Challenging differential diagnosis

14 Jul 2026 : Case report
Primary Small Cell Neuroendocrine Carcinoma of the Breast in a 75-Year-Old Woman With Aggressive Recurrence Despite Multimodal Therapy: A Case Report and Literature Review
Shefa Abdullah Alamoudi
, Hadeel Elwaheidi, Hanan Albishi, Sarah Aldosari
, Asma M. Tulbah, Wafa Alkhayal
DOI: 10.12659/AJCR.952443
Am J Case Rep 2026; 27:e952443
564 953 0

14 Jul 2026 : Case report
Primary Small Cell Neuroendocrine Carcinoma of the Breast in a 75-Year-Old Woman With Aggressive Recurrence Despite Multimodal Therapy: A Case Report and Literature Review
Shefa Abdullah Alamoudi
, Hadeel Elwaheidi, Hanan Albishi, Sarah Aldosari
, Asma M. Tulbah, Wafa Alkhayal
DOI: 10.12659/AJCR.952443
Am J Case Rep 2026; 27:e952443
564 953 0

13 Jul 2026 : Case report
Coexistence of Multiple Myeloma, Mast Cell Hyperplasia, and Low-Level Myeloid Blastocytosis: A Report of a Rare Case
Meng Yang, Qian Wang, Jian Zhang, Hong Jiang, Hongzhi Xu, Kang Lu, Yujie Jiang
DOI: 10.12659/AJCR.952005
Am J Case Rep 2026; 27:e952005
616 1,173 0

13 Jul 2026 : Case report
Coexistence of Multiple Myeloma, Mast Cell Hyperplasia, and Low-Level Myeloid Blastocytosis: A Report of a Rare Case
Meng Yang, Qian Wang, Jian Zhang, Hong Jiang, Hongzhi Xu, Kang Lu, Yujie Jiang
DOI: 10.12659/AJCR.952005
Am J Case Rep 2026; 27:e952005
616 1173 0

12 Jul 2026 : Case report
Infective Endocarditis Presenting With Scalp Allodynia and a Giant Cell Arteritis-Like Vasculitic Phenotype
Ryohei Goto, Hiroki Kojima
, Keiichi Iwanami
DOI: 10.12659/AJCR.952926
Am J Case Rep 2026; 27:e952926
671 1,166 0

12 Jul 2026 : Case report
Infective Endocarditis Presenting With Scalp Allodynia and a Giant Cell Arteritis-Like Vasculitic Phenotype
Ryohei Goto, Hiroki Kojima
, Keiichi Iwanami
DOI: 10.12659/AJCR.952926
Am J Case Rep 2026; 27:e952926
671 1166 0

10 Jul 2026 : Case report
An 18-Year-Old Man with Bleeding From a Meckel's Diverticulum of the Terminal Ileum Diagnosed by 99mTc-Pertechnetate Scintigraphy (Meckel's Scan)
Hasan M. Alswiket
, Rakan S. Alshahrani
, Ibrahim M. Alzahrani, Mosab A. Alarfaj
DOI: 10.12659/AJCR.951726
Am J Case Rep 2026; 27:e951726
703 1,064 0

10 Jul 2026 : Case report
An 18-Year-Old Man with Bleeding From a Meckel's Diverticulum of the Terminal Ileum Diagnosed by 99mTc-Pertechnetate Scintigraphy (Meckel's Scan)
Hasan M. Alswiket
, Rakan S. Alshahrani
, Ibrahim M. Alzahrani, Mosab A. Alarfaj
DOI: 10.12659/AJCR.951726
Am J Case Rep 2026; 27:e951726
703 1064 0

10 Jul 2026 : Case report
Thoracolaparoscopic Esophagectomy for Severe Post-Corrosive Esophageal Stricture in a Young Adult: Implications for Minimally Invasive Surgical Practice
Kuanysh Kanatov
, Adil Shokebaev
, Bolatbek Baimakhanov
, Shakir Zhurayev
, Gulziya Ismailova
, Nurmakhan Imammyrzayev
, Nurbol Orynbassar
, Nazar Tolkyn
, Khozybek Kazakhstan
, Utkalbayev Garifulla
DOI: 10.12659/AJCR.953371
Am J Case Rep 2026; 27:e953371
552 933 0

