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845 articles

April 20268

Case ReportPathology (Anatomic & Clinical)

Keratoameloblastoma: unusual keratinization in ameloblastoma: a case report and review of literature.

A 69-year-old man presented with a mandibular radiolucent lesion. Imaging showed a large unilocular radiolucency extending from the ramus to the distal aspect of tooth #30.

Oral Surg Oral Med Oral Pathol Oral RadiolApr 14, 2026Read case
Case ReportPathology (Anatomic & Clinical)

Primary Inflammatory Myofibroblastic Tumour of the Breast: A Potential Diagnostic Pitfall on Aspiration Cytology.

A 47-year-old woman presented with a painless right breast mass. Imaging showed a well-defined lobulated soft-tissue lesion categorised as BI-RADS 4A.

CytopathologyApr 10, 2026Read case
Clinical ResearchPathology (Anatomic & Clinical)

Diagnostic performance and heterogeneity of validated flow cytometry scores: a systematic review.

This systematic review examined validation evidence for flow cytometry diagnostic scores, focusing on B-lymphoid disorders (B-LPD) and myelodysplastic syndrome (MDS).

Crit Rev Clin Lab SciApr 10, 2026Read summary
Case ReportPathology (Anatomic & Clinical)

Gastroblastoma With MALAT1 :: GLI1 Fusion Gene in an 18-Year-Old Man: A Case Report and Literature Review.

An 18-year-old man was found to have a gastroblastoma, a rare biphasic neoplasm. Histology showed predominantly epithelioid cells in nests, cords, glands, and rosette-like structures, with focal spindle cells and rare…

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

Molecular and clinicopathological characteristics of NTRK fusions in papillary thyroid carcinoma: Hospital experience with a literature review.

Neurotrophic tyrosine receptor kinase ( NTRK ) fusions are rare but significant oncogenic drivers in papillary thyroid carcinoma (PTC).

Histol HistopatholApr 8, 2026Read case
Case ReportPediatrics

Gastric PEComa as a rare cause of upper gastrointestinal bleeding in pediatrics: Case report.

A 7-year-old girl presented with hematemesis and severe anemia. Imaging and digestive endoscopy identified a gastric mass, initially considered a gastrointestinal stromal tumor (GIST).

Arch Argent PediatrApr 2, 2026Read case
Case ReportOncology (Medical)

A Case of Incidental Adenoid Cystic Carcinoma of the Trachea on Gallium-68 PSMA PET/CT Imaging.

A 66-year-old man with biopsy-proven prostate adenocarcinoma and a PSA of 16 ng/mL underwent gallium-68 PSMA PET/CT for staging.

Clin Nucl MedApr 2, 2026Read case
Case ReportPathology (Anatomic & Clinical)

Endocervical gastric-type AIS: a rare histologic finding that further supports the hypothesis of a pyloric-type metaplastic origin.

A 70-year-old woman had atypical glandular cells on Pap testing and negative HPV molecular testing. Cervical conization showed atypical glandular epithelium diagnosed as gastric-type adenocarcinoma in situ (gAIS).

HistopathologyApr 1, 2026Read case

March 202616

Case ReportPathology (Anatomic & Clinical)

Clinicopathological Characteristics of IgG4-Related Disease Involving Uterus and Abdominopelvic Lymph Nodes: A Case Report.

A 51-year-old woman with prolonged menstruation had PET/CT findings of hypermetabolic uterine masses and multiple abdominopelvic lymph nodes, initially raising concern for malignancy.

Int J Surg PatholMar 31, 2026Read case
Case ReportPathology (Anatomic & Clinical)

True Papillae and Squamous Features in Prostate Carcinoma Represent a Potential Diagnostic Pitfall: Report of 3 Patients.

Three patients presented with hematuria and bladder lesions that resembled invasive high-grade urothelial carcinoma in limited transurethral resection specimens.

Int J Surg PatholMar 31, 2026Read case
Case ReportPathology (Anatomic & Clinical)

Basaloid Squamous Cell Carcinoma of the Midline Dorsal Tongue: Case Report and Review of the Literature.

A 76-year-old woman presented with irregular, exophytic, rugated and furrowed changes on the midline dorsal tongue. An outside biopsy was interpreted as mucoepidermoid carcinoma; MRI showed only mild linear enhancement…

Head NeckMar 31, 2026Read case
Case ReportPulmonology

Pulmonary Leukocytoclastic Vasculitis Associated with Myelodysplastic Syndrome.

A man in his 50s with myelodysplastic syndrome presented with fever, pulmonary infiltrates, and persistent inflammation despite antibiotic treatment.

Intern MedMar 31, 2026Read case
Case ReportPathology (Anatomic & Clinical)Open access

MRI findings of ovarian microcystic stromal tumor with pathologic correlation: a case report and literature review.

