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JOURNAL ARTICLE
Sherman Lin, Christopher Tran, Ela Bandari, Tommaso Romagnoli, Yueyang Li, Michael Chu, Abinaya S Amirthakatesan, Adam Dallmann, Andrii Kostiukov, Angel Panizo, Anjelica Hodgson, Anna R Laury, Antonio Polonia, Ashley E Stueck, Aswathy A Menon, Aurélien Morini, Birsen Özamrak, Caroline Cooper, Celestine Marie G Trinidad, Christian Eisenlöffel, Dauda E Suleiman, David Suster, David A Dorward, Eman A Aljufairi, Fiona Maclean, Gulen Gul, Irene Sansano, Irma E Erana-Rojas, Isidro Machado, Ivana Kholova, Jayanthi Karunanithi, Jean-Baptiste Gibier, Jefree J Schulte, Joshua J X Li, Jyoti R Kini, Katrina Collins, Laurence A Galea, Louis Muller, Luca Cima, Luiz M Nova-Camacho, Marcus Dabner, Matthew J Muscara, Matthew G Hanna, Mehdi Agoumi, Nicholas J P Wiebe, Nicola K Oswald, Nusrat Zahra, Olaleke O Folaranmi, Oleksandr Kravtsov, Orhan Semerci, Namrata N Patil, Preethi Muthusamy Sundar, Prem Charles, Priyadarshini Kumaraswamy Rajeswaran, Qi Zhang, Rachael van der Griend, Raghavendra Pillappa, Raul Perret, Raul S Gonzalez, Robyn C Reed, Sachin Patil, Xiaoyin Sara Jiang, Sumaira Qayoom, Susan Prendeville, Swikrity U Baskota, Thanh-Truc Tran, Thar-Htet San, Tiia-Maria Kukkonen, Timothy J Kendall, Toros Taskin, Tristan Rutland, Varsha Manucha, Vincent Cockenpot, Yale Rosen, Yessica P Rodriguez-Velandia, Zehra Ordulu, Matthew J Cecchini
Introduction. The identification of mitotic figures is essential for the diagnosis, grading, and classification of various different tumors. Despite its importance, there is a paucity of literature reporting the consistency in interpreting mitotic figures among pathologists. This study leverages publicly accessible datasets and social media to recruit an international group of pathologists to score an image database of more than 1000 mitotic figures collectively. Materials and Methods. Pathologists were instructed to randomly select a digital slide from The Cancer Genome Atlas (TCGA) datasets and annotate 10-20 mitotic figures within a 2 mm2 area...
April 16, 2024: International Journal of Surgical Pathology
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JOURNAL ARTICLE
C Van Der Pluijm, P Deprez, L Libbrecht, A Jouret-Mourin, H Dano
Sometimes non-neoplastic changes of the gastric mucosa mimic diffuse-type gastric carcinoma, specifically signet-ring cell adenocarcinoma. In fact, gastric epithelial cells undergoing signet-ring cell change have a cellular morphology that is almost identical to signet-ring cell adenocarcinoma, often leading to misdiagnosis. Accurate recognition of signet-ring cell change is essential to avoid overdiagnosis and overtreatment of signet-ring cell adenocarcinoma. Research on this topic is limited and clinicians lack formal diagnostic tools when signet-ring cells are detected in biopsy specimens...
April 7, 2024: International Journal of Surgical Pathology
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JOURNAL ARTICLE
Ankur R Sangoi, Kristyna Pivovarcikova, Mahmut Akgul, Sean R Williamson, Monica Ulamec, Joanna Dominica Rogala, Petr Martinek, Tomas Vanecek, Ondrej Hes, Reza Alaghehbandan
In addition to "classic" and eosinophilic subtype, chromophobe renal cell carcinoma (RCC) is well-known to demonstrate various morphological patterns including adenomatoid, microcystic, pigmented, multicystic, papillary, neuroendocrine-like, and small cell-like, all of which are important to appreciate for accurate diagnosis. Herein, we expand on a unique chromophobe RCC morphology not previously described consisting of tumor cells with extensive stromal retraction, mimicking upper urothelial tract micropapillary carcinoma (MPC)...
