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Sarcina ventriculi is a gram-positive anaerobic coccus with characteristic tetrad morphology. Sarcina ventriculiis identified by light microscopy with features of basophilic staining, cuboidal shape, tetrad morphology, and refractile nature. There have been very few case reports of Sarcina ventriculi reported in the literature. We present a case of a 53-year-old male, with gastric ulcer perforation where peritonitis was incidentally found to harbor Sarcina ventriculi in postmortem histopathological examination. Most of the cases exhibit abdominal pain, nausea, vomiting and delayed gastric emptying. It has also fatal life-threatening complications, such as gastric perforation and emphysematous gastritis. The histopathological examination has a key role for identification of the bacteria. The pathologist must always keep it in mind these bacteria as a cause of gastric ulcer perforation in the differential diagnosis. We want to present a case of a 53-year-old male gastric ulcer perforation who was found dead in his bed.

Pneumocystis jiroveci is the most common and serious opportunistic infection in acquired immune deficiency syndrome patients. It is detected in approximately 80% of human immunodeficiency virus (HIV) infected individuals. In this paper, we present a case of pneumocystic jiroveci pneumonia in a 32-year-old HIV-infected patient who committed suicide. We also present histopathological findings in the lung and aim to draw attention to suicidal tendency in HIV-infected individuals.

Cryptococcus neoformans is a highly mortal opportunistic yeast causing pneumonia and meningoencephalitis in cases with HIV infection. In rare cases, it causes systemic infections, spreading to organs like the spleen, liver, and kidneys. In this paper we present the post-mortem evaluation results of a systemic cryptococcal infection in a HIV-positive case found dead at home. A 30-year-old, 167 cm tall, 57 kg Chinese man found dead at home was sent to the Morgue Department for autopsy. In the anogenital region, multiple papular lesions,which were found 1 cm in diameter, off-white, having hard consistency, and raising from surface, were found. In autopsy, edema was found in the brain and cerebellum and cerebellar tonsils were prominent. The brain weighed 1561 g. Right lung was found 943 g and left lung 800 g in weight. Yeast growth was observed in the aerobic cultures of CSF, lung and spleent issue. The yeast form was defined as C. neoformans with API 32 C and Maldi-T of method. In addition, Serratia marcescens grew in blood and lung tissue culture. Plenty of gram-negative bacilli were seen in the Gram stain of tissue smear. In the post mortem histopathological examination of the tissues, histiocytic-pneumonia caused by cryptococcus and bacterial bronchopneumonia findings were seen in lungs and the parenchyma of the brain, and other organs were reported to be widely in vaded with cryptococcus. HIV-RNA was found positive in high quantitation in the blood sample of the case. HIVpositive immunocompromised people often die due to opportunistic infections. Our case died due to pneumonia infection caused by C. neoformans and secondary infection with S. marcescens and meningo encephalitis caused by systemic cryptococcus infection. Therefore, AIDS and related opportunistic infections should be strongly considered in cases where there is death of a foreign person at home with unknown clinical data and stories.