A 30-year-old man presented with sudden chest pain and evidence of multiple cystic lesions in both long and left-sided pneumothorax in HRCT. H&E stained section and IHC for CD1a and S100 were positive in lung samples. The patient was treated with the diagnosis of Isolated pulmonary langerhans cell histiocytosis.

A 31-year-old man with fever, dyspnea, abdominal pain, and jaundice has been admitted to the hospital in the southeast of Iran. Due to the presence of a pathognomonic skin lesion (Tache noire), the patient was diagnosed with Mediterranean spotted fever (MSF) and was treated with doxycycline.

A 2-year-old boy was diagnosed with ileocecal intussusception and underwent surgical treatment and appendectomy. Appendix histopathology revealed lymphoid cells with hyperchromatic nuclei, high mitotic activity, and starry sky appearance. The patient was diagnosed with Burkitt's lymphoma, which involves many organs, such as the appendix, liver, kidney, and bone marrow.

Hepatitis A virus (HAV) has some life-threatening extrahepatic complications, such as acute acalculous cholecystitis (AAC). We herein reported a HAV-induced AAC case in a young female, who developed acute liver failure (ALF) during the course of her disease and preform a literature review.