April 3, 2024: International Journal of Surgical Pathology
#4
JOURNAL ARTICLE
Ram Krishan, Sachita Pandey, Puja Sakhuja, Surbhi Goyal, Krishna Bhardwaj, B G Vageesh, Anil K Agarwal
Melanoma is a relatively rare malignancy with a highly aggressive biological behavior. Metastases to other sites, like lymph nodes and liver are common, but primary hepatic melanoma is a rarity with poor survival ranging from months to few years. Diagnosis of primary hepatic melanoma via clinical features and imaging technology is difficult because of its ambiguous features. Here, we present a 26-year-old North Indian woman admitted in the department of gastrointestinal surgery at our tertiary care hospital with the complaint of pain in the abdomen for a month associated with the loss of appetite and subsequent weight loss...
April 3, 2024: International Journal of Surgical Pathology
#5
JOURNAL ARTICLE
Luke Bushrow, Peter Kneuertz, William Maher, Konstantin Shilo
A 39-year-old woman originally from Northeast Africa sought medical attention for positional dyspnea. Computed tomography of the chest revealed an 8.5 cm hypodense anterior mediastinal mass with peripheral calcifications that raised a wide differential diagnosis including infectious and neoplastic lesions. Following surgical resection, a large cavitary necrotizing and calcified granuloma involving the thymus was identified on histopathological examination. The changes were associated with parasitic eggs that based on their morphology suggested infection due to trematode species...
April 3, 2024: International Journal of Surgical Pathology
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JOURNAL ARTICLE
Gianfranco E Umeres-Francia, Javier A Arias-Stella, Saro Manoukian, Leonidas Arvanitis
Glioblastoma, IDH-wildtype (GBM) is a high-grade astrocytic glioma that accounts for the majority of malignant brain tumors in adults. Within this entity, epithelioid GBM represents a histological subtype characterized by a loosely cohesive aggregate of large cells with abundant cytoplasm, and vesicular nuclei that usually harbors the BRAF V600E mutation. Molecular alterations in GBMs are frequent and play an important role in the diagnosis of this entity. Among the many genetic alterations reported, NTRK fusions are rare and account for <2% of gliomas...
April 1, 2024: International Journal of Surgical Pathology
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JOURNAL ARTICLE
Yao Sun, Wanrun Lin, Qiuqin Zou, Wenxin Zheng, Huijuan Zhang, Feng Zhou
OBJECTIVE: We investigate gastric-type endocervical adenocarcinoma (ECA), a prominent HPV-independent adenocarcinoma, and its coexistence with high-grade squamous intraepithelial lesion (HSIL) through the examination of three such tumors. METHODS: In this study, we conducted an in-depth review of three patients with gastric-type ECA, each associated with high-risk HPV infection as detected on Pap smears. We detailed the clinical and pathological features of each patient and utilized RNAscope for high-risk HPV testing to ascertain HPV status in both gastric-type ECA and HSIL components...
April 1, 2024: International Journal of Surgical Pathology
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JOURNAL ARTICLE
Susan K Potterveld, Sean R Williamson, Khaleel I Al-Obaidy, Mahmut Akgul, Emily Chan, Giovanna A Giannico, Ankur R Sangoi
Urothelial carcinoma and prostatic adenocarcinoma can have overlapping histologic features and in some instances pose challenges to pathologists. GATA binding protein 3 (GATA3) immunohistochemistry (IHC) is a well-established tool to aid in this specific diagnostic dilemma as it has been shown to be a sensitive marker for urothelial carcinoma and a putatively specific marker in excluding prostatic adenocarcinoma. However, in encountering an index tumor of prostatic adenosquamous carcinoma positive for GATA3, herein we sought to investigate this potential diagnostic pitfall in a larger series of tumors...