A 49-year-old woman had a right ovarian cystic mass with an irregularly thickened wall, raising concern for malignancy. MRI showed hemorrhagic contents, a T2-hyperintense wall divided by thin T2-hypointense septa, rapid…

Abdom Radiol (NY)Mar 30, 2026Read case
Case ReportPathology (Anatomic & Clinical)Open access

Mass-forming Acellular Keratin Masquerading as "Residual Tumor" in a Metaplastic Breast Carcinoma with Pathologic Complete Response: A Case Report.

A patient with metaplastic breast carcinoma showing squamous differentiation received neoadjuvant chemotherapy. Although a mass remained palpable and visible on ultrasonography after treatment, examination of the tumor…

Int J Surg PatholMar 27, 2026Read case
Case ReportOncology (Medical)

Localized Breast Amyloidosis in a Previously Treated Breast: A Case Report and Literature Review.

A 61-year-old woman with prior left breast invasive ductal carcinoma developed an enlarging mass at the mastectomy site eight years after treatment.

Int J Surg PatholMar 26, 2026Read case
Case ReportPathology (Anatomic & Clinical)

Integrated Clinicopathologic and Genetic Characterization of Renal TFE3-Rearranged PEComa with Melanin Pigmentation: A Case Series and Comprehensive Literature Review.

Three patients had renal masses detected on imaging; ultrasound showed well-circumscribed echogenic lesions. Histology demonstrated epithelioid tumors arranged in nests, sheets, or acini, with variable melanin…

Int J Surg PatholMar 26, 2026Read case
Case ReportInfectious Diseases

Rice bodies in nontuberculous mycobacterial tenosynovitis of the wrist joint.

An 89-year-old female farmer presented with a recurrent mass in her right forearm after two excisions. MRI showed low-intensity areas, and surgery revealed rice bodies.

Fukushima J Med SciMar 25, 2026Read case
Case ReportOncology (Medical)

Collision Tumor of Metastatic Lung Adenocarcinoma to Lower Limb Leiomyosarcoma: Case Report and Literature Review.

A 90-year-old man presented with a rapidly enlarging soft-tissue mass over the anterolateral right knee. Biopsy showed high-grade leiomyosarcoma, and imaging also identified a dominant pulmonary nodule.

Int J Surg PatholMar 24, 2026Read case
Clinical ResearchPathology (Anatomic & Clinical)

Diagnostic utility of EWSR1 in hyalinizing clear cell carcinoma: a systematic review and meta-analysis.

This PRISMA-guided systematic review and meta-analysis assessed EWSR1 rearrangements as diagnostic markers for hyalinizing clear cell carcinoma (HCCC), a rare salivary gland tumour.

J Stomatol Oral Maxillofac SurgMar 24, 2026Read summary
Case ReportNephrology

Nephrocalcinosis and Foam Cell-rich Medullary Interstitial Nephropathy in a Patient with Laxative-induced Hypokalemia.

A 62-year-old woman with long-standing laxative dependence was found incidentally to have hypokalemia and kidney dysfunction. Imaging showed bilateral multifocal renal calcification.

Intern MedMar 24, 2026Read case
Case ReportInfectious Diseases

Liver Paradoxical Reaction Presenting as a Solitary Hepatic Mass during Antituberculosis Therapy.

A woman in her late 20s receiving antituberculosis therapy for pulmonary tuberculosis developed a solitary hepatic mass. Contrast-enhanced ultrasonography could not distinguish inflammation from malignancy.

Intern MedMar 24, 2026Read case
Case ReportPathology (Anatomic & Clinical)

An Autopsy Case of Beare-Stevenson Cutis Gyrata Syndrome Presenting with an Extremely Short Small Intestine.

An infant with Beare-Stevenson cutis gyrata syndrome, a craniosynostosis associated with an FGFR2 pathogenic variant, had severe failure to thrive.

Intern MedMar 24, 2026Read case
Clinical ResearchPathology (Anatomic & Clinical)

Risk of malignancy in PTEN-altered thyroid nodules detected on preoperative FNA molecular testing: a systematic review and meta-analysis.

This systematic review and meta-analysis assessed malignancy risk in thyroid nodules with PTEN alterations detected by preoperative fine-needle aspiration molecular testing.

Hum PatholMar 20, 2026Read summary
Case ReportOncology (Medical)Open access

Cervical Small Cell Neuroendocrine Carcinoma Initially Detected on Cytology: Diagnostic Pitfalls and Clues.

A patient’s cervical small cell neuroendocrine carcinoma was first detected on conventional endometrial and cervicovaginal liquid-based cytology.

CytopathologyMar 19, 2026Read case

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