scholarly journals Nasal adenocarcinoma as a suspected secondary malignant neoplasm in a cat previously treated for nasal lymphoma

2020 ◽  
Vol 6 (1) ◽  
pp. 205511692090835
Author(s):  
Gabrielle F Callanan ◽  
Kaitlin M Curran ◽  
Cyril Parachini-Winter ◽  
Shay Bracha ◽  
Sean Spagnoli ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Radiation Treatment ◽  
Present Report ◽  
Clinical Signs ◽  
Malignant Neoplasm ◽  
Facial Swelling ◽  
Nasal Adenocarcinoma ◽  
Nasal Lymphoma ◽  
Secondary Malignant Neoplasm ◽  
Multiagent Chemotherapy

Case summary A case of nasal adenocarcinoma as a suspected secondary malignant neoplasm following definitive radiation therapy and multiagent chemotherapy for nasal lymphoma is described. An 11-year-old spayed female domestic shorthair cat was presented for a 3-week history of progressive facial swelling located over the nasal planum and extending to the medial canthus of the right eye. The cat was previously diagnosed with nasal lymphoma and treated with chemotherapy and definitive radiation 2.5 years prior. Although a definitive diagnosis could not be obtained via cytology, recurrent lymphoma was suspected based on the cat’s history and recurrent clinical signs. A lymphoma-directed chemotherapy protocol was attempted, but no clinical response was achieved. The cat was euthanased owing to progressive clinical signs and a diagnosis of nasal adenocarcinoma was made on necropsy examination. Both the original diagnosis of nasal lymphoma and the secondary diagnosis of nasal adenocarcinoma were confirmed with immunohistochemistry. Relevance and novel information Secondary malignant neoplasm following radiation therapy is infrequently reported in the veterinary literature. In the few reports that exist, most have described sarcoma development in the dog following radiation therapy. In the present report, we describe a cat with a suspected radiation-induced nasal adenocarcinoma that developed 2.5 years after definitive radiation treatment for nasal lymphoma.

First Russian experience of the stereotactic radiotherapy on the prostate bed

2020 ◽  
Vol 10 (2) ◽  
pp. 133-142
Author(s):  
Roman V. Novikov ◽  
Julia S. Melnik ◽  
Olga I. Ponomareva ◽  
Sergey N. Novikov
Keyword(s):  
Prostate Cancer ◽  
Radiation Therapy ◽  
Radiation Treatment ◽  
Medical Center ◽  
Clinical Signs ◽  
Early Period ◽  
Radiation Toxicity ◽  
Postoperative Radiation Therapy ◽  
Dose Hypofractionation ◽  
Prostate Bed

Purpose. Assess the safety of postoperative radiation therapy on the area of the prostate bed (PB) using extreme dose hypofractionation (5 fractions of 6.67 Gr). Materials and methods. from April 2019 to March 2020 at the National Medical Center of Oncology named after N.N. Petrov of the Ministry of Health of the Russian Federation in the first 15 patients of the prostate cancer carried out stereotactic radiation therapy (SRT) on the PB. Depending on the clinical situation, adjuvant and salvage SRT were distinguished. Linear electron accelerators with 6 MeV energy are used for treatment. Three factional regimes were evaluated: 5 factions of 6.6 Gr, 5 factions of 6.8 Gr and 5 factions of 7 Gr. The clinical target volume is defined by RTOG (2010). Results. The median of follow-up was 7.6 (1.3-11.6) months. Of the 15 patients, adjuvant SRT performed three observed, and the remaining 12 patients salvage SRT (4 early, 8 delayed). Acute radiation toxicity was estimated in 12 patients. Early impairment from the lower urinary tract 1 degree was observed in 8 (66.7%) 12 of them. Toxicity of 2 or more degree in the early period was not observed. Clinical signs of early 1st degree toxicity from the rectum were found in five (41.7%) of the bowel of the 12 observed. One patient (8.3%) there was a mixture of blood in the feces, which required a medical correction, which was considered as toxicity of the 2nd degree. Conclusions. Postoperative SRT of the PB region is a promising modern method of radiation treatment of patients with prostate cancer. The presented methods of adjuvant and salvage SRT are feasible in clinical practice and are characterized by an acceptable level of early radiation toxicity.

