Latest Research
All publications from the Cancer3.AI database, newest first.
The embryonic stem cell factor UTF1 serves as a reliable diagnostic marker for germinomas.
Pantazis G, et al
Researchers investigated whether the protein UTF1, a transcription factor active in embryonic stem cells, could serve as a diagnostic marker for germinomas — a type of brain tumor arising from germ cells. The study examined 21 central nervous system (CNS) germinomas, two mixed CNS germ cell tumors, and over 150 other brain and metastatic tumors using immunohistochemical staining to detect UTF1 alongside established markers such as OCT4, cKIT, and PLAP. UTF1 was detected in all 23 CNS germ cell tumor samples, achieving a sensitivity of 100% and a specificity of 97%, outperforming existing markers including OCT4 and PLAP in both signal strength and detection frequency. While OCT4 was absent in brain metastases and certain benign vascular tumors, UTF1 showed only minimal, weak expression in two metastatic cases, confirming its high reliability. These findings position UTF1 as a new and dependable diagnostic tool that pathologists can use to accurately identify CNS germinomas, potentially improving diagnostic precision and guiding appropriate treatment decisions for patients with these rare brain tumors.
Pathology
Source →Peripheral T-cell and NK-cell lymphomas and their mimics; taking a step forward - report on the lymphoma workshop of the XVIth meeting of the European Association for Haematopathology and the Society for Hematopathology.
Attygalle AD, et al
A major international lymphoma workshop convened by the European Association for Haematopathology and the Society for Hematopathology reviewed over 200 cases of mature T-cell and natural killer (NK)-cell lymphomas to address longstanding diagnostic challenges in this field. These rare and diverse cancers of the immune system are notoriously difficult to classify because most lack distinctive genetic markers and share overlapping microscopic and protein-expression features. The expert panel organized cases into five major categories, including angioimmunoblastic T-cell lymphoma, CD30-positive T-cell disorders, extranodal neoplasms, Epstein-Barr virus-associated lymphomas, and post-transplant lymphoproliferative disorders, among others. Through detailed case review and multidisciplinary discussion incorporating the latest advances in immunophenotyping, cytogenetics, and molecular genetics, the workshop produced refined diagnostic criteria and clearer boundaries between overlapping disease entities. These recommendations are important for clinicians and pathologists because accurate classification directly guides treatment decisions, and misdiagnosis in this group of lymphomas can lead to inappropriate therapy and poorer patient outcomes.
Histopathology
Source →Clonally related follicular lymphomas and Langerhans cell neoplasms: expanding the spectrum of transdifferentiation.
West DS, et al
Researchers at a leading pathology center investigated a rare phenomenon in which follicular lymphoma, a common type of slow-growing blood cancer, can transform into a completely different type of cancer called a Langerhans cell neoplasm. The study describes two patients — a 52-year-old man and a 77-year-old woman — in whom follicular lymphoma was found to be clonally related to Langerhans cell tumors that developed either years later or simultaneously, meaning both cancers originated from the same ancestral cell. Advanced laboratory techniques including immunoglobulin gene rearrangement analysis and fluorescence in situ hybridization were used to confirm the shared clonal origin of these histologically distinct tumors. This finding challenges the traditional understanding that blood cells mature in a fixed, one-directional pathway, demonstrating instead that cancerous B lymphocytes retain the ability to switch lineage and become an entirely different cell type — a process called transdifferentiation. For clinicians, this discovery is critically important: when a lymphoma patient develops a seemingly unrelated tumor, the two may in fact share a common origin, which has implications for diagnosis, treatment planning, and understanding disease progression.
The American journal of surgical pathology
Source →Pseudopapillary pattern in intra-operative squash smear preparations of central nervous system germinomas.
Ates D, et al
Researchers from a pathology department investigated a diagnostic pitfall in brain tumors called germinomas, which are rare germ cell tumors occurring in the central nervous system, primarily in young patients. The study examined five cases of CNS germinoma in patients aged 5 to 21 years, all located in the pituitary or suprasellar region, where tissue samples were analyzed using intra-operative squash smear preparations — a rapid technique used during surgery to guide treatment decisions. A striking and previously underappreciated finding was that all five tumors displayed prominent pseudopapillary or papillary structures in these smear preparations, a pattern not typically expected in germinomas. This architectural appearance, combined with the characteristic cellular features such as vacuolated cytoplasm, irregular nuclei, and prominent nucleoli, alongside scattered small lymphocytes, could easily mislead a pathologist into misidentifying the tumor as a different, papillary-type cancer. The authors conclude that awareness of this pseudopapillary pattern in CNS germinomas is critical for clinicians performing intra-operative consultations, as misdiagnosis could lead to inappropriate treatment in children and young adults. Careful attention to fine cellular details rather than low-power architectural patterns is essential to reach the correct diagnosis.
Cytopathology : official journal of the British Society for Clinical Cytology
Source →Frequency and distribution of lymphoma types in a tertiary care hospital in South India: analysis of 5115 cases using the World Health Organization 2008 classification and comparison with world literature.
Arora N, et al
Researchers at a tertiary care hospital in South India conducted a large-scale, decade-long retrospective analysis of 5,115 lymphoma cases diagnosed between 2001 and 2010, classifying them according to the World Health Organization 2008 guidelines. The study found that non-Hodgkin lymphomas (NHL) accounted for nearly 79% of all cases, with diffuse large B-cell lymphoma being the most common subtype at nearly 47% of NHLs. Peripheral T-cell and NK-cell lymphomas were more frequent than in Western populations but less common than in some other Asian countries, while the mixed cellularity subtype dominated among Hodgkin lymphoma cases. Notably, about one-third of all NHLs presented as primary extranodal lymphomas, most often affecting the gastrointestinal tract, a finding with direct implications for diagnosis and treatment planning. This comprehensive dataset provides a valuable regional benchmark, highlighting important epidemiological differences between Indian and Western lymphoma populations that can guide more tailored clinical approaches in South Asia.
Leukemia & lymphoma
Source →