scholarly journals Epithelioid angiosarcoma of the small intestine presenting with intractable gastrointestinal bleeding: An uncommon tumor with diagnostic challenge and poor prognosis

2021 ◽  
Vol 8 (1) ◽  
pp. 17
Author(s):  
Chinelo Pamela Onyenekwu ◽  
Reena Singh ◽  
James Adam Miller ◽  
Mohamed Mostafa
Keyword(s):  
Small Intestine ◽  
Gastrointestinal Bleeding ◽  
Relevant Literature ◽  
Malignant Neoplasm ◽  
Malignant Neoplasms ◽  
Small Intestinal Mucosa ◽  
Diagnostic Challenge ◽  
Epithelioid Angiosarcoma ◽  
Diagnostic Features ◽  
Diagnostic Dilemma

Introduction: Angiosarcoma of the gastrointestinal tract is a rare, aggressive malignant neoplasm of vascular origin. Commonly, this tumor occurs due to metastases from other sites like the head and neck region and the soft tissue. When occurring as a primary tumor of the intestines, this entity poses a diagnostic dilemma due to its non-specific clinical presentation, coupled to its infiltrative features that may occur without an obvious lesion amenable to routine gastrointestinal interventions. The findings from an autopsy and surgical case with a brief review of its diagnostic features and relevant literature are discussed.Methods: We present a 73-year-old male with a history of a recent onset of gastrointestinal bleeding who was referred to our facility for persisting bleeding. He underwent endoscopy without an identifiable source of bleeding and subsequently received a colectomy at our facility, with repeated blood transfusions for persisting gastrointestinal bleeding. He was eventually transitioned to hospice and died shortly after presentation. A complete autopsy was performed.Results: There was anasarca with hemoperitoneum and intestinal intraluminal blood. Present in the small intestinal mucosa were three hemorrhagic nodules. Histologically, the nodules demonstrated medium to large epithelioid vasoformative neoplastic cells infiltrating through the wall of the small intestine and extending to the omentum. The findings from the gross and histology examination, as well as the immunohistochemical stains were consistent with an epithelioid angiosarcoma.Conclusion: Primary epithelioid angiosarcoma of the intestine is an uncommon aggressive tumor that poses a diagnostic challenge. Although rare, this diagnosis needs to be considered in patients with intractable gastrointestinal bleeding. Due to its morphologic overlap with other benign and malignant neoplasms, the use of ancillary testing during histologic examination is key in arriving at an accurate diagnosis.

Immunohistochemical evaluation of suspected oral malignant melanoma in cats

2021 ◽  
pp. 030098582110257
Author(s):  
Kelly M. Saverino ◽  
Amy C. Durham ◽  
Matti Kiupel ◽  
Alexander M. Reiter
Keyword(s):  
Malignant Melanoma ◽  
Malignant Neoplasm ◽  
Malignant Neoplasms ◽  
Survival Times ◽  
Diagnostic Challenge ◽  
Positive Expression ◽  
Biopsy Report ◽  
Oral Neoplasms ◽  
Oral Malignant Melanoma ◽  
Variable Morphology

Oral malignant melanoma (OMM) is considered the third most common oral malignant neoplasm in cats, but its variable morphology and frequent lack of melanin pigment make it a diagnostic challenge. Twenty-two cases of cats with malignant oral neoplasms that were diagnosed as OMM or listed OMM as a suspected differential diagnosis on the biopsy report were examined using an immunohistochemistry (IHC) panel for S100, melan-A, PNL2, laminin, CD34, and pan-cytokeratin. Although OMM was suspected ( n = 14) or previously diagnosed ( n = 8), only 2 cases were immunohistochemically confirmed as OMM. Seven cases were classified as soft tissue sarcoma based on positive expression of CD34 or laminin, and one was classified as carcinoma based on positive expression of pan-cytokeratin. The majority of cases ( n = 12) were categorized as unclassified malignant neoplasms because they did not express melan-A, PNL2, laminin, CD34, or pan-cytokeratin; however, a proportion of these did express S100 ( n = 7). Long-term prognosis of all 22 cats was poor, with a median survival time of 87 days (range = 2–249 days). Cases with longer survival times (>100 days) were treated with surgery, radiation therapy, or a combination. For feline oral malignant neoplasms thought to be OMM, routine use of IHC is required for an accurate diagnosis.

scholarly journals Proteomic Analysis of Zeb1 Interactome in Breast Carcinoma Cells

