Pleural involvement in Non-Hodgkin Lymphoma (NHL) is well documented, but primary pleural lymphomas are extremely rare, occurring mostly in immunosuppressed patients or associated with chronic pleural inflammation. Nevertheless, the pathogenesis and therapeutic approaches to counteract primary pleural lymphomas are still matter of debate. The authors present the clinical case of an 81-year-old female with respiratory and constitutional symptoms. A valvular heart disease and bilateral pleural effusion were known. The study carried out showed a large right pleural effusion; the fluid analysis was compatible with Diffuse Large B-cell Lymphoma (DLBCL), and two lymphomatous masses with pleural origin were found at the ipsilateral hemithorax. Primary pleural lymphoma was considered and chemotherapy was initiated with a good response and evolution. The authors report this remarkable clinical case because of its rarity, its excellent clinical evolution and the absence of an immunodeficiency context.

Tuberculous pericarditis is a rare extra-pulmonary manifestation of tuberculosis observed mainly in developed countries. It usually presents with concomitant tuberculous infection at a different site and, due to the lack of clinical specificity, diagnosis can be difficult. Thus, a diagnostic delay is frequent, entailing increased morbidity and mortality. The authors present a case of disseminated tuberculosis with predominantly cardiac symptoms with multiple negative samples for Mycobacterium tuberculosis, which evolved to constrictive pericarditis. With this case report, the authors emphasize the demand for a high index of suspicion for achieving a diagnosis and the importance of a multidisciplinary approach.

Livedo reticularis (LR) is a net-like cyanotic skin pattern resulting from cutaneous blood flow disturbance associated with several medical conditions. The authors present a case of a 77-year-old woman with a history of asthenia over one year, admitted to the hospital with sepsis by pneumonia. During her hospitalization, she developed a livedoid rash, and skin biopsy revealed infiltrates of atypical mononuclear cells causing capillary lumen obstruction. Intravascular large B-cell lymphoma was suspected and confirmed by bone marrow study. This case highlights the importance of being aware of different medical conditions associated with LR and the atypical presentation of a lymphoproliferative disorder.

Hemophagocytic lymphohistiocytosis poses a diagnostic dilemma due to the absence of specific clinical and laboratory findings, especially in adults. Despite greater recognition of the disease, secondary idiopathic forms are still reported.

The elimination of the aetiological factors causing liver injury is an important cornerstone in preventing progression and increasing survival in patients with cirrhosis. The authors present the case of a 63-year-old woman with a history of long-term alcohol abuse and consequent liver cirrhosis. Over the years, the patient presented progressive deterioration with severe malnutrition and had multiple hospital admissions due to decompensated cirrhosis, including refractory ascites, variceal bleeding and an extensive portal vein thrombosis (PVT). Anticoagulant therapy was not initiated due to a high risk of variceal bleeding. She eventually became abstinent, but PVT precluded a liver transplant. Over the following 10 years, her performance status gradually improved, with no new decompensation episodes and liver function normalization, although refractory ascites persisted. Abdominal CT showed spontaneous recanalization of the portal vein and a transjugular intrahepatic portosystemic shunt (TIPS) procedure was performed with gradual improvement of ascites. In this atypical case, an unexpected favourable evolution of advanced stage cirrhosis was observed with long-term improvement in clinical status and liver function, resulting in an estimated 10-year cumulative mortality rate of 99.98% and highlighting the importance of abstinence. Unexpectedly, spontaneous complete repermeabilization of the PVT was also observed, despite its extent and the absence of anticoagulation therapy.