Iatrogenic tooth displacement is a rather unusual but significant complication during extractions' procedures. The most common anatomic positions of displacement for the lower teeth include the pterygomandibular, submandibular, sublingual, and lateral pharyngeal spaces. A retrospective analysis of three cases of tooth displacement to adjacent anatomic sites is presented. These patients were treated at the Oral and Maxillofacial Surgery Department, G. Papanikolaou General Hospital of Thessaloniki, Greece. Two cases refer to displaced roots in the submandibular space, and one refers to a lower third molar displaced in the lateral pharyngeal space. Third molar displacement is a clinical complication that should be considered during mandibular third molar extraction, and proper preventive measures should be taken into consideration.

A crucial complication after allogeneic hematopoietic cell transplantation (alloHCT), namely, acute graft-versus-host disease (aGVHD), occurs in about 50% of transplant recipients, leading to high morbidity and mortality. Thus far, the diagnosis of GVHD has been mainly established through clinical features and histologic or laboratory evidence of periductal lymphocyte infiltration, fibroplasia, and mixed lymphocytic and plasmocytic inflammation. Intensive research is focused on identifying biomarkers for the early diagnosis, prediction of disease, response to treatment, prognosis, and risk stratification of patients. The serum biomolecules that have been investigated are reported and summarized. Moreover, oral tissue involvement in GVHD is described, and other biomarkers that have been proposed, such as saliva, are analyzed. Future research is highlighted as a necessity in order for these biomarkers to be validated and quantified for use in clinical practice.

Background and clinical significance: The current report examines an unusual case of extranodal marginal zone lymphoma (EMZL) affecting only the extraocular muscles. The diagnostic challenges connected to such atypical manifestations are highlighted. The resemblance to inflammatory or infiltrative processes may lead to diagnostic delays; therefore, therapy administration may be withheld. Case presentation: A 77-year-old male was admitted to our hospital with periorbital edema accompanied with vision abnormalities affecting his left eye. The complete diagnostic workup and surgical treatment is presented using a navigation system. Adequate biopsy samples from the delicate orbital tissue can be obtained by utilizing contemporary visualization techniques, particularly navigation systems. The pathology report proved indispensable, with ample raw muscle tissue providing sufficient material from whicha definitive diagnosis was made. The indicated therapy was administered without delay. Conclusions: The uncommon, isolated affection of extraocular muscles by extranodal marginal zone lymphoma is exemplified in this case, highlighting the need for early clinical suspicion in order to differentiate this condition from other more prevalent inflammatory pathologies. The implementation of advanced technologies, such as image-guided navigation systems, alongside a highly skilled multidisciplinary medical team, ensures optimal patient results.