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3143
Author(s):  
Sergey E. Parfenyev ◽  
Sergey V. Shabelnikov ◽  
Danila Y. Pozdnyakov ◽  
Olga O. Gnedina ◽  
Leonid S. Adonin ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Epithelial To Mesenchymal Transition ◽  
Critical Role ◽  
Malignant Neoplasm ◽  
Malignant Neoplasms ◽  
Breast Cancer Patients ◽  
Survival Prognosis ◽  
Mesenchymal Transition ◽  
Wide Range

Breast cancer is the most frequently diagnosed malignant neoplasm and the second leading cause of cancer death among women. Epithelial-to-mesenchymal Transition (EMT) plays a critical role in the organism development, providing cell migration and tissue formation. However, its erroneous activation in malignancies can serve as the basis for the dissemination of cancer cells and metastasis. The Zeb1 transcription factor, which regulates the EMT activation, has been shown to play an essential role in malignant transformation. This factor is involved in many signaling pathways that influence a wide range of cellular functions via interacting with many proteins that affect its transcriptional functions. Importantly, the interactome of Zeb1 depends on the cellular context. Here, using the inducible expression of Zeb1 in epithelial breast cancer cells, we identified a substantial list of novel potential Zeb1 interaction partners, including proteins involved in the formation of malignant neoplasms, such as ATP-dependent RNA helicase DDX17and a component of the NURD repressor complex, CTBP2. We confirmed the presence of the selected interactors by immunoblotting with specific antibodies. Further, we demonstrated that co-expression of Zeb1 and CTBP2 in breast cancer patients correlated with the poor survival prognosis, thus signifying the functionality of the Zeb1–CTBP2 interaction.

scholarly journals Small Cell Ovarian Cancer in Adolescents: Report of Two Cases and Review of the Literature

2011 ◽  
Vol 2011 ◽  
pp. 1-4 ◽  
Author(s):  
M. Rovithi ◽  
A. G. Pallis ◽  
A. Kalykaki ◽  
E. Lagoudaki ◽  
L. Giannikaki ◽  
...  
Keyword(s):  
Ovarian Cancer ◽  
Cell Carcinoma ◽  
Small Cell Carcinoma ◽  
Combination Chemotherapy ◽  
Poor Prognosis ◽  
Relevant Literature ◽  
Malignant Neoplasm ◽  
Standard Of Care ◽  
Small Cell ◽  
Review Of The Literature

Ovarian small cell carcinoma is a rare and highly malignant neoplasm carrying a poor prognosis. Although combination chemotherapy remains the cornerstone of treatment due to the rarity of these tumors, no regimen can be recommended as standard of care although in the majority of cases platinum-based regimens are used. Herein, we report two cases of small cell carcinoma of the ovaries along with a review of the relevant literature.

Carbohydrase activity in the pancreatic tissue and small intestine mucosa of sheep fed dried-grass or ground maize-based diets

1985 ◽  
Vol 104 (2) ◽  
pp. 435-443 ◽  
Author(s):  
A. N. Janes ◽  
T. E. C. Weekes ◽  
D. G. Armstrong
Keyword(s):  
Small Intestine ◽  
Amylase Activity ◽  
Total Activity ◽  
Pancreatic Tissue ◽  
Proximal Region ◽  
Small Intestinal Mucosa ◽  
Intestine Mucosa ◽  
Ruminant Animals ◽  
Specific Activities ◽  
Small Intestinal

SummaryTwo groups of six sheep were fed either dried-grass or ground maize-based diets for at least 4 weeks before slaughter. Samples of the small intestinal mucosa and spancreatic tissue were assayed for a-amylase, glucoamylase, maltase and oligo-l,6-glucosidase.The pancreatic tissue contained high activities of α-amylase and much lower activities of glucoamylase, maltase and oligo-1,6-glucosidase. There was no effect of diet on the specific activities of any of these enzymes in the pancreatic tissue.The activity of α-amylase adsorbed on to the mucosa of the small intestine was greatest in the proximal region of the small intestine, the activity generally declining with increasing distance away from the pylorus. There was no diet effect on the absorbed α-amylase activity.Similar patterns of distribution along the small intestine were observed for maltase, glucoamylase and oligo-1,6-glucosidase with the highest activities in t he jejunum. There was no overall effect of diet on glucoamylase or maltase specific activities and glucoamylase total activity, although the total activities of maltase and oligo-1,6-glucosidase were significantly greater for the sheep fed the ground maize-based diet (P < 0·05).It is suggested that ruminant animals may be capable of digesting large amounts of starch in the small intestine through an adaptation in the activity of the host carbohydrases.

scholarly journals Benign Osteoblastoma Involving Maxilla: A Case Report and Review of the Literature