scholarly journals RADT-29. EFFECT OF RADIATION THERAPY ON OVERALL SURVIVAL FOLLOWING SUBTOTAL RESECTION OF ADULT PILOCYTIC ASTROCYTOMA

2020 ◽  
Vol 22 (Supplement_2) ◽  
pp. ii187-ii188
Author(s):  
Adham Khalafallah ◽  
Adrian Jimenez ◽  
Henry Brem ◽  
Debraj Mukherjee
Keyword(s):  
Overall Survival ◽  
Radiation Therapy ◽  
Pilocytic Astrocytoma ◽  
Radiation Treatment ◽  
Cox Proportional Hazards Model ◽  
Adult Patients ◽  
Subtotal Resection ◽  
Adjuvant Radiation ◽  
Low Grade ◽  
Risk Of Death

Abstract BACKGROUND Pilocytic astrocytoma (PCA) is a low-grade glioma common in children but also rarely diagnosed in adults. The role of adjuvant radiation therapy (RT) in treating these tumors remains unclear. OBJECTIVE We investigated the effect of RT on overall survival, specifically among adult patients who had undergone subtotal PCA resection. METHODS Information on adult patients (age 18 years old) who had undergone subtotal PCA resection between 2004 and 2016 was collected from the National Cancer Database (NCDB). A multivariate Cox proportional hazards model was utilized to determine factors independently associated with overall survival. RESULTS A total of 451 patients were identified. The mean age of our patient cohort was 36.8 years old, and the majority of patients (83.4%) did not receive radiation treatment following subtotal PCA resection. Overall median survival was 93.8 months. Survival was longer (p < 0.001) in the patients who did not receive post-surgical RT (median: 98.3 months) compared to patients who did (median: 54.8 months). Patients who had older age at diagnosis (hazard ratio [HR]=1.05, 95% confidence interval [CI]=1.03-1.07, p < 0.01), were Black or African American (HR=2.76, CI=1.12-6.46, p=0.019), received radiation during their initial treatment (HR=4.53, CI=2.08-9.89, p < 0.01), or had a Charlson/Deyo score of > 1 (HR=3.68, CI=1.55, p=0.003) had a significantly higher risk of death following subtotal PCA resection. CONCLUSION Postoperative RT is independently associated with a significantly higher risk of death among adults who underwent subtotal PCA resection. Our findings provide a rationale for further investigation into the efficacy and safety of RT within this patient population.

Cutaneous Lymphoblastic Lymphoma in Children: Report of Six Cases with Precursor B-cell Lineage

2002 ◽  
Vol 5 (1) ◽  
pp. 45-53 ◽  
Author(s):  
Samir B. Kahwash ◽  
Stephen J. Qualman
Keyword(s):  
Radiation Therapy ◽  
T Cell ◽  
Subcutaneous Tissue ◽  
Bone Marrow Involvement ◽  
Distal Tibia ◽  
Cell Lineage ◽  
Distal Humerus ◽  
Bone Lesions ◽  
Cutaneous Lesions ◽  
Multiagent Chemotherapy

Precursor B lymphoblastic lymphomas (B-LBL) are generally rare, but appear to have a higher incidence in children than in adults. In this report, we describe in detail six cases of B-LBL presenting with cutaneous lesions. Three occurred in the scalp, one in the skin of the thigh, one in the skin of the face and breast, and one in the subcutaneous tissue of the orbit. All six patients are females ranging in age at presentation from 5 to 15 years (mean = 9.6). None of the cases had bone marrow involvement, while two had bone involvement (maxilla, distal tibia, and distal humerus in one case, and distal tibia and orbital bone in another case); only one case had lymphadenopathy (retroperitoneal). Immunohistochemical staining showed positivity for CD79a and CD43 in all six cases. LCA and L26 positivity were also each seen in one case. Staining for MIC-2 (CD99) showed strong positivity in three cases. Vimentin was positive in four cases and TdT was positive in all five patients tested. Staining for keratin, UCHL-1, or CD30 was not encountered. Cases in which cell marker studies by flow cytometry were performed showed positivity for CD10, CD19 with negative CD20, pan-T-cell, and myeloid markers. The five patients who received multiagent chemotherapy are alive with follow-up intervals of 2 to 18 years. Two patients had local recurrences and were given radiation therapy (one with repeating multiagent chemotherapy). One patient (diagnosed in 1962) died of disseminated disease; she had been treated with radiation therapy and 6MP only. Cutaneous B-LBL must be included in the differential diagnosis of small blue cell tumors, especially in children. In contrast to its T-cell counterpart, B-LBL occurs more frequently in females, tends to present as skin or bone lesions, and is associated with a potential cure, even in cases that relapse.

