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Adenomatoid tumor

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https://www.readbyqxmd.com/read/29325584/adenomatoid-tumor-of-the-testis-mimicking-malignant-testicular-cancer-on-multiparametric-ultrasound
#1
Renate Pichler, Gennadi Tulchiner, Fabian Steinkohl, Afschin Soleiman, Wolfgang Horninger, Isabel Maria Heidegger, Friedrich Aigner
BACKGROUND: Adenomatoid tumor is one of the most common histological subtypes of paratesticular cancer arising from the epididymis. In very rare cases, these tumors appear as intratesticular lesions originating in the tunica albuginea, representing a diagnostic challenge. CASE PRESENTATION: We present a case of a 51-year-old man with a small (0.9 cm) hyperechoic lesion of the left testicle mimicking testicular cancer on multiparametric ultrasound. The lesion was localized in the peripheral zone, confirming vascularization and increased stiffness on contrast-enhanced ultrasound and real-time elastography...
January 11, 2018: European Journal of Medical Research
https://www.readbyqxmd.com/read/29302284/adenomatoid-odontogenic-tumor-case-series-of-14-with-wide-range-of-clinical-presentation
#2
Fatima Al-Shimari, Srinivasa Chandra, Dolphine Oda
Background: To present 14 cases of adenomatoid odontogenic tumor (AOT), highlighting their clinical, radiographic, and histologic characteristics. Material and Methods: Fourteen cases of AOT were retrieved from the archives of the Oral Pathology Biopsy Service (OPBS). Clinical, radiologic, and histologic findings are described. Results: Fourteen AOT cases were reviewed, of which 12 were intraosseous and two were peripheral (gingiva). The cases came from eight females and six males with an age range of 11-30...
November 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29259652/cytomorphological-spectrum-of-epididymal-nodules-an-institution-s-experience
#3
Jyotsna Naresh Bharti, Biswajit Dey, Jenna Bhattacharya, Shyama Jain
Background: Epididymal lesions are uncommon in clinical practice. Few case series has been described in the literature documenting the role of cytology in the evaluation of epididymal nodules. This study was undertaken to analyze the cytomorphology of epididymal nodules and to evaluate role of fine-needle aspiration biopsy (FNAB) in early definitive diagnosis of epididymal nodules. Materials and Methods: A total of seventy cases of epididymal nodules were aspirated over a period of 6 years in the Department of Pathology...
2017: CytoJournal
https://www.readbyqxmd.com/read/29241740/aberrant-pax-8-expression-in-well-differentiated-papillary-mesothelioma-and-malignant-mesothelioma-of-the-peritoneum-a-clinicopathologic-study
#4
Deyin Xing, Natalie Banet, Rajni Sharma, Russell Vang, Brigitte M Ronnett, Peter B Illei
Serous ovarian neoplasms can overlap morphologically with peritoneal mesothelial proliferations, with common features including well-differentiated papillary mesothelioma (WDPM) and malignant epithelioid mesothelioma (MM). Accurate histologic classification of these neoplasms is important for clinical management. The Pax-8 protein is commonly used for differentiating peritoneal MM from serous carcinoma, but the diagnostic value of Pax-8 for distinguishing WDPM from borderline or low-grade serous tumors is unknown...
December 11, 2017: Human Pathology
https://www.readbyqxmd.com/read/29214083/adenomatoid-odontogenic-tumor-associated-with-an-impacted-maxillary-lateral-incisor-a-case-report-with-five-year-follow-up
#5
Najwa Karam Genno, Nicole Aoun, Sami El Toum
Adenomatoid odontogenic tumor (AOT), a benign (hamartomatous) lesion of odontogenic origin, is an uncommon tumor which affects mainly females in the second decade. This lesion is most commonly associated with an impacted maxillary canine. This paper reported a case of AOT, in a 16-year-old female, associated with an impacted maxillary left lateral incisor. The evolution of this tumor was followed over 36 months and 24 months after excision.
