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497 articles

May 202624

Clinical ResearchOtolaryngology (ENT)

Clinical Characteristics, Diagnostic Features, and Medical Treatment of Sinonasal Sarcoidosis: A Systematic Review.

This systematic review examined clinical presentation, diagnosis, and medical treatment of sinonasal sarcoidosis (SNS), drawing on 68 case reports, case series, and observational studies involving 369 patients.

Am J Rhinol AllergyMay 22, 2026Read summary
Clinical ResearchOncology (Medical)

NUT Midline Carcinoma of the Head and Neck: A Systematic Review and Pooled Survival Analysis.

NUT midline carcinoma (NMC) is an aggressive malignancy driven by NUTM1 fusions in poorly differentiated tumor cells. This pooled analysis evaluates the impact of primary tumor location on overall survival (OS) in head…

Head NeckMay 22, 2026Read summary
Clinical ResearchOrthopedic Surgery

Current diagnostic methods for detecting avascular necrosis and irreversible bone death of the proximal pole of the scaphoid: a systematic review.

This systematic review examined how reliably MRI, CT, intraoperative findings and histology distinguish avascular necrosis (AVN) from irreversible bone death in the proximal scaphoid.

J Hand Surg Eur VolMay 22, 2026Read summary
Case ReportPathology (Anatomic & Clinical)

Honeycomb-Like Mucinous Carcinoma of the Pancreas, Mimicking Serous Cystadenoma.

A patient with a resected pancreatic mass was found to have mucinous carcinoma, which presented as a honeycomb-like multinodular cystic mass.

J Clin UltrasoundMay 21, 2026Read case
Case ReportOncology (Medical)

Uterine intra-leiomyoma metastasis originating from primary breast cancer: A rare entity.

An asymptomatic African American woman underwent hysterectomy for pelvic organ prolapse six years after treatment for primary breast cancer.

Int J Gynaecol ObstetMay 21, 2026Read case
Case ReportOphthalmology

Localized episcleral ALK-positive histiocytosis: a novel adult presentation confirmed by ALK gene rearrangement.

A 36-year-old woman presented with an episcleral nodule that resembled nodular scleritis. An excisional biopsy revealed foamy histiocytes and Touton-type giant cells, with strong ALK1 expression and confirmed ALK gene…

OrbitMay 19, 2026Read case
Case ReportPathology (Anatomic & Clinical)Open access

Merkel Cell Carcinoma With Divergent Differentiation-Or Something Else? A Triphasic Cutaneous Carcinoma With Lineage Plasticity.

A patient presented with a triphenotypic carcinoma on the left upper arm, characterized by a neuroendocrine carcinoma with Merkel cell features, a poorly differentiated carcinoma with squamous/ductal differentiation…

J Cutan PatholMay 19, 2026Read case
Case ReportPathology (Anatomic & Clinical)

PRRX1::NCOA1 Rearranged Fibroblastic Tumour: A New Report With a Brief Literature Review of an Uncommon Neoplasm.

A case of a PRRX1::NCOA1 rearranged fibroblastic tumor was presented, characterized by a well-circumscribed, monomorphic cellular structure with oval to spindle-shaped cells.

Int J Surg PatholMay 16, 2026Read case
Case ReportOncology (Medical)

A Periadrenal Gland Ewing Sarcoma With Extensive Posttreatment Ganglioneuroblastoma-Like Morphology in an Adult Patient.

A 33-year-old man presented with a retroperitoneal periadrenal mass, exhibiting features of Ewing sarcoma. Initial biopsy revealed small round cells with Homer-Wright rosettes and positive CD99 expression.

Int J Surg PatholMay 15, 2026Read case
Case ReportOncology (Medical)

Clinicopathological Features and Outcomes of SMARCA4-Deficient Carcinomas of the Stomach and Gastroesophageal Junction: A Case Series and Literature Review.

This report details five patients with SMARCA4-deficient gastric cancer, characterized by aggressive behavior and advanced stage at diagnosis.

Int J Surg PatholMay 15, 2026Read case
Case ReportDermatology

Acute generalized exanthematous pustulosis sine pustules.

The report describes AGEP presenting without clinically evident pustules, an atypical presentation that can complicate diagnosis when medication exposure is unclear or several drugs have been started close together.

Proc (Bayl Univ Med Cent)May 15, 2026Read case
Case ReportPathology (Anatomic & Clinical)Open access

Basaloid Squamous Cell Carcinoma of the Uterine Cervix: An Often Aggressive Subtype Frequently Underestimated by Cytology.

A case of basaloid squamous cell carcinoma (BSCC) of the cervix was initially misdiagnosed as a high-grade squamous intraepithelial lesion (HSIL) based on liquid-based cytology.

Diagn CytopatholMay 14, 2026Read case
Clinical ResearchPathology (Anatomic & Clinical)Open access

Using spaced repetition to teach histopathology significantly improves diagnostic skills: A randomized within-participant evaluation.