10 Jul 2026 : Case report
Thoracolaparoscopic Esophagectomy for Severe Post-Corrosive Esophageal Stricture in a Young Adult: Implications for Minimally Invasive Surgical Practice
Kuanysh Kanatov
, Adil Shokebaev
, Bolatbek Baimakhanov
, Shakir Zhurayev
, Gulziya Ismailova
, Nurmakhan Imammyrzayev
, Nurbol Orynbassar
, Nazar Tolkyn
, Khozybek Kazakhstan
, Utkalbayev Garifulla
DOI: 10.12659/AJCR.953371
Am J Case Rep 2026; 27:e953371
552 933 0

09 Jul 2026 : Case report
Anterior ST-Segment Elevation Myocardial Infarction Shortly After Cefaclor Exposure: A Case Report Highlighting Kounis Syndrome as a Differential Diagnosis
Quan Zuo, Yue Zhu, Zhiwei Wang, Tao Ge
DOI: 10.12659/AJCR.953705
Am J Case Rep 2026; 27:e953705
594 821 0

09 Jul 2026 : Case report
Anterior ST-Segment Elevation Myocardial Infarction Shortly After Cefaclor Exposure: A Case Report Highlighting Kounis Syndrome as a Differential Diagnosis
Quan Zuo, Yue Zhu, Zhiwei Wang, Tao Ge
DOI: 10.12659/AJCR.953705
Am J Case Rep 2026; 27:e953705
594 821 0

08 Jul 2026 : Case report
Misdiagnosis of Endometrioid Borderline Ovarian Tumors by Intraoperative Frozen Section Pathology: A Case Report and Review of the Literature
Huifen Wang, Hongqin Du
DOI: 10.12659/AJCR.952134
Am J Case Rep 2026; 27:e952134
685 1,161 0

08 Jul 2026 : Case report
Misdiagnosis of Endometrioid Borderline Ovarian Tumors by Intraoperative Frozen Section Pathology: A Case Report and Review of the Literature
Huifen Wang, Hongqin Du
DOI: 10.12659/AJCR.952134
Am J Case Rep 2026; 27:e952134
685 1161 0

08 Jul 2026 : Case report
A 31-Year-Old Woman With Liver Cirrhosis Due to Wilson Disease and the Double Impact of Active Tuberculosis and Anti-Tuberculosis Therapy Resulting in Acute Liver Injury
Petar Trifonov, Sonya Stefkova Dragneva, Donika K. Todovichin, Ivana Tihomirova Kitaeva, Rosen K. Nikolov
DOI: 10.12659/AJCR.953050
Am J Case Rep 2026; 27:e953050
706 1,011 0

08 Jul 2026 : Case report
A 31-Year-Old Woman With Liver Cirrhosis Due to Wilson Disease and the Double Impact of Active Tuberculosis and Anti-Tuberculosis Therapy Resulting in Acute Liver Injury
Petar Trifonov, Sonya Stefkova Dragneva, Donika K. Todovichin, Ivana Tihomirova Kitaeva, Rosen K. Nikolov
DOI: 10.12659/AJCR.953050
Am J Case Rep 2026; 27:e953050
706 1011 0

07 Jul 2026 : Case report
Rare Systemic Vasculitides: Polyarteritis Nodosa and Takayasu Arteritis
Rafael de Almeida
, Eduarda da Silveira Cereta
, Leonel Guilherme Brasil Soares
, Mariele Zardin Moraes
, Raida Ahmad Musa Mheisen Husein
DOI: 10.12659/AJCR.951271
Am J Case Rep 2026; 27:e951271
676 1,371 0

07 Jul 2026 : Case report
Rare Systemic Vasculitides: Polyarteritis Nodosa and Takayasu Arteritis
Rafael de Almeida
, Eduarda da Silveira Cereta
, Leonel Guilherme Brasil Soares
, Mariele Zardin Moraes
, Raida Ahmad Musa Mheisen Husein
DOI: 10.12659/AJCR.951271
Am J Case Rep 2026; 27:e951271
676 1371 0

06 Jul 2026 : Case report
Vacuum Scaling Drainage in the Treatment of Infected Elbow Charcot Neuroarthropathy: A Case Report and Literature Review
Hongyuan Yang
DOI: 10.12659/AJCR.952838
Am J Case Rep 2026; 27:e952838
633 906 0

06 Jul 2026 : Case report
Vacuum Scaling Drainage in the Treatment of Infected Elbow Charcot Neuroarthropathy: A Case Report and Literature Review
Hongyuan Yang
DOI: 10.12659/AJCR.952838
Am J Case Rep 2026; 27:e952838
633 906 0

