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Acinic cell carcinoma (ACC) is a low-grade malignant salivary gland neoplasm that comprises approximately 17% of primary salivary gland malignancies or about 6% of all salivary gland neoplasms. The most common intraoral sites are the buccal mucosa, lips, and palate. The diagnosis of ACC frequently presents difficulties, owing to its great radiological and cytological similarity with benign tumors and with normal acinar component of the salivary gland, respectively. The management of ACC consists of complete surgical excision. Here, we report a case of ACC on the left retromolar trigone, a rare location in a 44-year-old female.

Lipoma is called the \"universal tumor\" or the \"ubiquitous tumor\" as it occurs anywhere in the body where fat is found. Intraosseous lipoma is a rare lesion that constitutes not more than 0.1% of bone tumors. There are only a few reported cases of intraosseous lipoma of the maxilla in the literature. The diagnosis of intraosseous lipoma of the maxilla may be a challenge, due to its rarity and clinical similarity with many other radiolucent lesions. Therefore, histopathological examination is mandatory. The radiolucent nature and mature adipose tissue admixed with the bony trabeculae confirms the diagnosis of intraosseous lipoma. Here, we report a case of intraosseous lipoma of the left maxillary tuberosity in a 52-year-old male patient.

Introduction: Dental morphology is a highly heritable characteristic which is stable with time and has a fairly high state of preservation. Nonmetric dental traits have crucial role in ethnic classifications of a population that helps in forensic racial identification purposes. Aims and Objectives: To determine the frequency and variability of possible nonmetric tooth traits using extracted permanent posterior teeth from Kerala population for discerning racial ethnicity. Materials and Methods: This qualitative, cross-sectional study was carried out using 1743 extracted intact permanent posterior teeth collected from different dental clinics situated all over Kerala. Results: The more common features on premolars were multiple lingual cusps (31.21%), distal accessary ridges (16.28%) and Tom's root (17.9%). In upper first molars, Carabelli trait expression was 17.78% and other common features included metaconulo, cusp 5 and enamel extensions. Conclusion: Posterior tooth traits had variable expression in the study population. Low prevalence rate of Carabelli trait in this study is characteristic of Asian population. This research explored new elements of invaluable tooth traits values to understand racial ethnicity of Kerala population.

Sialadenoma papilliferum (SP) classified under the ductal papillomas by the WHO is a rare benign tumor of minor salivary glands. It is a rare lesion of salivary glands predominantly affecting the minor glands. It has characteristic exophytic and endophytic clinical growth pattern. Histopathologically, it is characterized by papillary projections supported by fibrovascular connective tissue core and infiltrated with mixed inflammatory cells. The ductal lining epithelium of double-layered cells of luminal layer of tall columnar cells and a basilar layer of small cuboidal cells shows additional papillary projections into the lumen. We report a case of SP of mid palate.

Lipomas are commonly occurring benign tumors consisting of mature white adipocytes surrounded by a thin fibrous capsule. It is the most common type of soft tissue mesenchymal neoplasm. Angiofibrolipoma is a rare subtype of lipoma. The most common site of angiofibrolipoma is in the back, the neck, or the shoulders. Only a few cases have been reported to occur in the oral region. This article reports a case of a 34-year-old male patient with a chief complaint of a swelling in the lower lip for the past 2 years and was diagnosed as an angiofibrolipoma. A thorough search of the literature was carried out using Pubmed, Sciencedirect, Google Scholar, and Medline until 2018 using angiofibrolipoma as a keyword. To the best of our knowledge, this is the first case reported in the literature involving the lower lip.

Epithelioid hemangioendothelioma (EHE) is an uncommon vascular neoplasm intermediating hemangioma and angiosarcoma characterized by the proliferation of epithelioid or histiocytoid endothelial cells with vacuolated cytoplasm and occasional eosinophilic spindle cells. Tumors of intermediate behavior may recur locally and metastasize but with less frequency compared to malignant ones. It rarely affects the oral cavity. Literature review shows only a few cases of this entity in the oral mucosa. Due to its rarity, we report a case of EHE on the upper lip.

Evaluating the quality of multi-turn chatbot interactions remains challenging, as most existing methods assess interactions at the turn level without addressing whether a user's overarching goal was fulfilled. A ``goal'' here refers to an information need or task, such as asking for policy information or applying for leave. We propose a comprehensive framework for goal-oriented evaluation of multi-agent systems (MAS), introducing the \\textbf{Goal Success Rate (GSR)} to measure the percentage of fulfilled goals, and a \\textbf{Root Cause of Failure (RCOF)} taxonomy to identify reasons for failure in multi-agent chatbots. Our method segments conversations by user goals and evaluates success using all relevant turns. We present a model-based evaluation system combining teacher LLMs, where domain experts define goals, set quality standards serving as a guidance for the LLMs. The LLMs use ``thinking tokens'' to produce interpretable rationales, enabling \\textit{explainable}, \\textit{data-efficient} evaluations. In an enterprise setting, we apply our framework to evaluate AIDA, a zero-to-one employee conversational agent system built as a ground-up multi-agent conversational agent, and observe GSR improvement from 63\\% to 79\\% over six months since its inception. Our framework is generic and offers actionable insights through a detailed defect taxonomy based on analysis of failure points in multi-agent chatbots, diagnosing overall success, identifying key failure modes, and informing system improvements.