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
K. Bokhari ◽  
M. S. Hameed ◽  
M. Ajmal ◽  
Rafi A. Togoo
Keyword(s):  
Case Report ◽  
Surgical Excision ◽  
Good Prognosis ◽  
Histopathological Diagnosis ◽  
Diagnostic Challenge ◽  
Diagnostic Dilemma ◽  
Long Term Follow Up ◽  
Rare Benign Tumor ◽  
Benign Osteoblastoma ◽  
Maxilla And Mandible

Background. Osteoblastoma is a rare benign tumor. This tumor is characterized by osteoid and bone formation with the presence of numerous osteoblasts. The lesion is more frequently seen in long bones and rarely involves maxilla and mandible. Due to its clinical and histological similarity with other bone tumors such as osteoid osteoma and fibro-osseous lesions, osteoblastoma presents a diagnostic dilemma.Case Report. Very few cases of osteoblastomas involving maxillofacial region have been reported in the literature. This case report involves osteoblastoma involving right maxilla in an 18-year-old male patient. Following detailed clinical examination, radiological interpretation, and histopathological diagnosis, surgical excision was performed. The patient was followed up for a period of 3 years and was disease free.Summary and Conclusion. Benign osteoblastoma involving jaw bones is a rare tumor. There is a close resemblance of this tumor with other lesions such as fibro-osseous lesions and odontogenic tumors and thus faces a diagnostic challenge. Surgical excision with a long-term follow-up gives good prognosis to this lesion—Benign Osteoblastoma.

scholarly journals Risk of Late Mortality and Second Malignant Neoplasms among 5-Year Survivors of Young Adult Cancer: A Report of the Childhood, Adolescent, and Young Adult Cancer Survivors Research Program

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Yang Zhang ◽  
Karen Goddard ◽  
John J. Spinelli ◽  
Carolyn Gotay ◽  
Mary L. McBride
Keyword(s):  
Young Adult ◽  
Proportional Hazards Model ◽  
Malignant Neoplasm ◽  
Cox Proportional Hazards Model ◽  
Adolescent And Young Adult ◽  
Malignant Neoplasms ◽  
Risk Of Death ◽  
Young Adult Cancer Survivors ◽  
Adult Cancer Survivors ◽  
Young Adult Cancer

We conducted a population-based retrospective study to assess the long-term risks of overall and cause-specific mortality and second malignant neoplasm (SMN) among survivors of young adult cancer compared to the risk in British Columbia (BC) population and to evaluate the effects of demographic and clinical factors on risk. 1248 5-year survivors of young adult cancer diagnosed 1970–1995 between 20 and 24 years of age were identified from the BC Cancer Registry and followed to the end of 2007. Standardized mortality ratios (SMRs) and standardized incidence ratios (SIRs) were calculated. The Cox proportional hazards model was used to estimate the effects of different demographic and disease-related characteristics on the risk of death and SMN. A total of 138 deaths and 62 SMNs were observed during follow-up. The overall SMR was 5.9 (95% CI 4.9–6.9) and the absolute excess risk was 5.3 per 1,000 person-years. The overall SIR was 3.0 (95% CI 2.3–3.8). Treatment with radiation resulted in increased risks of death and SMN. These observed increased risks emphasize the importance of prevention, surveillance, and treatment of late effects in survivors of young adult cancers.

scholarly journals Tubulocystic renal cell carcinoma: Report of a rare case

2015 ◽  
Vol 9 (9-10) ◽  
pp. 654 ◽  
Author(s):  
Aanchal Kakkar ◽  
Mehar C. Sharma ◽  
Manpreet Uppal ◽  
Sunil Chumber
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Histopathological Examination ◽  
Cystic Neoplasm ◽  
Diagnostic Challenge ◽  
Elderly Male ◽  
Diagnostic Dilemma ◽  
Cystic Neoplasms ◽  
Atypical Cells

Cystic neoplasms of the kidney are rare, and present a unique diagnostic challenge. We report the case of an elderly male who presented with a large cystic neoplasm, which was a diagnostic dilemma clinically and radiologically. Histopathological examination showed a tumour composed of variably sized tubules lined by atypical cells having large round nuclei with prominent nucleoli. Hobnailing was seen at places. Tumour cells were immunopositive for pancytokeratin, vimentin, CD10, CK19 and AMACR, confirming a diagnosis of tubulocystic renal cell carcinoma (TC-RCC).

scholarly journals A Five Years Old Child with Failure To Thrive and Vomiting Presenting as a Diagnostic Dilemma: A Case Report

