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https://www.readbyqxmd.com/read/29351804/a-metastasized-hepatocellular-carcinoma-in-the-capsule-of-an-undescended-testis-in-the-right-inguinal-area-report-of-a-rare-case
#1
Qianhui Li, Xiuying Shi, Chuifeng Fan
BACKGROUND: Hepatocellular Carcinoma (HCC) is the most common primary carcinoma of the liver, which mainly metastasizes through the portal vein system. CASE PRESENTATION: Here, we report an extremely rare case in which HCC metastasized to the capsule of an undescended testis in the right inguinal area of the patient. A tumor approximately 8.8 × 7.0 cm in size was found in the patient's liver during a health check-up. Initially, it was considered a metastatic tumor because the patient was found to have cryptorchidism, which had been left untreated before he presented to our hospital...
January 19, 2018: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29346217/pathological-and-molecular-aspects-to-improve-endoscopic-ultrasonography-guided-fine-needle-aspiration-from-solid-pancreatic-lesions
#2
Hiroyuki Matsubayashi, Keiko Sasaki, Sachiyo Ono, Masato Abe, Hirotoshi Ishiwatari, Akira Fukutomi, Katsuhiko Uesaka, Hiroyuki Ono
Endoscopic ultrasonography-guided fine-needle aspiration (EUS-FNA) has been applied to pancreatic lesions since the 1990s, and its use is now widespread. Improvements in endoscopic devices and sampling techniques have resulted in excellent diagnostic ability for solid pancreatic lesions. However, clinical improvements alone are not responsible for it; pathological aspects have also played important roles. Rapid on-site evaluation minimizes endoscopic procedures, although its value at improving the diagnostic ratio is still debated...
February 2018: Pancreas
https://www.readbyqxmd.com/read/29345316/histopathological-findings-in-pregnancy-associated-cutaneous-hyperpigmentation
#3
Angel Fernandez-Flores, Juan Manuel Barja, Alejandro Vilas-Sueiro, Antonio Alija
Hyperpigmentation in pregnancy is a common phenomenon, experienced to some degree by up to 90% of pregnant women. It mainly involves sun-exposed areas, but it can extend to non-exposed zones. Cases with extensive hyperpigmentation are rarely reported. In this paper, we describe the case of a 30-year-old phototype V woman in her 37th week of pregnancy, who presented with brownish hyperpigmentation of the skin in extensive areas, including both axillae, the abdomen, and the lowest part of the back. In the abdomen, there was a reinforcement of the hyperpigmentation through the linea nigra and the umbilicus...
January 18, 2018: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/29341470/cytological-features-of-mixed-adenoneuroendocrine-carcinoma-of-the-ampulla-of-vater-a-case-report-with-immunocytochemical-analyses
#4
Saya Yoshioka, Yusuke Ebisu, Mitsuaki Ishida, Yoshiko Uemura, Hiroaki Yanagimoto, Sohei Satoi, Koji Tsuta
Mixed adenoneuroendocrine carcinoma (MANEC) is defined as a tumor that has morphologically recognizable both adenocarcinoma and neuroendocrine carcinoma components comprising at least 30% of either components. MANEC occurring in the ampulla of Vater is extremely rare, and only 16 cases have been reported in the English language literature. In the present report, we describe the first case of MANEC of the ampulla of Vater with immunocytochemical analyses. An 82-year-old Japanese male was incidentally found to have a tumorous lesion in the ampulla of Vater...
January 16, 2018: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/29341232/histological-features-and-outcome-of-inverted-type-a-melanocytic-nevi
#5
Soheil S Dadras, Jun Lu, Artur Zembowicz, Thomas J Flotte, Martin C Mihm
The presence of enlarged epithelioid/spindled nests located deep in the reticular dermis of a biphasic melanocytic neoplasm can mimic melanoma arising in a preexisting nevus, causing over-interpretation of malignancy. We aimed to define the clinicopathologic significance of epithelioid/spindled nests in melanocytic nevi. Retrospectively using clinical and histologic information, we characterized 121 patients with a single lesion showing epithelioid/spindled melanocytes in the reticular dermis or subcutaneous fat, surrounded by melanophages, sometimes blending in with the adnexa...