This randomized controlled trial evaluated the effectiveness of spaced repetition (SR) in enhancing diagnostic skills among 337 trainees and certified pathologists in histopathology.

Anat Sci EducMay 14, 2026Read summary
Case ReportOtolaryngology (ENT)

Distinguishing Inverted Sinonasal Papilloma and Respiratory Epithelial Adenomatoid Hamartoma: A Single Institution Case Series.

Four patients presented with sinonasal masses initially suspected to be inverted sinonasal papilloma (ISP) based on intraoperative frozen sections.

Int J Surg PatholMay 14, 2026Read case
Case ReportOncology (Medical)

Atypical Neurofibromatous Neoplasms of Uncertain Biological Potential in Children with Neurofibromatosis Type 1: Report of Two Patients and Review.

Two pediatric patients with Neurofibromatosis Type 1 (NF1) presented with rapidly enlarging peripheral nodules. The first patient, a 13-year-old boy, had a lumbogluteal nodule that showed growth despite treatment with…

Int J Surg PatholMay 14, 2026Read case
Case ReportPathology (Anatomic & Clinical)

Metaplastic Breast Carcinoma Hidden Behind a Melanocytic Facade: A Case Report with Literature Review on Metaplastic Breast Carcinoma with Melanocytic Differentiation.

A female patient in her late 20s presented with a breast tumor that exhibited melanocytic differentiation, leading to a challenging diagnostic process.

Int J Surg PatholMay 14, 2026Read case
Case ReportPathology (Anatomic & Clinical)

Fever, lymphadenopathy, and a diagnostic dilemma: a case of Kikuchi-Fujimoto disease masquerading as tuberculosis in a diabetic patient.

A middle-aged man with diabetes from South India presented with prolonged fever, substantial weight loss, and generalized lymphadenopathy.

Proc (Bayl Univ Med Cent)May 13, 2026Read case
Case ReportPathology (Anatomic & Clinical)Open access

Fatal splenic artery aneurysm rupture at medicolegal autopsy: A case series and review of the literature.

This case series examines six instances of fatal splenic artery aneurysm (SAA) rupture, highlighting the nonspecific clinical presentations that led to diagnostic delays.

J Forensic SciMay 12, 2026Read case
Clinical ResearchPathology (Anatomic & Clinical)

Diagnosis of the Novel IASLC Grading System Using Intraoperative Frozen Section (ECTOP-1014): A Prospective, Multicenter Clinical Trial.

This prospective, multicenter clinical trial evaluated the accuracy of intraoperative frozen section in diagnosing IASLC grades in early-stage lung adenocarcinoma.

Ann Thorac SurgMay 12, 2026Read summary
Case ReportHematology

Primary Oral MALT Lymphoma Without Nodal or Systemic Involvement: A Rare Presentation.

A middle-aged patient presented with a slow-growing, asymptomatic oral lesion that was initially misidentified as an oral lipoma.

Am J DermatopatholMay 11, 2026Read case
Case ReportOncology (Medical)

Inflammatory Myofibroblastic Tumor of the Breast Mimicking Complex Fibrocystic Changes, With a Novel CSTF3::ALK Fusion.

A 38-year-old woman presented with a 7-mm breast lesion classified as BI-RADS 3, initially suspected to be fibrocystic changes. Follow-up ultrasound revealed growth to 10 mm, leading to a core needle biopsy.

Int J Surg PatholMay 10, 2026Read case
Case ReportPathology (Anatomic & Clinical)

Primary Renal Sclerosing Epithelioid Fibrosarcoma With EWSR1::CREB3L1 Fusion: A Diagnostic Pitfall With a Comprehensive Review of Reported Patients.

Sclerosing epithelioid fibrosarcoma (SEF) is a rare malignant soft tissue sarcoma with morphologic and molecular overlap with low-grade fibromyxoid sarcoma (LGFMS).

Int J Surg PatholMay 8, 2026Read case
Case ReportPathology (Anatomic & Clinical)Open access

Atypical Spitz Tumor With RET::MXT1 Gene Rearrangement in a 14-Year-Old Girl: An Integrated Histopathologic, Immunohistochemical, and Molecular Diagnostic Approach.

A 14-year-old girl presented with a changing pigmented lesion on her upper back. Histopathological analysis revealed an asymmetric melanocytic proliferation with epithelioid cells and limited mitotic activity.

J Cutan PatholMay 7, 2026Read case
Case ReportOncology (Medical)Open access

Superficial Ewing Sarcoma of the Rectum: A Case Report and the Utility of Molecular Diagnostics.

A 38-year-old male presented with rectal bleeding and was found to have an ulcerated polyp near the dentate line. An excisional biopsy revealed a monotonous round cell malignancy with necrosis and high mitotic activity.

J Cutan PatholMay 7, 2026Read case

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