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/29154985/adolescent-hydrocele-carrying-a-surprise-a-case-of-papillary-cystadenoma-of-the-epididymis
#6
A Soria Gondek, V Julià Masip, C Jou Muñoz, H Salvador Hernández, C Rovira Zurriaga, X Tarrado Castellarnau
Papillary cystadenoma of the epididymis (PCE) is a rare benign epithelial tumor remarkable for its association with Von Hippel-Lindau disease (VHLD). A 12-year-old male consulted for a progressive enlargement of the left testicle. At time of surgery, the whole epididymis was enlarged. Pathological diagnosis was PCE with a focus of borderline malignancy. Scrotal left epididymectomy was performed. VHLD screening was negative. No relapse has been detected two years later. In case of atypical clinical examination of a hydrocele, unusual presentations such as PCE should be considered...
November 15, 2017: Urology
https://www.readbyqxmd.com/read/29148537/adenomatoid-tumors-of-the-male-and-female-genital-tract-are-defined-by-traf7-mutations-that-drive-aberrant-nf-kb-pathway-activation
#7
Benjamin Goode, Nancy M Joseph, Meredith Stevers, Jessica Van Ziffle, Courtney Onodera, Eric Talevich, James P Grenert, Iwei Yeh, Boris C Bastian, Joanna J Phillips, Karuna Garg, Joseph T Rabban, Charles Zaloudek, David A Solomon
Adenomatoid tumors are the most common neoplasm of the epididymis, and histologically similar adenomatoid tumors also commonly arise in the uterus and fallopian tube. To investigate the molecular pathogenesis of these tumors, we performed genomic profiling on a cohort of 31 adenomatoid tumors of the male and female genital tracts. We identified that all tumors harbored somatic missense mutations in the TRAF7 gene, which encodes an E3 ubiquitin ligase belonging to the family of tumor necrosis factor receptor-associated factors (TRAFs)...
November 17, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29057177/a-rare-case-report-of-a-paratesticular-fibrous-pseudotumor-mimicking-a-hydrocele
#8
Srinivasan Dharanya, Chellappa Vijayakumar, Sundaramurthi Sudharsanan, Sadasivan Jagdish
Tumors arising in the spermatic cord are very rare. The common benign tumors of the spermatic cord include adenomatoid tumor, lipoma, neurofibroma, and leiomyoma. We report a rare case of fibrous pseudotumor of the spermatic cord presenting clinically as a hydrocele. A 28-year-old male presented with the complaint of swelling in the left scrotum, which gradually progressed in size over four years. Clinically, the swelling was soft and fluctuant. The left testis was not separately made out and a diagnosis of left hydrocele was made...
August 14, 2017: Curēus
https://www.readbyqxmd.com/read/28937386/bilateral-seminomas-coexisting-with-adenomatoid-tumor-an-unusual-occurrence
#9
Suchi Mittal, Rathindra Sarangi, Sunila Jain
Coexistence of bilateral seminomas and adenomatoid tumor is rare. We encountered an interesting case of bilateral testicular seminomas along with a paratesticular nodule which was diagnosed as an adenomatoid tumor on histology. Although seminomas and adenomatoid tumor are frequent neoplasms, bilaterality and their coexistence have been rarely described and can pose diagnostic difficulties. Herein, we describe a case of a 53-year-old man who presented with bilateral testicular swellings which were diagnosed as bilateral seminomas with an adenomatoid tumor in the left paratesticular region on histopathology...