January 17, 2018: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/29332027/phyllodes-tumors-of-the-breast-clinicopathological-analysis-of-106-cases-from-a-single-institution
#6
Boubacar Efared
BACKGROUND: Phyllodes tumors (PT) are uncommon biphasic tumors, accounting for less than 1% of all breast primary neoplasms. They form a wide variety of tumors ranging from benign to malignant. Several histological features are used to grade PT into 3 categories: benign (grade I), borderline (grade II) and malignant (grade III) tumors. The aim of our study was to analyse histolopathological, radiological and clinical features of PT from an experience of a single center. METHODS: It was a retrospective study including 106 patients diagnosed with phyllodes tumors on surgical specimens at the department of pathology, of Hassan II university hospital (Fez, Morocco), from 2009 to 2016...
January 10, 2018: Breast Disease
https://www.readbyqxmd.com/read/29327706/nuclear-grade-and-necrosis-predict-prognosis-in-malignant-epithelioid-pleural-mesothelioma-a-multi-institutional-study
#7
Lauren E Rosen, Theodore Karrison, Vijayalakshmi Ananthanarayanan, Alexander J Gallan, Prasad S Adusumilli, Fouad S Alchami, Richard Attanoos, Luka Brcic, Kelly J Butnor, Françoise Galateau-Sallé, Kenzo Hiroshima, Kyuichi Kadota, Astero Klampatsa, Nolween Le Stang, Joerg Lindenmann, Leslie A Litzky, Alberto Marchevsky, Filomena Medeiros, M Angeles Montero, David A Moore, Kazuki Nabeshima, Elizabeth N Pavlisko, Victor L Roggli, Jennifer L Sauter, Anupama Sharma, Michael Sheaff, William D Travis, Wickii T Vigneswaran, Bart Vrugt, Ann E Walts, Melissa Y Tjota, Thomas Krausz, Aliya N Husain
A recently described nuclear grading system predicted survival in patients with epithelioid malignant pleural mesothelioma. The current study was undertaken to validate the grading system and to identify additional prognostic factors. We analyzed cases of epithelioid malignant pleural mesothelioma from 17 institutions across the globe from 1998 to 2014. Nuclear grade was computed combining nuclear atypia and mitotic count into a grade of I-III using the published system. Nuclear grade was assessed by one pathologist for three institutions, the remaining were scored independently...
January 12, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29324473/chondromyxoid-fibroma-arising-in-craniofacial-sites-a-clinicopathologic-analysis-of-25-cases
#8
David M Meredith, Christopher D M Fletcher, Vickie Y Jo
Chondromyxoid fibroma (CMF) is a rare benign tumor, usually arising in the metaphysis of long bones in young adults. Occurrence in craniofacial bones presents a particular diagnostic challenge given its unusual location and resemblance to malignant mimics. We describe the clinicopathologic features of 25 cases of craniofacial CMF identified between 1999 and 2017. Patients were 14 men and 11 women, with median age of 44 years (range, 5 to 83 y). Sites of involvement were sphenoid (7), ethmoid (5), maxilla (3), occipital (2), nasal septum (2), palatine (2), temporal (2), orbit (1), and undisclosed skull (1)...
January 10, 2018: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29324470/fibroma-like-pecoma-a-tuberous-sclerosis-complex-related-lesion
#9
Ana B Larque, Richard L Kradin, Ivan Chebib, G Petur Nielsen, Martin K Selig, Elizabeth A Thiele, Anat Stemmer-Rachamimov, Miriam A Bredella, Pawel Kurzawa, Vikram Deshpande
Perivascular epithelioid cell tumor (PEComa), mesenchymal tumors morphologically characterized by epithelioid cells, coexpress melanocytic and muscle markers. Herein, we describe a heretofore-undescribed tuberous sclerosis complex (TSC)-related neoplasm, morphologically resembling a soft tissue fibroma-like lesion, but showing an immunophenotype resembling PEComa. We identified 3 soft tissue fibroma-like lesions in individuals with TSC. We also evaluated 6 TSC-related periungual fibroma as well as a range of non-TSC fibroma-like lesions (n=19)...