Flap Reconstruction of Sarcoma Defects in the Setting of Neoadjuvant and Adjuvant Radiation

2018 ◽  
Vol 35 (04) ◽  
pp. 287-293 ◽  
Author(s):  
Rohini Kadle ◽  
Catherine Motosko ◽  
George Zakhem ◽  
John Stranix ◽  
Timothy Rapp ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Soft Tissue ◽  
Radiation Treatment ◽  
Soft Tissue Sarcomas ◽  
Adjuvant Radiation ◽  
Complication Rates ◽  
Flap Reconstruction ◽  
Fasciocutaneous Flaps ◽  
Musculoskeletal Tumor Society

Background Limb-sparing treatment of extremity soft tissue sarcomas requires wide resections and radiation therapy. The resulting complex composite defects necessitate reconstructions using either muscle or fasciocutaneous flaps, often in irradiated wound beds. Methods A retrospective chart review was performed of all limb-sparing soft tissue sarcoma resections requiring immediate flap reconstruction from 2012 through 2016. Results Forty-four patients with 51 flaps were identified: 25 fasciocutaneous and 26 muscle-based flaps. Mean defect size, radiation treatment, and follow-up length were similar between groups. More often, muscle-based flaps were performed in younger patients and in the lower extremity. Seventeen flaps were exposed to neoadjuvant radiation, 12 to adjuvant radiation, 5 to both, and 17 to no radiation therapy. Regardless of radiation treatment, complication rates were comparable, with 28% in fasciocutaneous and 31% in muscle-based groups (p < 0.775). Muscle-based flaps performed within 6 weeks of undergoing radiotherapy were less likely to result in complications than those performed after greater than 6 weeks (p < 0.048). At time of follow-up, Musculoskeletal Tumor Society scores for fasciocutaneous and muscle-based reconstructions, with or without radiation, showed no significant differences between groups (mean [SD]: 91% [8%] vs. 89% [13%]). Conclusion The similar complication rates and functional outcomes in this study support the safety and efficacy of both fasciocutaneous flaps and muscle-based flaps in reconstructing limb-sparing sarcoma resection defects, with or without radiotherapy.

scholarly journals Intensive Multimodality Treatment for Children With Newly Diagnosed CNS Atypical Teratoid Rhabdoid Tumor

2009 ◽  
Vol 27 (3) ◽  
pp. 385-389 ◽  
Author(s):  
Susan N. Chi ◽  
Mary Ann Zimmerman ◽  
Xiaopan Yao ◽  
Kenneth J. Cohen ◽  
Peter Burger ◽  
...  
Keyword(s):  
Overall Survival ◽  
Radiation Therapy ◽  
Objective Response Rate ◽  
Response Rate ◽  
Objective Response ◽  
Malignant Neoplasm ◽  
Rhabdoid Tumor ◽  
Atypical Teratoid Rhabdoid Tumor ◽  
Newly Diagnosed ◽  
Atypical Teratoid