April 1, 2024: International Journal of Surgical Pathology
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JOURNAL ARTICLE
Liwei Jia, Bo Zhang, Daniel Shen, Prasad R Koduru
Well-differentiated neuroendocrine tumor rarely occurs as a testicular primary tumor, accounting for less than 1% of all testicular cancers, and is rarely reported with sufficient molecular profiles. After searching our departmental database (2003-2023), two testicular primary well-differentiated neuroendocrine tumors were identified in a 35-year-old man and a 23-year-old man, respectively, both of whom had normal serum level of tumor markers. Both tumors grossly exhibited solid, yellow-tan, and homogeneous appearance and histologically displayed a mixture of growth patterns, including organoid, tubular, cribriform, nests, cords, and single cells, were composed of eosinophilic tumor cells with salt-and-pepper chromatin and indistinct cell borders...
March 21, 2024: International Journal of Surgical Pathology
#10
JOURNAL ARTICLE
Hovsep Ohan, Fatimah I Alruwaii, Joseph Montecalvo, Khaleel I Al-Obaidy
No abstract text is available yet for this article.
March 21, 2024: International Journal of Surgical Pathology
#11
JOURNAL ARTICLE
Michael Magguilli, Cody Thomas, Evan Fowle
Recent changes to medical terminology and nomenclature have made strides to improve ethical integrity in healthcare. Removing tarnished eponymous namesakes and depreciative descriptions from the medical lexicon is a challenging, but righteous undertaking. In this article, the authors propose replacing the pejorative histologic description of "Indian file" with "Tusken Raider file."
March 21, 2024: International Journal of Surgical Pathology
#12
JOURNAL ARTICLE
Federico Repetto, Carmen M Perrino, Michelle S Hirsch
Ovarian-type (ie, Mullerian) epithelial tumors occurring in the testicular and paratesticular regions are exceptionally rare, with only a handful reported worldwide. Serous tumors are the most frequently encountered subtype among these rare tumors. The pathogenesis of these tumors within the testicular and paratesticular regions remains a subject of intrigue and debate, with various hypotheses attempting to explain their presence in the paratestis region, where most tumors occur. However, our understanding of the pathogenesis of intratesticular tumors is limited...
March 21, 2024: International Journal of Surgical Pathology
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JOURNAL ARTICLE
Daniel Christensen, Jeffrey A Belair, Atrayee BasuMallick, Scot A Brown, Michael Klein, Wei Jiang
A 23-year-old female patient presented with radicular back pain, perineal numbness, and urinary retention. The patient was diagnosed with cauda equina syndrome and magnetic resonance imaging (MRI) of the spine revealed an enhancing osseous lumbar lesion causing severe central stenosis. A core needle biopsy of the lumbar spine showed microscopic features compatible with a small round blue cell tumor. CD99 and FLI1 were positive in the tumor cells. Next-generation sequencing demonstrated a EWSR1::FLI1 fusion...
March 20, 2024: International Journal of Surgical Pathology
#14
JOURNAL ARTICLE
Patrick Mullane, Sean R Williamson, Ankur R Sangoi
INTRODUCTION: As the list of histologic parameters to include in surgical pathology reports of prostate cancer biopsies grows, some pathologists include this information in the microscopic description or summary sections of the report, whereas others include it in the "topline" or final diagnosis section. This prompted us to develop a multi-institutional survey to assess reporting trends among genitourinary (GU) pathologists. METHODS: A survey instrument was shared among 110 GU pathologists via surveymonkey...