January 10, 2018: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29323551/gamma-imaging-guided-minimally-invasive-breast-biopsy-initial-clinical-experience
#10
Rachel F Brem, Anita K Mehta, Jocelyn A Rapelyea, Esma A Akin, Adriana M Bazoberry, Christel D Velasco
OBJECTIVE: The purpose of this study was to evaluate our initial experience with gamma imaging-guided vacuum-assisted breast biopsy in women with abnormal findings. MATERIALS AND METHODS: A retrospective review of patients undergoing breast-specific gamma imaging (BSGI), also known as molecular breast imaging (MBI), between April 2011 and October 2015 found 117 nonpalpable mammographically and sonographically occult lesions for which gamma imaging-guided biopsies were recommended...
January 11, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29323077/epidermoid-cyst-of-the-renal-pelvis-masquerading-as-malignancy
#11
Dinesh Pradhan, Gabriela Quiroga-Garza, Ronald Hrebinko, Rajiv Dhir, Anil V Parwani
Epidermoid cyst of the renal pelvis is exceptionally rare. The histogenetic mechanism has not been well characterized. Herein, we report a case of intrarenal epidermoid cyst in a 62-year-old woman who had undergone left nephrolithotomy for a staghorn calculus. She was being followed up for bilateral renal cysts when a complex mass was noted arising from the lower pole of the left kidney. Renal ultrasound showed a small left kidney with a solid vascular echogenic mass. A laparoscopic radical nephrectomy was performed...
October 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/29317955/pattern-of-thyroid-lesions-in-western-region-of-saudi-arabia-a-retrospective-analysis-and-literature-review
#12
Muhammad I Saeed, Amal Ali Hassan, Muhammad Ejaz Butt, Khalid Ali Baniyaseen, Muhammad I Siddiqui, Neda M Bogari, Faisal A Al-Allaf, Mohiuddin M Taher
Background: Ultrasonography (US) is being recognized as a traditional way of the diagnosis of various thyroid disorders, and this will help in detecting the thyroid tumors in early stage. Thyroid nodules are common and usually benign; steps to diagnose malignancy should include a careful clinical evaluation, laboratory tests, a thyroid US exam and a fine-needle aspiration (FNA) biopsy. Methods: A total of 173 registered cases were used for analysis in this study...
February 2018: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/29315498/peritoneal-carcinomatosis-after-risk-reducing-surgery-in-brca1-2-mutation-carriers
#13
Marline G Harmsen, Jurgen M J Piek, Johan Bulten, Murray J Casey, Timothy R Rebbeck, Marian J Mourits, Mark H Greene, Brigitte F M Slangen, Marc van Beurden, Leon F A G Massuger, Nicoline Hoogerbrugge, Joanne A de Hullu
BACKGROUND: Risk-reducing salpingo-oophorectomy (RRSO) is recommended for BRCA1/2 mutation carriers because of their increased risk of ovarian carcinoma. Despite RRSO, metachronous peritoneal carcinomatosis occasionally is diagnosed. METHODS: The literature was searched for BRCA1/2 mutation carriers with peritoneal carcinomatosis after risk-reducing surgery. The authors were asked for additional data. Clinical and histopathological data were descriptively analyzed...
January 9, 2018: Cancer
https://www.readbyqxmd.com/read/29312762/ciliated-muconodular-papillary-tumor-of-the-lung-harboring-braf-v600e-mutation-and-p16ink4a-overexpression-without-proliferative-activity-may-represent-an-example-of-oncogene-induced-senescence
#14
Lucia Kim, Young Sam Kim, Jin Soo Lee, Suk Jin Choi, In Suh Park, Jee Young Han, Joon Mee Kim, Young Chae Chu
Ciliated muconodular papillary tumor (CMPT) is a rare peripheral lung tumor that shows puzzling histologic features encompassing metaplastic and neoplastic nature. This type of tumor is occasionally misdiagnosed as lung adenocarcinoma clinically and pathologically, and its pathogenic mechanism has not been well characterized. We experienced a case of CMPT in a 73-year-old male and performed targeted deep sequencing to characterize its molecular features. The tumor was an ill-defined, subpleural, and non-endobronchial nodule showing glandular and papillary proliferation of mucous cells, ciliated columnar cells, and basal cells without any cytologic atypia...
