Metastatic Malignant Granular Cell Tumor in the Lymph Node: A Cytological Report With Immunocytochemical Analysis.

Granular cell tumors (GCTs) are relatively rare, whereas malignant GCTs are extremely rare. This brief report describes a cytological case of metastatic malignant GCT in the lymph node with immunocytochemical analysis. A 77 years old Japanese female with a history of surgical resection for malignant GCT in the back 8 years earlier presented with swelling of the right neck.

A Rare Case of Granular Cell Tumor of the Anus.

Granular cell tumors (GCTs) are uncommon soft tissue neoplasms derived from Schwann cells that can arise from various regions of the body. The majority originate from the head and neck. They are rarely encountered in the gastrointestinal tract and even more rarely in the anorectal region.

A rare case of granular cell tumor affecting the upper back in a child.

Granular cell tumors (GCT) are rare mesenchymal tumors belonging to Schwann cell lineage constituting 0.5% of all soft tissue neoplasms. They occur in skin, subcutaneous tissues, mucosal surfaces including within the deeper organs.

Unjamming Transition as a Paradigm for Biomechanical Control of Cancer Metastasis.

Tumor metastasis is a complex phenomenon that poses significant challenges to current cancer therapeutics. While the biochemical signaling involved in promoting motile phenotypes is well understood, the role of biomechanical interactions has recently begun to be incorporated into models of tumor cell migration. Specifically, we propose the unjamming transition, adapted from physical paradigms describing the behavior of granular materials, to better discern the transition toward an invasive phenotype.

Malignant granular cell tumour of floor of mouth (non-neural in origin) - A rare case report and review of literature.

Five cases of non-neuronal granular cell tumours of the oral cavity are documented in the literature. Additionally, one case of a non-neuronal granular cell tumour with features of malignancy was described. A malignant granular cell tumour is a rare neoplasm and counterpart of a benign granular cell tumour.

A case of gastric granular cell tumor successfully treated by laparoscopic and endoscopic cooperative surgery.

We describe a case of gastric granular cell tumor (GCT) treated with laparoscopic and endoscopic cooperative surgery (LECS). A 30-year-old male was referred to our hospital for the investigation of a subepithelial lesion (SEL). Contrast-enhanced computed tomography and esophagogastroduodenoscopy revealed a 15 mm SEL within the posterior wall of the gastric body.

Cisplatin-functionalized dual-functional bone substitute granules for bone defect treatment after bone tumor resection.

Invasive bone tumors pose a significant healthcare challenge, often requiring systemic chemotherapy and limb salvage surgery. However, these strategies are hampered by severe side effects, complex post-resection bone defects, and high local recurrence rates. To address this, we developed dual-functional bone substitute biomaterials by functionalizing commercially available bone substitute granules (Bio-Oss® and MBCP®+) with the established anticancer agent cisplatin.

Endoscopic resection for esophageal granular cell tumors: report of 62 cases.

Background: To analyze the clinical manifestations, endoscopic features, pathological features, endoscopic resection, and prognosis of esophageal granular cell tumors (GCTs).

Methods: The present study retrospectively analyzed and followed up the clinical data of 62 patients diagnosed with esophageal GCTs who underwent endoscopic resection at Zhongshan Hospital of Fudan University between July 2007 and March 2022. The clinicopathological features, endoscopic diagnosis, and treatment experience of esophageal GCT patients were summarized.

Differential regulation of Shh-Gli1 cell signalling pathway on homeodomain transcription factors Nkx2.2 and Pax6 during the medulloblastoma genesis.

Background: Medulloblastoma is a pediatric malignant brain tumor associated with an aberrantly activated Shh pathway. The Shh pathway acts via downstream effector molecules, including Pax6 and Nkx2.2.

Atypical Multifocal Granular Cell Tumor with FLT3 Y842C Somatic Mutation: A case report and a review of the literature.

Introduction: Granular cell tumors (GCT) are predominantly benign neoplasms composed by cells with abundant eosinophilic granular cytoplasm. Although the majority of GCTs exhibit a benign clinical course, a minority display cytological atypia and may exhibit aggressive, cancer-like behavior. Definitive evidence of malignancy in GCTs is reliably established only through the presence of metastasis.

Analysis of DNA Methylation in Gliomas: Assessment of Preanalytical Variables.

Precision oncology is driven by biomarkers. For glioblastoma multiforme (GBM), the most common malignant adult primary brain tumor, O-methylguanine-DNA methyltransferase (MGMT) gene promoter methylation is an important prognostic and treatment clinical biomarker. Time-consuming preanalytical steps such as biospecimen storage, fixation, sampling, and processing are sources of data irreproducibility, and all these preanalytical variables are confounded by intratumor heterogeneity of MGMT promoter methylation.

Clinicopathological features and treatment of aggressive natural killer cell leukemia: case series and literature review.

Background: Aggressive natural killer cell leukemia (ANKL) is rare and difficult to diagnose in early stages, with no standard treatment and a poor prognosis.

Case Presentation: Two adolescents with ANKL presented with hemophagocytic lymphohistiocytosis (HLH), with Case-1 presenting as refractory HLH and Case-2 with lung involvement. The morphology of bone marrow showed an increase in unidentified cells, which mainly expressed CD56.

Pituitary spindle cell oncocytoma: Two cases report and literature review.

Introduction: Pituitary spindle cell oncocytoma (PSCO) is a seldom-encountered type of pituitary neoplasm with distinctive histological features. It was first described as a distinct entity by Roncaroli et al. in 2002.