04 Jul 2026 : Case report
Dermatitis Artefacta: A Multidisciplinary Approach
Xiaowen Wen
, Xueting Zeng
, Chao Ji
DOI: 10.12659/AJCR.952958
Am J Case Rep 2026; 27:e952958
742 1,127 0

04 Jul 2026 : Case report
Dermatitis Artefacta: A Multidisciplinary Approach
Xiaowen Wen
, Xueting Zeng
, Chao Ji
DOI: 10.12659/AJCR.952958
Am J Case Rep 2026; 27:e952958
742 1127 0

03 Jul 2026 : Case report
Pancreatic Adenocarcinoma Presented as Paraneoplastic Dermatomyositis Complicated with Rhabdomyolysis: Case Report and Review
Jafar Alsheyyab, Hala Ahmad Al-Mahasneh, Shaimaa Y. Al-khalaileh, Hamzah A. Hasan
, Khitam Al-Refu
DOI: 10.12659/AJCR.952839
Am J Case Rep 2026; 27:e952839
1,044 1,536 0

03 Jul 2026 : Case report
Pancreatic Adenocarcinoma Presented as Paraneoplastic Dermatomyositis Complicated with Rhabdomyolysis: Case Report and Review
Jafar Alsheyyab, Hala Ahmad Al-Mahasneh, Shaimaa Y. Al-khalaileh, Hamzah A. Hasan
, Khitam Al-Refu
DOI: 10.12659/AJCR.952839
Am J Case Rep 2026; 27:e952839
1044 1536 0

02 Jul 2026 : Case report
Tacrolimus-Induced Thrombotic Microangiopathy in a Kidney Transplant Recipient After Treatment for Acute Allograft Rejection
Yen-Hao Liao, Ming-Yi Huang
DOI: 10.12659/AJCR.953247
Am J Case Rep 2026; 27:e953247
1,030 2,505 0

02 Jul 2026 : Case report
Tacrolimus-Induced Thrombotic Microangiopathy in a Kidney Transplant Recipient After Treatment for Acute Allograft Rejection
Yen-Hao Liao, Ming-Yi Huang
DOI: 10.12659/AJCR.953247
Am J Case Rep 2026; 27:e953247
1030 2505 0

02 Jul 2026 : Case report
Migrating Needle in Right Ventricle Wall With Purulent Tamponade
Anna Żuk, Maciej Sałagaj
, Sebastian Pszonak, Grzegorz Makowicz
, Aleksander Gajewski, Dariusz Zieliński
, Agata Bilewska, Andrzej Budaj
, Krzysztof Wróbel
DOI: 10.12659/AJCR.953286
Am J Case Rep 2026; 27:e953286
706 995 0

02 Jul 2026 : Case report
Migrating Needle in Right Ventricle Wall With Purulent Tamponade
Anna Żuk, Maciej Sałagaj
, Sebastian Pszonak, Grzegorz Makowicz
, Aleksander Gajewski, Dariusz Zieliński
, Agata Bilewska, Andrzej Budaj
, Krzysztof Wróbel
DOI: 10.12659/AJCR.953286
Am J Case Rep 2026; 27:e953286
706 995 0

01 Jul 2026 : Case report
Acari-Induced Diarrhea in Young Adult Patients: Case Report From Indonesia
Lyana Setiawan
, Jessica Levina
, Taswin Prawira, Yulita Cindra, Jimmy Tandradynata
, Mercy Tiarmauli Panjaitan, Edho Yuwono
, Nurhadi Eko Firmansyah
, Retno Wahyuningsih
DOI: 10.12659/AJCR.952492
Am J Case Rep 2026; 27:e952492
679 1,077 0

01 Jul 2026 : Case report
Acari-Induced Diarrhea in Young Adult Patients: Case Report From Indonesia
Lyana Setiawan
, Jessica Levina
, Taswin Prawira, Yulita Cindra, Jimmy Tandradynata
, Mercy Tiarmauli Panjaitan, Edho Yuwono
, Nurhadi Eko Firmansyah
, Retno Wahyuningsih
DOI: 10.12659/AJCR.952492
Am J Case Rep 2026; 27:e952492
679 1077 0

01 Jul 2026 : Case report
Starvation-Type Euglycemic Ketoacidosis After Unsupervised Tirzepatide Use in a Non-Obese, Non-Diabetic Woman
Eslam Elsayed Abdelshafey
, Khaled Sewify
, Atheer Almutairi, Ragheb Elmessery, Sara Alotaishan
, Yasmin Youssuf Al-Gindan, Manal Ali Ahmad
, Wael Gomaa
DOI: 10.12659/AJCR.952750
Am J Case Rep 2026; 27:e952750
1,149 2,465 0