2020 ◽  
Vol 58 (228) ◽  
Author(s):  
Anita Lamichhane ◽  
Rupesh Sharma ◽  
Ramana Rajkarnikar ◽  
Rubee Awale ◽  
Prapti Shrestha ◽  
...  
Keyword(s):  
Failure To Thrive ◽  
Exploratory Laparotomy ◽  
Age Group ◽  
Older Children ◽  
Diagnostic Challenge ◽  
High Resolution Computed Tomography ◽  
Diagnostic Dilemma ◽  
Recurrent Vomiting ◽  
Colicky Pain ◽  
Band Failure

Vomiting with failure to thrive in older children is a diagnostic challenge due to the diversity in the diagnosis. We report a case of a five-years-old girl with failure to thrive, history of recurrent vomiting and intermittent colicky pain abdomen since 45 days of life. Intestinal malrotation with Ladd’s band was diagnosed based on clinical acumen, high- resolution computed tomography, barium follow through and intraoperative findings. Exploratory laparotomy with Ladd’s procedure was performed under general anesthesia which showed malrotation at the duodenojejunal junction with a short route of mesentery with floating caecum with Ladd’s band. Failure to thrive with malrotation of the gut in the older age group is rare in itself. As there are very few cases reported in this age group, so we undertook to report this case to increase the awareness of knowledge concerning the diagnosis and timely management to prevent the comorbidity of this condition.

scholarly journals Ileocolic intussusception as a presenting sign of primary lymphoma of the colon

2011 ◽  
Vol 139 (9-10) ◽  
pp. 673-676 ◽  
Author(s):  
Milica Nestorovic ◽  
Goran Stanojevic ◽  
Vesna Brzacki ◽  
Vesna Milojkovic ◽  
Branko Brankovic ◽  
...  
Keyword(s):  
Malignant Neoplasm ◽  
Radical Resection ◽  
Right Hemicolectomy ◽  
Primary Lymphoma ◽  
Ileocolic Intussusception ◽  
Diagnostic Challenge ◽  
Abdominal Ultrasonography ◽  
Atypical Symptoms ◽  
Colorectal Lymphoma ◽  
The Right

Introduction. Intussusception is a rare phenomenon in adults. It is caused mainly by malignant neoplasm. Primary lymphoma of the colon is a rare malignancy of the large intestine. The association of intussusception in adult and primary colorectal lymphoma is a diagnostic challenge, since they occur with a variety of atypical symptoms. Case Outline. We report a case of ileocolic intussusception in a 26-year-old man induced by primary lymphoma of the cecum. He was admitted to our hospital for incomplete intestinal obstruction. After thorough diagnostic work-up (plain abdominal radiography, abdominal ultrasonography, multi-slice computerized tomography, colonoscopy with biopsy), the patient underwent surgery. Intraoperative findings confirmed lymphoma as the cause of intussusception. The right hemicolectomy was carried out with end-to-side ileo-transverse anastomosis. Conclusion. Primary colorectal lymphomas should be considered in differential diagnosis of intussusceptions in adults. The treatment of choice is a radical resection where all oncological standards must be fulfilled.

scholarly journals Uterine Epithelioid Trophoblastic Tumor in a 44-Year-Old Woman: A Diagnostic Dilemma

2021 ◽  
Vol 11 (3) ◽  
pp. 631-639
Author(s):  
Maria-Gabriela Aniţei ◽  
Diana-Elena Lazăr ◽  
Raluca Alina Pleşca ◽  
Cristina Terinte ◽  
Radu Iulian ◽  
...  
Keyword(s):  
Reproductive Age ◽  
Diagnostic Challenge ◽  
Diagnostic Dilemma ◽  
Natural Childbirth ◽  
Trophoblastic Tumor ◽  
Epithelioid Trophoblastic Tumor ◽  
Uterine Curettage ◽  
Normal Human ◽  
Poorly Differentiated ◽  
Β Hcg

Background: Epithelioid trophoblastic tumor (ETT) is a rare and newly defined disease, which most commonly occurs in women of reproductive age and can be a sequela of any gestational event. ETT can be present in both intrauterine and extrauterine sites. Case report: A woman of reproductive age, without specific comorbidities and with a single pregnancy and natural childbirth eight years ago, was diagnosed initially with poorly differentiated pleomorphic leiomyosarcoma on the hemostatic uterine curettage. Conclusion: Our case highlights that ETT presents a diagnostic challenge due to its rarity and histologic resemblance to other pathologies. Misdiagnosis delays effective treatment and affects survival. To date, only 8 cases of ETT of the uterus without previous gestational event and normal human chorionic gonadotropin (β-HCG) levels in a 60-year literature survey have been reported.

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