Is SARS-CoV-2 vertical transmission still a current problem? A case report on a diagnosed SARS-CoV-2 infection with a positive sample of urines.

Background And Aim: Current data suggest little to no possibility of original COVID-19 transmission in pregnant women to the fetus during pregnancy or childbirth. Warning with Omicron new variants has decreased.

Case Report: A clinical case of a SARS-CoV-2 virus transplacental infection of a newborn, born at the end of 2022, from a mother who tested positive for Sars-covid-2 and positive IgM SARS-CoV-2 anti-virus.

Osteosarcoma of the Jaws: A Literature Review.

Osteosarcoma of the jaws (OSJ) is a relatively rare disease, accounting for between 2% and 10% of all cases of osteosarcoma. It is morphologically and radiologically identical to the trunk and extremity variant, but distinct in several crucial aspects. The lesion is characterized by sarcomatous cells which produce a variable amount of osteoid bone.

p16 protein expression and correlation with clinical and pathological features in osteosarcoma of the jaws: Experience of 37 cases.

Background: In literature, no markers have been reported as predictive and prognostic factors in osteosarcoma of the jaw.

Methods: A retrospective analysis of p16 expression was performed in 37 patients with high-grade osteosarcoma of the jaw to investigate its potential prognostic and predictive value.

Results: p16 positivity was found in 56.

Ameloblastic Fibrosarcoma of the mandible evolving from a prior Ameloblastic Fibroma after two years: an unusual finding.

Transformation of an ameloblastic fibroma to an ameloblastic fibrosarcoma has been reported rarely in the literature. The present case report describes such evolution in a patient under long-term follow-up. The patient was first treated in 2008, and he developed the malignant counterpart of the disease 2 years later.

Active TGF-β signaling and decreased expression of PTEN separates angiosarcoma of bone from its soft tissue counterpart.

Angiosarcomas constitute a heterogeneous group of highly malignant vascular tumors. Angiosarcoma of bone is rare and poorly characterized. For angiosarcoma of soft tissue, some pathways seem to be involved in tumor development.