July 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28863377/a-rare-case-report-of-an-adenomatoid-odontogenic-tumor-associated-with-odontoma-in-the-maxilla
#10
Agnes Assao, Diogo Loureiro de Freitas, Denise Tostes Oliveira
INTRODUCTION: The adenomatoid odontogenic tumor (AOT) associated with odontoma has been described as a new entity with overlapping features of adenomatoid-like structures and odontoma. Presentation of the case: We report the second case of AOT associated with odontoma in the posterior maxillary region. A 22-year-old patient presented expansion of the vestibular and palatine cortical wall of maxilla. Radiographic examination and computed tomography confirmed erosion of maxillary walls, root resorption, displacement of a neighboring tooth and radiopacities within the lesion...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28724848/laparoscopic-excision-of-a-uterine-adenomatoid-tumor-and-a-coexisting-ovarian-teratoma-a-case-report-and-literature-review
#11
REVIEW
Tomohiko Matsuhashi, Ryoko Matsui, Chikako Hasegawa, Tsutomu Hatori, Seiryu Kamoi, Toshiyuki Takeshita
Adenomatoid tumors (ATs) are rare, benign neoplasms occurring mainly in reproductive organs such as the uterus, ovaries, fallopian tubes, and testes. Uterine adenomatoid tumors (UATs) are generally incidentally diagnosed during histopathological examination of excisional biopsies performed for other indications, most commonly uterine leiomyomas. We herein present a 38-year-old woman who underwent laparoscopic excision of a uterine leiomyoma and a right ovarian teratoma. Microscopic examination of the excisional biopsy revealed that the enucleated uterine tumor was composed of proliferating glandular tissue covered with single-layered cells that were surrounded by proliferating smooth muscle cells, corresponding exactly to the features of UATs...
2017: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
https://www.readbyqxmd.com/read/28695322/the-tumor-entity-denominated-clear-cell-papillary-renal-cell-carcinoma-according-to-the-who-2016-new-classification-have-the-clinical-characters-of-a-renal-cell-adenoma-as-does-harbor-a-benign-outcome
#12
REVIEW
Francesco Massari, Chiara Ciccarese, Ondrej Hes, Michal Michal, Anna Caliò, Michelangelo Fiorentino, Francesca Giunchi, Alessandro D'Amuri, Francesca Sanguedolce, Roberto Sabbatini, Annalisa Guida, Andrea Ardizzoni, Camillo Porta, Roberto Iacovelli, Giampaolo Tortora, Luca Cima, Cinzia Ortega, Alberto Lapini, Guido Martignoni, Matteo Brunelli
The new WHO 2016 classification of renal neoplasia encounters the new entity called "clear cell papillary renal cell carcinoma" (ccpRCC). The ccpRCC has been long included as a subtype of clear cell RCC histotype and it actually ranges from 2 to 9% in different routinely available cohort of renal carcinomas. Of important note, ccpRCC does not show any recurrences or metastases or lymph-node invasion and the outcome is always good. We reviewed twenty-four publications with available follow-up for patients (no...
July 10, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28644571/difference-between-respiratory-epithelial-adenomatoid-hamartomas-and-small-malignant-tumours-of-the-olfactory-cleft-on-ct-scans-in-forty-six-patients
#13
T de Saint Hilaire, C Rumeau, P Gallet, P L Nguyen-Thi, R Jankowski, D T Nguyen
No abstract text is available yet for this article.
June 23, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28597929/next-generation-sequencing-of-oncogenes-and-tumor-suppressor-genes-in-odontogenic-myxomas
#14
Jean Nunes Santos, Ernesto Santos Sousa Neto, Josiane Alves França, Marina Gonçalves Diniz, Rennan Garcias Moreira, Wagner Henriques Castro, Ricardo Santiago Gomez, Silvia Ferreira de Sousa, Carolina Cavalieri Gomes
BACKGROUND: Mutations previously considered drivers of malignant neoplasms also occur in benign tumors. From the biological perspective, the study of malignant and benign neoplasms is equally relevant. The study of rare tumors contributes to the understanding of the more common ones, as both could share the same hallmark genetic drivers. The identification of driver mutations in benign tumors is facilitated by the fact that they harbor quiet genomes. Pathogenic mutations have being described in benign epithelial odontogenic tumors, such as ameloblastomas and adenomatoid odontogenic tumors...
June 8, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/28582342/expression-of-gata-3-in-testicular-and-gynecologic-mesothelial-neoplastic-and-non-neoplastic-tissues
#15
Arash Ronaghy, Guang-Qian Xiao, Eugene Santagada, Adnan Hasanovic, Pamela Unger
GATA-3 expression in testicular/gynecologic mesothelial neoplasms and benign mesothelia have not been completely investigated. We graded GATA-3, calretinin, and WT1 staining in 20 adenomatoid tumors [9/20 (para)testicular and 11/20 tubal/uterine] and 38 normal mesothelia (20/38 tunica vaginalis and 18/38 fallopian tubes) as either 0 (≤5%), +1 (>5% and <25%), +2 (≥25% and ≤50%), and +3 (>50%). Adenomatoid tumor GATA-3 staining: 2 urologic cases were positive (2/9, +3 and +1), no gynecologic cases were positive (0/11), and all were positive for WT1/calretinin (20/20,+2 to +3)...