Purpose Atypical teratoid rhabdoid tumor (ATRT) of the CNS is a highly malignant neoplasm primarily affecting young children, with a historic median survival ranging from 6 to 11 months. Based on a previous pilot series, a prospective multi-institutional trial was conducted for patients with newly diagnosed CNS ATRT. Patients and Methods Treatment was divided into five phases: preirradiation, chemoradiation, consolidation, maintenance, and continuation therapy. Intrathecal chemotherapy was administered, alternating intralumbar and intraventricular routes. Radiation therapy (RT) was prescribed, either focal (54 Gy) or craniospinal (36 Gy, plus primary boost), depending on age and extent of disease at diagnosis. Results Between 2004 and 2006, 25 patients were enrolled; 20 were eligible for evaluation. Median age at diagnosis was 26 months (range, 2.4 months to 19.5 years). Gross total resection of the primary tumor was achieved in 11 patients. Fourteen patients had M0 disease at diagnosis, one patient had M2 disease, and five patients had M3 disease. Fifteen patients received radiation therapy: 11 focal and four craniospinal. Significant toxicities, in addition to the expected, included radiation recall (n = 2) and transverse myelitis (n = 1). There was one toxic death. Of the 12 patients who were assessable for chemotherapeutic response (pre-RT), the objective response rate was 58%. The objective response rate observed after RT was 38%. The 2-year progression-free and overall survival rates are 53% ± 13% and 70% ± 10%, respectively. Median overall survival has not yet been reached. Conclusion This intensive multimodality regimen has resulted in a significant improvement in time to progression and overall survival for patients with this previously poor-prognosis tumor.

scholarly journals Clinical, pathological and epidemiological aspects of outbreaks of bluetongue disease in sheep in the central region of Rio Grande do Sul

2017 ◽  
Vol 37 (12) ◽  
pp. 1443-1452
Author(s):  
Ronaldo M. Bianchi ◽  
Welden Panziera ◽  
Tatiane C. Faccin ◽  
Gisane L. de Almeida ◽  
Juliana F. Cargnelutti ◽  
...  
Keyword(s):  
Central Region ◽  
Striated Muscle ◽  
Clinical Signs ◽  
Rio Grande ◽  
Nasal Discharge ◽  
Rio Grande Do Sul ◽  
Sample Collection ◽  
Area At Risk ◽  
Tissue Samples ◽  
Facial Swelling

ABSTRACT: This article describes the clinical, pathological and epidemiological aspects of 17 outbreaks of bluetongue (BT) disease in sheep occurring between December 2014 and July 2015 in the central region of Rio Grande do Sul state (RS), southern Brazil. Affected farms were visited for clinical examination, necropsy, sample collection and epidemiological investigation. The outbreaks were seasonal and occurred during the summer and autumn. A total of 180 sheep (20.4%) out of 884 in 17 small herds were affected. All ages of Texel and mixed breed sheep were affected. However, lambs (younger than one year) had higher morbidity than adult sheep. The most frequent clinical signs were anorexia, lethargy, loss of body condition, facial swelling mainly involving the lips, and greenish seromucous or mucous nasal discharge. Pulmonary lesions characterized by edema were the most prevalent findings; however, erosive and ulcerative lesions in the upper gastrointestinal tract, as well as cardiac, skeletal muscle and esophageal striated muscle necrosis, and hemorrhage in the pulmonary artery were also frequent. The bluetongue virus (BTV) genome was detected by RT-PCR in blood and tissue samples (spleen and lungs) of 21 animals from 17 outbreaks. The virus involved in the outbreak 3 was subsequently isolated and shown to belong to serotype 17, for the first time reported in Brazil. In summary, our data support the BTV genotype 17 as the etiological agent of the outbreaks and indicate that the central region of RS is an area at risk for BT in sheep, a disease previously not recognized in the region.

scholarly journals Rare Radiation Complications after Treatment of Cervical Cancer

2020 ◽  
Vol 5 (6) ◽  
pp. 176-181
Author(s):  
О. М. Sukhina ◽  
◽  
K. V. Nemaltsova ◽  
V. S. Sukhin ◽  
◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Radiation Therapy ◽  
Radiation Damage ◽  
Locally Advanced ◽  
Clinical Signs ◽  
Long Term Results ◽  
Great Effort ◽  
Radiation Toxicity ◽  
Advanced Cervical Cancer ◽  
Locally Advanced Cervical Cancer

