the case of signet-ring cell carcinoma. The median time from breast cancer diagnosis to GI metastases was 6.5 years (0-33). Most common metastatic sites include the stomach, colon, and rectum, in order of decreasing frequency, whereas metastases were found in every part of the digestive tract. In conclusion, metastases of ILC can arise in the gastrointestinal tract and they should be managed similarly to metastatic breast cancer.

Optimal Volume Assessment for Serous Fluid Cytology.

OBJECTIVE: This study aimed to investigate the optimal volume of serous fluid needed for accurate diagnosis using The International System for Reporting Serous Fluid Cytopathology (TIS), as well as to provide information on the distribution of serous effusion cases in the TIS categories (ND: non-diagnostic, NFM: negative for malignancy, AUS: atypia of undetermined significance, SFM: suspicious for malignancy, MAL: malignant) and relevant epidemiological data. METHODS: A retrospective analysis of 2340 serous effusion cases (pleural, peritoneal, and pericardial) from two hospitals between 2018 and 2020 was conducted. TIS categories were assigned to each case, and for 1181 cases, these were correlated with the volume of the analyzed fluid. RESULTS: Our study found statistically significant differences in volume distributions between certain TIS categories. Statistically lower volumes were observed in NFM compared to MAL, in UNCERTAIN (ND, AUS, SFM) compared to both MAL and NFM, and in NOT MAL (ND, NFM, AUS, SFM) compared to MAL. However, these differences were not substantial enough to hold any clinical relevance. CONCLUSIONS: This study suggests that while fluid volume may slightly influence the TIS category, it does not impact the diagnostic accuracy of serous effusion cytology. Therefore, the ideal serous effusion specimen volume can be defined solely by practical parameters.

The Impact of Thromboprophylaxis on the Survival of Patients with Advanced Pancreatic Cancer. The Pancreatic Cancer and Tinzaparin (PaCT) Study.

Pancreatic cancer (PaC) induces a prothrombotic and hypercoagulable state. The aim of this study was to investigate the effect of tinzaparin in combination with chemotherapy. The PaCT (pancreatic cancer and tinzaparin) study was a retrospective observational study that collected data regarding progression free survival (PFS) in advanced or metastatic PaC patients who received thromboprophylaxis with tinzaparin during chemotherapy with nab-paclitaxel (N) and gemcitabine (G). The primary end point was to compare, from already published data, the PFS of patients receiving thromboprophylaxis with tinzaparin with the PFS of patients receiving chemotherapy with N-G but no thromboprophylaxis. Secondary end points were efficacy and safety of anticoagulation. In total, 110 PaC patients, 93% with advanced or metastatic disease, treated with N-G and tinzaparin (10,291 ± 1176 Anti-Xa IU, OD, median duration 8.7, IQR: 5.6-11.9 months) were enrolled. Of these, 52% were males and; the median age was 68 (40-86 years). The tumor was located to in the pancreatic head at in 45% of the patients. The median PFS was 7.9 months (IQR: 5.0-11.8 months). Out of 14 similar studies (involving 2994 patients) identified via systematic search, it was determined that the weighted PFS of patients receiving N-G but no anticoagulation was 5.6 months. Therefore, patients receiving tinzaparin had 39.54% higher PFS than patients without thromboprophylaxis (p < 0.05). During the follow-up period of 18.3 ± 11.7 months, three (2.7%) thrombotic events were recorded while two clinically relevant non-major bleeding events occurred (1.9%). In conclusion, PFS in advanced PaC patients undergoing chemotherapy is positively impacted by anticoagulation. Thromboprophylaxis with tinzaparin in treatment dose is efficient and safe.

Current and emerging first-line systemic therapies in metastatic clear-cell renal cell carcinoma.

The treatment of metastatic clear-cell renal cell cancer (mccRCC) has seen substantial progress over the last decade. Until 2006, non-specific immunotherapy with high dose interleukin-2 (HD IL-2) was considered as standard therapy of mccRCC. The transition from cytokine to targeted therapy, and now to novel immunotherapeutic agents, significantly increased the overall survival (OS) of patients with mccRCC. Currently, 7 targeted agents and the combination of nivolumab/ipilimumab (immune checkpoint inhibitors, ICIs) have been approved as first-line therapy for mccRCC. Based on evidence from randomized phase III clinical trials, sunitinib and pazopanib (Tyrosine kinase inhibitors of vascular endothelial growth factor; VEGF-TKIs) are the most effective first-line options, especially in favorable and indermediate risk patients. Nivolumab/ipilimumab (dual checkpoint inhibitors) seem to be the preferred first-line therapy in poor-risk patients, although cabozantinib, temsirolimus, sunitinib and pazopanib are also recommended. HD IL-2 remains a reasonable first-line treatment option in selected, favorable-risk younger patients with good performance status. Based on data of previous phase I and II studies, several phase III trials investigating the efficacy and safety of the combination of ICI/VEGF-TKI versus sunitinib in untreated mccRCC are currently underway. These emerging therapies include the combinations of pembrolizumab/lenvatinib, pembrolizumab/axitinib, avelumab/axitinib and atezolizumab/ bevacizu-mab and seem to introduce the mccRCC therapy in a new auspicious era. Moreover, emerging new targeted therapies and other, beyond ICIs, immunotherapies are currently underway.

Severe Plasmodium vivax malaria complicated with acute respiratory distress syndrome: a case associated with focal autochthonous transmission in Greece.

In 2011, autochthonous Plasmodium vivax malaria emerged in a focal geographical area in Greece after importation by immigrants from the Indian subcontinent. We report the case of complicated P. vivax malaria in a previously healthy 42-year-old Greek female. The patient presented acute respiratory distress syndrome (ARDS), worsening jaundice, and thrombocytopenia after the administration of antimalarial treatment and despite a decreasing burden of parasitemia. She recovered fully after admission in the intensive care unit and support with mechanical ventilation. We discuss the risks potentially associated with the reappearance of P. vivax malaria in a previously malaria-free area.