June 2, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28479687/comparative-immunohistochemical-study-of-bcl-x-in-ameloblastoma-keratocystic-odontogenic-tumor-and-adenomatoid-odontogenic-tumor
#16
Payal Shukla, Sudeendra Prabhu, Maji Jose, B H Sripathi Rao
OBJECTIVES: Since its recognition as a physiologic process associated with tumor, among molecular mechanisms involved in tumor progression, defects in regulation of apoptosis have generated an accelerating volume of research that has sought to elucidate the role of programed cell death in pathogenesis and treatment of various tumors. Therefore, this study was performed to understand better the diverse biological profile of epithelial odontogenic tumors with the help of immunohistochemical expression of Bcl-X protein...
January 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28444451/new-tumor-entities-in-the-4th-edition-of-the-world-health-organization-classification-of-head-and-neck-tumors-nasal-cavity-paranasal-sinuses-and-skull-base
#17
REVIEW
Lester D R Thompson, Alessandro Franchi
The World Health Organization recently published the 4th edition of the Classification of Head and Neck Tumors, including several new entities, emerging entities, and significant updates to the classification and characterization of tumor and tumor-like lesions, specifically as it relates to nasal cavity, paranasal sinuses, and skull base in this overview. Of note, three new entities (NUT carcinoma, seromucinous hamartoma, biphenotypic sinonasal sarcoma,) were added to this section, while emerging entities (SMARCB1-deficient carcinoma and HPV-related carcinoma with adenoid cystic-like features) and several tumor-like entities (respiratory epithelial adenomatoid hamartoma, chondromesenchymal hamartoma) were included as provisional diagnoses or discussed in the setting of the differential diagnosis...
April 25, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28382483/images-in-endocrine-pathology-unique-composite-adrenal-adenomatoid-tumor-ganglioneuroma-myelolipoma-and-cortical-nodular-hyperplasia
#18
Eleonora Duregon, Marco Volante, Stefano Guzzetti, Ida Rapa, Simona Vatrano, Mauro Papotti
No abstract text is available yet for this article.
April 5, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28347316/trends-of-testis-sparing-surgery-for-pediatric-testicular-tumors-in-south-china
#19
Yun-Lin Ye, Qiu-Ming He, Fu-Fug Zheng, Sheng-Jie Guo, Fang-Jian Zhou, Zi-Ke Qin
BACKGROUND: Testis-sparing surgery is not popular in South China. This study aimed to investigate this procedure for pediatric testicular tumors. METHODS: Children with testicular benign tumors were retrospectively analyzed from January 2001 to June 2015 in the Sun Yat-sen University Cancer Center (SYSUCC) and the First Affiliated Hospital (SYSU-1st). Follow-up was performed until June 2016, and the proportions of TSS in the two hospitals during the different periods were compared...
March 27, 2017: BMC Surgery
https://www.readbyqxmd.com/read/28316917/a-comparative-study-of-syndecan-1-expression-in-different-odontogenic-tumors
#20
Shahroo Etemad-Moghadam, Mojgan Alaeddini
BACKGROUND: Expression of various cellular/molecular factors change during the course of tumor formation from odontogenic tissues of the tooth germ. Evaluation of these factors can help provide a better perception of the tumorigenesis and biologic behavior of odontogenic tumors (OTs). Syndecan-1 is a heparan sulfate proteoglycan which has not been extensively investigated in these lesions. The objective of the present study was to assess the immunohistochemical expression of CD138 in adenomatoid odontogenic tumor (AOT), ameloblastic fibroma (AF) and odontogenic myxoma (OM) and to compare it with ameloblastoma and keratocystic odontogenic tumor (KCOT)...
January 2017: Journal of Oral Biology and Craniofacial Research
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