Patient with clinical and laboratory picture compatible with acute infectious mononucleosis with Epstein-Barr Virus (EBV) receives from the expert wide information regarding the virus, the symptoms and clinical course, the needed follow-up tests etc.

52-year-old male with a one year history of lower motor neuropathy affecting the limbs, left upper and lower limbs clinically and all 4 limbs electrically. The neurologic examination showed left lower and left upper limb hyposthenia with mainly distal motor clumsiness, appearance of left upper limb hypotrophy and diffuse fasciculations. The patient was diagnosed with “suspect motor neuron disease" and was treated with IVIG cycles with slight initial improvement, but later lack of response and worsening of the clinical condition.

67-year-old male began to complain of chronic pain in the left lower rib cage. The pain is stitch, ever-present, dull and localized at the level of his left last rib, and became slightly worse in the last 2 years. Recent image findings: MRI - "Ovalish hypoechogenic solid formation, Ultra sound - "Suspected intercostal neurinoma at ribs 10, 11 and 12.

A 57 year old female complained about appearance of red to dark red pruritic bullous lesions . These lesions were, and still are, located on the legs from the knee to the ankles, and on the back of the feet. These manifestations appeared in variable phases during the next 4 years, with episodes of more numerous pustules appearing in some periods, and more isolated in other periods.

2-year-old female had been diagnosed with Pleuropulmonary Blastoma. The disease extent included the lung and pleura with no signs of metastatic spread. It was decided to start with 3 cycles of chemotherapy and afterwards to carry out a CT scan reassessment and surgical operation. The expert agrees that patients treated with combination of chemotherapy and complete surgical resection do better. Achieving total resection of the tumor results in a significantly better prognosis, whereas extrapulmonary involvement at diagnosis results in worse prognosis.

2-year-old girl was diagnosed with pleuropulmonary blastoma (PPB). She presented with cough and fever which was treated as pneumonia. When her symptoms did not improve, a chest X-ray showed a right lower lobe infiltrate with pleural effusion and a cystic lesion superiorly. She was further treated with antibiotics and improved clinically, but follow-up with chest CT showed a persistent cystic area in the right lower lobe and pneumothorax. She thus underwent pleural drainage and thoracoscopic biopsy, revealing a diagnosis of "cystic pleuropulmonary blastoma".

53-year-old male with lower motor neuropathy affecting all 4 limbs. The neurologic examination showed left limb hyposthenia, left upper limb hypotrophy and diffuse fasciculations. The patient was diagnosed with “suspect motor neuron disease" and was treated with IVIG cycles with slight initial improvement, but later lack of response and worsening of the clinical condition.

67-year-old male suffering a constant pain at the bottom of the lower left rib cage for the last two years. The pain is described as not being extreme nor affected by breathing; it is dull and always present. Various imaging scans were unremarkable although diffuse degenerative disk spinal abnormalities were noted.

Patient with clinical and laboratory picture compatible with acute infectious mononucleosis with Epstein-Barr Virus (EBV). Although he still feels weak, his condition is slowly improving. There is a gradual disappearance of the fever episodes and rash, in parallel with gradual normalization of the liver enzymes results, and disappearance of atypical lymphocytes. The reactivation of Herpes labialis can be explained by the stress involved in the EBV infection or the Cortisone treatment.