01 Jul 2026 : Case report
Starvation-Type Euglycemic Ketoacidosis After Unsupervised Tirzepatide Use in a Non-Obese, Non-Diabetic Woman
Eslam Elsayed Abdelshafey
, Khaled Sewify
, Atheer Almutairi, Ragheb Elmessery, Sara Alotaishan
, Yasmin Youssuf Al-Gindan, Manal Ali Ahmad
, Wael Gomaa
DOI: 10.12659/AJCR.952750
Am J Case Rep 2026; 27:e952750
1149 2465 0

30 Jun 2026 : Case report
Delayed Thyroid Metastasis of Lung Adenocarcinoma Mimicking Primary Thyroid Carcinoma: A Case Report
Yen Thi Le
, Hau Xuan Nguyen, Thai Hong Le, Anh Tuan Doan Van, Duong Thai Pham
, Tuan Minh Vu, Hoang Van Nguyen
DOI: 10.12659/AJCR.952744
Am J Case Rep 2026; 27:e952744
861 1,831 0

30 Jun 2026 : Case report
Delayed Thyroid Metastasis of Lung Adenocarcinoma Mimicking Primary Thyroid Carcinoma: A Case Report
Yen Thi Le
, Hau Xuan Nguyen, Thai Hong Le, Anh Tuan Doan Van, Duong Thai Pham
, Tuan Minh Vu, Hoang Van Nguyen
DOI: 10.12659/AJCR.952744
Am J Case Rep 2026; 27:e952744
861 1831 0

29 Jun 2026 : Case report
Intraluminal Appendiceal Migration of an Intrauterine Device Without Appendicitis: A Case Report
Ángel Sánchez Tinajero
, Jusseline Villegas Amador
, Dulce Diana Guerra Aguirre
, Danna Patricia Ruiz Santillán
, María del Carmen Zamora López
, Anita Ríos Pérez
, Juan Ramón Razo Blancas
DOI: 10.12659/AJCR.951714
Am J Case Rep 2026; 27:e951714
671 1,079 0

29 Jun 2026 : Case report
Intraluminal Appendiceal Migration of an Intrauterine Device Without Appendicitis: A Case Report
Ángel Sánchez Tinajero
, Jusseline Villegas Amador
, Dulce Diana Guerra Aguirre
, Danna Patricia Ruiz Santillán
, María del Carmen Zamora López
, Anita Ríos Pérez
, Juan Ramón Razo Blancas
DOI: 10.12659/AJCR.951714
Am J Case Rep 2026; 27:e951714
671 1079 0

28 Jun 2026 : Case report
Management of a Severe Traumatic Intrusion of a Permanent Incisor With Spontaneous Re-Eruption After Maxillary Expansion: A Surgical-Orthodontic Case Report
Claudia Capurro
, Giulia Romanelli, Alessandro Vullo, Nicola Laffi
DOI: 10.12659/AJCR.952814
Am J Case Rep 2026; 27:e952814
692 1,602 0

28 Jun 2026 : Case report
Management of a Severe Traumatic Intrusion of a Permanent Incisor With Spontaneous Re-Eruption After Maxillary Expansion: A Surgical-Orthodontic Case Report
Claudia Capurro
, Giulia Romanelli, Alessandro Vullo, Nicola Laffi
DOI: 10.12659/AJCR.952814
Am J Case Rep 2026; 27:e952814
692 1602 0

27 Jun 2026 : Case report
Depicting Characteristic Staghorn Vessels in Solitary Fibrous Tumor of the Liver With Contrast-Enhanced Ultrasound and Ultrasound Localized Microscopy: A Case Report
Xue Lu
, Yuanqiang Xiao, Lili Wu, Jianning Chen
, An Liu
, Jie Ren, Yinglin Long
DOI: 10.12659/AJCR.952355
Am J Case Rep 2026; 27:e952355
689 1,204 0

27 Jun 2026 : Case report
Depicting Characteristic Staghorn Vessels in Solitary Fibrous Tumor of the Liver With Contrast-Enhanced Ultrasound and Ultrasound Localized Microscopy: A Case Report
Xue Lu
, Yuanqiang Xiao, Lili Wu, Jianning Chen
, An Liu
, Jie Ren, Yinglin Long
DOI: 10.12659/AJCR.952355
Am J Case Rep 2026; 27:e952355
689 1204 0