December 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29311493/cellular-atypia-is-negatively-correlated-with-immunohistochemical-reactivity-of-cd31-and-vwf-expression-levels-in-canine-hemangiosarcoma
#15
Aprilia Maharani, Keisuke Aoshima, Shinichi Onishi, Kevin Christian Montecillo Gulay, Atsushi Kobayashi, Takashi Kimura
Canine hemangiosarcoma (HSA) is one of the most common mesenchymal tumors in dogs. Its high metastatic and growth rates are usually associated with poor prognosis. Neoplastic cells of HSA can show various levels of cellular atypia in the same mass and may consist of various populations at different differentiated stages. Up to present, however, there is no report analyzing their differentiation states by comparing cellular atypia with differentiation-related protein expressions. To evaluate whether cellular atypia can be used as a differentiation marker in HSA, we analyzed correlation between cellular atypia and intensities of CD31 and von Willebrand Factor (vWF) staining in HSA cases...
January 1, 2018: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29310888/secondary-hyperparathyroidism-causing-increased-jaw-bone-density-and-mandibular-pain-a-case-report
#16
Thomas Aerden, Koenraad Grisar, Margaux Nys, Constantinus Politis
We present the case of a 32-year-old male patient complaining of recurrent mandibular pain for 3.5 years. Panoramic radiography indicated increased cortical density of the mandibular lower border. Scintigraphy and single-photon emission computed tomography revealed metabolic hyperactivity in that region without pathologic lymph nodes. A bone biopsy specimen of the mandibular lower border did not have inflammation or cytologic atypia. Endocrinologic investigation confirmed secondary hyperparathyroidism as a result of hypovitaminosis D...
December 7, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29310366/scrotum-solitary-fibrous-tumor-a-case-report-and-review-of-literature
#17
Xue-Yan Zhao, Ming Zeng, Qiu-Yan Yang, Cai-Ping Jing, Yu Zhang
BACKGROUND: A solitary fibrous tumor (SFT) is a rare clinical tumor, often manifesting as solitary nodules. It is a rare condition that occurs in the scrotum. Currently, no study has reported this condition. CASE SUMMARY: We reported a case of an SFT in a 77-year-old man, and discuss its diagnosis, differential diagnosis, and treatment. Clinical and histopathological features, as well as the EnVision 2-step method, were used to diagnosis the SFT. The results of imaging tests and surgery indicated that the SFT was located in the right scrotum with 2 connected tumor nodules and a clear perimeter...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29298171/expression-of-%C3%AE-v-tubulin-in-secretory-cells-of-the-fallopian-tube-epithelium-marks-cellular-atypia
#18
Deepti Mathew, Yanhua Wang, Anne Van Arsdale, Susan Band Horwitz, Hayley McDaid
OBJECTIVES: Class V Beta tubulin isotype (βV-tubulin) was recently found to have tissue-specific expression patterns in epithelial tissues with secretory function and aberrant expression in tumors. The aims of this pilot study were (a) to examine expression of βV-tubulin in the fallopian tube epithelium (FTE) of patients who underwent salpingectomy, (b) to characterize FTE atypia in high-risk patients with BRCA mutations, and (c) to determine expression of βV-tubulin in serous ovarian neoplasms...
January 3, 2018: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/29297491/high-grade-prostatic-intraepithelial-neoplasia-pin-like-carcinoma-ductal-carcinoma-and-intraductal-carcinoma-of-the-prostate
#19
Ming Zhou
Many prostate lesions have 'large gland' morphology with gland size similar to or larger than benign glands, complex glandular architecture including papillary, cribriform, and solid, and significant cytological atypia in glandular epithelium with nucleomegaly, prominent nucleoli, or anisonucleosis. The most common and clinically important lesions with 'large gland' morphology include high-grade prostatic intraepithelial neoplasia (HGPIN), PIN-like carcinoma, ductal adenocarcinoma, and intraductal carcinoma...
January 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29297490/prostate-cancer-diagnostic-criteria-and-role-of-immunohistochemistry
#20
Cristina Magi-Galluzzi
The diagnosis of prostate cancer is based on microscopic criteria. Presently, prostate needle biopsy interpretation can be a challenge for the pathologist due to the increased number of specimens with limited amount of suspicious glands and minimal atypia. It is critical for the pathologist to have an organized methodical approach when considering the morphological features enabling a definitive diagnosis of prostate cancer. Although several diagnostic criteria and supportive features have been advocated, only few findings are absolutely specific and diagnostic of prostate cancer...
January 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
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