Mixed adenoneuroendocrine carcinoma (MANEC) is a rare malignant neoplasm of a complex pathomorphological pattern combining the features of adenocarcinoma with a neuroendocrine component. According to the new classification of the World Health Organization (WHO) from 2010, the nomenclature of neuroendocrine neoplasms (NEN) was changed using this name for the entire group of neoplasms. The name 'neuroendocrine tumours' covers highly diversified neoplasms, determined in the pathomorphological comparison as G1 (NET G1) or G2 (NET G2). In addition, neuroendocrine carcinomas (NEC) and mixed adenoneuroendocrine carcinomas (MANEC) are differentiated. In a search of the the PubMed database, approximately 50 reports about this carcinoma were found, mainly with the location in the stomach, lymph nodes, intestines, liver, peritoneum, gallbladder, pancreas, oesophagus. We have not found a description of the metastatic lesions typical of MANEC in the meninges, brainstem, and lungs. We present the case of a 63-year-old patient who was admitted to the Department of Neurology due to increased dizziness with accompanying diplopia, headache, nausea, and numbness of the hands. These symptoms appeared one day prior to admission, with intensification at night. The patient was initially diagnosed at the Department of Laryngology due to deafness of the right ear and deep hearing loss in the left ear four weeks prior to admission to our department. In the neurological examination, the following findings were detected: conscious, anxious, dysarthric speech, insignificant inspiratory dyspnoea, deafness of the right ear, deep hearing loss in the left ear, pharyngeal and palatal reaction, weak tension of the palato-pharyngeal fold, bilateral signs of central damage of the seventh nerve, insignificant deviation of the tongue to the left, muscle tone of the limbs without deficit, insignificantly decreased muscle tone in the left limbs, ataxia in the lower limbs, bilateral plantar reflex. In the admissions ward, CT examination of the head was performed and a hypodense focus in the left cerebral hemisphere, hypodense foci around the frontal horn of the lateral ventricles and small malacia cavities at the level of the subcortical nuclei were detected. A lumbar puncture was performed obtaining fluid with increased cytosis and a decreased glucose level. On the second day of hospitalisation, the general and neurological condition of the patient significantly worsened and a 'sympathetic storming' appeared followed by circulatory arrest. The patient was efficiently resuscitated, but then there was another sudden cardiac arrest and despite a long period of CPR, cardiac and respiratory action was not restored. After pathomorphological examination it was established that the whole image corresponded to MANEC located in the stomach, with dissemination mainly to the meninges, brainstem and lungs. In differential diagnosis rare causes of diseases must always be taken into consideration. An additional difficulty in diagnosing MANEC is a difference in the na...

Purpose: Limbic encephalitis (LE) is a rare but necessary condition to consider when experiencing cognitive disorders, seizures, and psychiatric disorders. Case description: This article presents a case of a 28-year-old patient with uncontrolled disease history, with systemic symptoms of viral infection and prolonged convulsive seizure status. Based on clinical symptoms, magnetic resonance imaging of the brain and cerebrospinal fluid test results revealed LE. After treatment and rehabilitation, the patient returned to work. Comment: Limbic encephalitis was first described in 1960. In terms of aetiology, we divide LE into non-infectious (a para nitrogen syndrome primarily associated with small cell lung cancer) and infectious cases (caused by herpes simplex virus). Other cases of autoimmune diseases have also been reported -non-paraneoplastic limbic encephalitis (NPLE), in which the presence of antibodies against the antigen of the neuronal membrane is observed. Non-paraneoplastic LE variants are examples of potentially reversible LE variants. Key words: limbic encephalitis, paraneoplastic syndrome, onconeuronal antibodies. StreszczenieCel: Limbiczne zapalenie mózgu (LE) jest chorobą rzadką, którą należy jednak uwzględnić w przypadku wystąpienia u pacjenta zaburzeń poznawczych, napadów padaczkowych i zaburzeń psychicznych. Opis przypadku: W pracy przedstawiono przypadek 28-letniej pacjentki z nieobciążonym wywiadem chorobowym, u której wystąpiły objawy ogólnoustrojowe infekcji wirusowej oraz przedłużający się drgawkowy stan padaczkowy. Na podstawie objawów klinicznych, obrazu rezonansu magnetycznego mózgu i wyników badań płynu mózgowo-rdzeniowego rozpoznano LE. Po leczeniu i rehabilitacji pacjentka wróciła do poprzednio wykonywanej pracy. Komentarz: Limbiczne zapalenie mózgu zostało opisane po raz pierwszy w 1960 r. Pod względem etiologicznym wyróżniamy przypadki nieinfekcyjne LE (o charakterze zespołu paranowotworowego związanego głównie z rakiem drobnokomórkowym płuc) oraz przypadki infekcyjne LE (spowodowane przez wirusa opryszczki pospolitej). Opisano również przypadki związane z chorobami