Currently, cervical cancer is one of the most common types of oncological pathology. Radiation therapy is the main treatment for patients with locally advanced cervical cancer. The main goal of radiation treatment for cervical cancer is to plan the amount of radiation in which the primary tumor and the areas of regional lymph outflow are subject to the maximum possible impact with minimal radiation exposure to critical organs (rectum and bladder). However, the program of combined radiation therapy according to a radical program in patients with locally advanced cervical cancer provides for irradiation of sufficiently large volumes with high therapeutic doses. Radiation therapy with radiomodifying cytostatics or with competitive polychemotherapy improves both immediate and long-term results of treatment, but increases the risk of radiation reactions. According to clinical signs, radiation toxicity is divided into general and local, which, in turn, can be early and late, depending on the time of occurrence. The risk of radiation damage naturally increases with an increase in the total absorbed dose. The presence of comorbidities also affects the likelihood of post-radiation complications. Chronic diseases of organs located in the irradiated zone significantly increase the risk of their radiation damage. Individual radiosensitivity plays a decisive role in the occurrence of radiation complications. The article describes a case of a urinary-small intestinal fistula in patient A., 80 years old. The patient has been observed in the clinic of the State Organization «Grigoriev Institute for Medical Radiology and Oncology National Academy of Medical Sciences of Ukraine» since 2016 for cervical cancer FIGO IVA stage (pathohistological conclusion was squamous cell non-keratinizing cancer), a course of combined radiation therapy with modification of 5-fluorouracil under a radical program was carried out. The relapse-free period for cervical cancer was 4 years, the patient regularly underwent control examinations at the Institute's clinic. Since March 2020 has had complaints about the presence of feces in the urine, which is why she came to the clinic. Conclusion. Treatment of this category of patients is a difficult task that requires time and great effort from both medical staff and patients

scholarly journals Factors increasing the risk of flap complications following pectoralis major myocutaneous flap reconstruction for head and neck cancers

2020 ◽  
Vol 6 (6) ◽  
pp. 1138
Author(s):  
Subbiah Shanmugam ◽  
Syed Afroze Hussain ◽  
Rajiv Michael
Keyword(s):  
Radiation Therapy ◽  
Head And Neck ◽  
Radiation Treatment ◽  
Demographic Data ◽  
Major Complication ◽  
Pectoralis Major ◽  
Head And Neck Reconstruction ◽  
Complication Rates ◽  
Flap Reconstruction ◽  
Operative Care

<p class="abstract"><strong>Background:</strong> Oral cavity cancer is one of the most common cancers and a leading cause of cancer death in India. Pectoralis major myocutaneous flaps (PMMC) are still widely used for reconstruction of defects in the head and neck, though microvascular free flaps are the ‘gold standard’. This study was aimed to identify the risk factors involved in increasing the post-operative PMMC flap complications.</p><p class="abstract"><strong>Methods:</strong> Patients who underwent surgical resection of primary head and neck cancer with PMMC flap reconstruction were included and their demographic data, pre-operative laboratory values, surgery details and post-operative flap morbidity were collected retrospectively from the master case sheets from January 2013 to December 2019. Factors such as age, gender, stage of disease, pre-operative anemia, hypoprotenemia and radiation therapy, presence of diabetes and size of the flaps were analysed to find their relation in causing flap complications.  </p><p class="abstract"><strong>Results:</strong> Totally 285 patients were included for analysis and 9.82% (n=28) had major flap complications. On analysis we found that pre-operative hypoproteinemia (serum albumin &lt;3.5) (p=0.001) and prior radiation therapy (p=0.02) significantly increased the risk of flap complications. Similarly, patients with larger bipaddled flaps had higher flap complication rates (p=0.0002) and previous radiation treatment further increased the major complication rates in bipaddle flaps.</p><p class="abstract"><strong>Conclusions:</strong> PMMC flaps are still a viable option for head and neck reconstruction especially in patients with multiple comorbidities and where free microvascular flaps are not done routinely. Careful patient selection, pre-operative optimisation and good post-operative care will help to reduce flap complications.</p><p> </p>

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