26 Jun 2026 : Case report
A Perfect MDS Mimic: Zinc-Driven Copper Deficiency After Gastric Bypass in a Patient Using Denture Adhesive
Farzeen Fatma Syed, Ye Lin Son, Jessica Amos
DOI: 10.12659/AJCR.952171
Am J Case Rep 2026; 27:e952171
822 1,418 0

26 Jun 2026 : Case report
A Perfect MDS Mimic: Zinc-Driven Copper Deficiency After Gastric Bypass in a Patient Using Denture Adhesive
Farzeen Fatma Syed, Ye Lin Son, Jessica Amos
DOI: 10.12659/AJCR.952171
Am J Case Rep 2026; 27:e952171
822 1418 0

24 Jun 2026 : Case report
Coexisting Amyloid Positivity and Probable Dementia With Lewy Bodies in a Patient With Rapid Eye Movement Sleep Behavior Disorder
Jae Hyeok Choi, Seungju Kim, Jaeyeong Bae
, Jiwon Lim
, Youngsoon Yang, Ik Dong Yoo
, Kwang Ik Yang
DOI: 10.12659/AJCR.952151
Am J Case Rep 2026; 27:e952151
871 1,342 0

24 Jun 2026 : Case report
Coexisting Amyloid Positivity and Probable Dementia With Lewy Bodies in a Patient With Rapid Eye Movement Sleep Behavior Disorder
Jae Hyeok Choi, Seungju Kim, Jaeyeong Bae
, Jiwon Lim
, Youngsoon Yang, Ik Dong Yoo
, Kwang Ik Yang
DOI: 10.12659/AJCR.952151
Am J Case Rep 2026; 27:e952151
871 1342 0

22 Jun 2026 : Case report
Suspected Adult-Onset Congenital Myasthenic Syndrome Associated With a Heterozygous CHRND Variant in a Patient With Seropositive Rheumatoid Arthritis: A Case Report
Khaled Abdulwahab Amer
, Hanan Hassan Almalki
, Faisal Saud Alhudaithi
DOI: 10.12659/AJCR.952887
Am J Case Rep 2026; 27:e952887
669 1,130 0

22 Jun 2026 : Case report
Suspected Adult-Onset Congenital Myasthenic Syndrome Associated With a Heterozygous CHRND Variant in a Patient With Seropositive Rheumatoid Arthritis: A Case Report
Khaled Abdulwahab Amer
, Hanan Hassan Almalki
, Faisal Saud Alhudaithi
DOI: 10.12659/AJCR.952887
Am J Case Rep 2026; 27:e952887
669 1130 0

21 Jun 2026 : Case report
When ST Elevation Is Not STEMI: Autonomic-Mediated Repolarization Abnormalities After Subarachnoid Hemorrhage
Anand Shah, Robin H. White
, Ziad Faramand, Sujoy Gulati
DOI: 10.12659/AJCR.952180
Am J Case Rep 2026; 27:e952180
854 1,369 0

21 Jun 2026 : Case report
When ST Elevation Is Not STEMI: Autonomic-Mediated Repolarization Abnormalities After Subarachnoid Hemorrhage
Anand Shah, Robin H. White
, Ziad Faramand, Sujoy Gulati
DOI: 10.12659/AJCR.952180
Am J Case Rep 2026; 27:e952180
854 1369 0

17 Jun 2026 : Case report
Chlamydia trachomatis Pneumonia in a 50-Day-Old Full-Term Male Infant Associated With Mucus Plugging of the Left Upper Lobe Bronchus and Left Upper Lobe Atelectasis
Yuan Huang
, Meixia Huang, Liqin Ke, Shuxian Li, Xiaofen Tao, Guohong Zhu
DOI: 10.12659/AJCR.953643
Am J Case Rep 2026; 27:e953643
656 1,351 0

17 Jun 2026 : Case report
Chlamydia trachomatis Pneumonia in a 50-Day-Old Full-Term Male Infant Associated With Mucus Plugging of the Left Upper Lobe Bronchus and Left Upper Lobe Atelectasis
Yuan Huang
, Meixia Huang, Liqin Ke, Shuxian Li, Xiaofen Tao, Guohong Zhu
DOI: 10.12659/AJCR.953643
Am J Case Rep 2026; 27:e953643
656 1351 0
In Press
Case report
Am J Case Rep In Press; DOI: 10.12659/AJCR.954216
Case report
Am J Case Rep In Press; DOI: 10.12659/AJCR.954932
Case report
Am J Case Rep In Press; DOI: 10.12659/AJCR.954146
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Am J Case Rep In Press; DOI: 10.12659/AJCR.953555
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