March 20, 2024: International Journal of Surgical Pathology
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JOURNAL ARTICLE
Cheng Si, Yihuan Wang, Jinghua Zhu
Rhabdomyosarcoma is a highly malignant tumor with striated muscle differentiation, which is histologically classified as alveolar, embryonal, pleomorphic, and spindle cell/sclerosing histological subtype. Rhabdomyosarcoma with TFCP2 rearrangement, which usually occurs in the bone, is a newly identified rare spindle and epithelioid rhabdomyosarcoma with characteristic clinicopathological features and molecular alterations. We report a 39-year-old female patient who underwent local excision of the mandibular lesion...
March 18, 2024: International Journal of Surgical Pathology
#16
JOURNAL ARTICLE
Fnu Sonam, Miglena K Komforti, James W Jakub, Lauren F Cornell, Kristin A Robinson
Papillary carcinoma of the breast is a rare histologic subtype of invasive breast cancer. In contrast, ductal carcinoma in situ (DCIS) is a noninvasive, nonobligate precursor to invasive mammary carcinoma, confined within the terminal duct lobular unit of the breast and surrounded by an intact myoepithelial cell layer at the stromal/epithelial interface. We present an unusual case in which a patient with only DCIS of the breast exhibited papillary carcinoma within a sentinel lymph node, leading to questions about the origin of the lymph node lesion-whether it represents a true metastasis or iatrogenic displacement during diagnostic procedures...
March 18, 2024: International Journal of Surgical Pathology
#17
JOURNAL ARTICLE
Rana Chakrabarti, Sherman Lin, Hui Wang, Matthew Cecchini
SMARCA4-deficient undifferentiated tumors (SMARCA4-UT) are a newly described entity and are typically seen in the thoracic cavity. However, these tumors have been described in other body sites, including the esophagus. These tumors are rare, aggressive neoplasms, characterized by the loss of protein product of SMARCA4 (Brahma-related gene-1) and the preservation of INI1 (SMARCB1) expression. Here, we present two tumors of SMARCA4-UT of the esophagus with its microscopic appearance and immunohistochemical profile...
March 18, 2024: International Journal of Surgical Pathology
#18
JOURNAL ARTICLE
Rabiah Farhan, Badr AbdullGaffar, Laila Al-Dabal
Comorbidities between tuberculosis and leprosy are expected in endemic regions. Pulmonary tuberculosis and cutaneous leprosy are the most prevalent coinfections. One of the common manifestations of tuberculosis is generalized lymphadenopathy. In contrast, leprosy is clinically less suspected to manifest as a generalized lymphadenopathy, and it is pathologically unusual to diagnose leprosy primarily in lymph nodes. Concomitant tuberculous and lepromatous lymphadenitis are unprecedented and clinically unexpected, particularly in nonendemic countries...
March 18, 2024: International Journal of Surgical Pathology
#19
JOURNAL ARTICLE
Anupam Mitra, Kristen M Vandewalker
Hibernoma is a relatively uncommon benign neoplasm of brown adipose tissue which usually affects head and neck region, thigh and rarely breast. There are different subtypes of hibernoma with the spindle cell-type is the least common one. Herein, we are reporting a case of this rare spindle cell hibernoma in a location which has not been previously reported: perinephric adipose tissue. This tumor was presented as a renal mass on imaging.
March 18, 2024: International Journal of Surgical Pathology
#20
JOURNAL ARTICLE
Nada Shaker, Omar P Sangueza, Nuha Shaker, Megan Arthur, Dinesh Pradhan
Background. Fixed drug eruption and Rowell syndrome stand as intriguing entities with overlapping clinical and pathological features. Case Presentation . A 32-year-old female patient presented with a tender and pruritic rash on the left upper chest for 3 days. Clinical examination revealed a flaring rash on the chest, under her left eye, tongue, and lips. The patient had a significant past medical history of systemic lupus erythematous with positive (ANA, Sm, dsDNA, ribosomalP, RNP) antibodies, hypocomplementemia, inflammatory arthritis, discoid lupus, leukopenia, thrombocytopenia, and immune thrombocytopenic purpura, and avascular necrosis affecting both hips and her right knee...
March 18, 2024: International Journal of Surgical Pathology
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