Tumor

Subungual exostosis: Pediatric aspects

Published on: 26th July, 2019

OCLC Number/Unique Identifier: 8206575139

Subungual exostosis (SUE) is a benign phalangeal tumor of an osteocartilaginous nature [1]. SUE is most commonly diagnosed in children and young adults; most of these lesions are located in the big toe, although they can occur (albeit infrequently) in other toes. We report five observations of SUE described in young children under 10 years and discuss the particularities of this pathology in the pediatric population.
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Recent advances in pathophysiology and management of subglottic Hemangioma

Published on: 4th May, 2018

OCLC Number/Unique Identifier: 7814923433

Subglottic hemangioma is the most common vascular tumor of the larynx of pediatrics; in contrast, it is relatively uncommon, accounting for an estimated 1.5% of congenital laryngeal anomalies [1].
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Giant Lipoma Anterior Neck: A case report

Published on: 14th December, 2017

OCLC Number/Unique Identifier: 8465495935

Lipoma is a benign mesenchymal tumor with a thirteen percent incidence in head and neck region. Posterior triangle is the most common location while anterior neck lipoma is a rare one. Giant lipomas >10cm have been reported in different parts of the body but rarely in the anterior neck. Giant lipomas of the neck can present as a cosmetic disfigurement or can produce pressure symptoms. Most lipomas do not pose any difficulty in diagnosis. Surgical excision remains the treatment of choice. We here present a case of giant anterior neck lipoma.
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Brooke-Spiegler Syndrome: A rare cause of skin appendageal tumor

Published on: 1st November, 2018

OCLC Number/Unique Identifier: 7912402820

A 51-year-old women presented with asymptomatic multiple polypoidal nodules over scalp with simultaneous papularnodular skin eruptions involving nose, nasolabial folds and forehead for 40 years duration. Her daughter also noted to be having multiple papularnodular skin eruptions involving nose, nasolabial folds and forehead which raised curiosity of possible familial condition. The punch biopsy of polypoidal nodule indicating histological evidence of spiradenoma was favour in diagnosis of Brook Spienger Syndrome. We report this case as this is a rare clinical entity.
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Biologic therapy-Related demyelinating peripheral neuropathy in a child with Juvenile Idiopathic Arthritis

Published on: 19th July, 2018

OCLC Number/Unique Identifier: 7814985434

Demyelinating peripheral neuropathy has been described in association with tumor necrosis factor (TNF) inhibitors. It is rarely developed after treatment discontinuation. We present the case of a child with juvenile idiopathic arthritis who developed peripheral neuropathy few months after TNF inhibitor withdrawal with clinical worsening of the neurological sequelae while undergoing treatment with abatacept.
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The role of robotic segmentectomy for non-small cell lung cancer

Published on: 6th October, 2020

OCLC Number/Unique Identifier: 8682303248

Segmentectomy may be applied to all segments; superior segmentectomies (lower lobe superior segments for both lungs), lingulectomies (two segments forming lingulas of upper left lobe) and basal segmentectomies (segments other than superior segment for both lungs). In lung segment resections; segmentectomy has an equivalent morbidity, recurrence and survival rate compared to lobectomy, in patients with stage I lung cancer, tumors smaller than 2 cm and within the segmental anatomical limits. Segmentectomy also contributes more to preserving lung function and exercise capacity than lobectomy. In tumor resection; especially in patients with advanced age, insufficient performance or insufficient cardiopulmonary reserve, 2 cm in diameter and acceptable segmental margins may be provided. Limited long-term results show oncological results of robotic approach similar to open and VATS approaches. Robotic approach facilitates surgery with more intuitive movements, greater flexibility and high definition, three-dimensional vision. However, high cost and lack of touch sense are main disadvantages of robotic surgery. New studies are needed to assess quality of life, morbidity, oncological results and cost effectiveness. However, considering development of technology in our age and fact that many surgical robot brands will be released in the near future, it is predicted that disadvantages of robotic surgery will be minimized in the near future. This article reviews experience of segmentectomy in non-small cell lung cancer and discusses benefits and limitations of robotic segmentectomy.
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Local recurrence after enlarged total nephrectomy

Published on: 5th April, 2019

OCLC Number/Unique Identifier: 8056337130

Local isolated recurrence of kidney cancer in the renal lodge after radical nephrectomy is rare and has a poor prognosis. Surgical excision, sometimes even extended to neighboring organs, is currently the only effective treatment for local recurrence of kidney cancer. The interest of new medical therapies remains to be defined. We report a case of local recurrence in a patient with radical nephrectomy.
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Soliter fibrous tumor of diaphragm in a patient with larynx cancer: Case report

Published on: 13th January, 2021

OCLC Number/Unique Identifier: 8899350266

Introduction: Solitary fibrous tumor is a neoplasm of mesenchymal origin with benign and malignant forms. We aimed to present a case of solitary fibrous tumor which developed in a patient operated for laryngeal cancer and originated from diaphragm in the light of the literature. Case report: A 61-year-old male patient with tracheostomy with an undiagnosed lesion that appears to be almost 10 cm was referred to our clinic. Since it was a large volume mass, we chose to perform a thoracotomy over thorachoscopic approach. Discussion: Although solitary fibrous tumors most commonly occur in the pleura but may also originated from diaphragm, and our case is valuable that originates from diaphragmatic since there are less than 5 reported cases in literature for past two decades. Conclusion: Even in the case of recurrence, the main treatment remains as total surgical excision. Solitary fibrous tumors are usually detected because of compression symptoms. That is the main reason why we chose thoracotomy.
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Giant prolactinoma case with side effects due to cabergoline

Published on: 16th March, 2020

OCLC Number/Unique Identifier: 8559315208

Dopamine agonists should usually be the first treatment for patients with prolactinomas of all sizes, because these drugs decrease serum prolactin concentrations and decrease the size of most lactotroph adenomas. Cabergoline is preferred first. When cabergoline develops side effects bromokriptin is switched. Cabergoline is more efficient than bromocriptine. Its side effect profile more favorable than bromocriptine. Cabergoline is an ergot dopamine agonist that is administered once or twice a week. Cabergoline can have rarely serious psychiatric adverse effects, including psychosis, impulse control disorders, dyskinesia, pulmonery fibrosis and valvular heart disease. Prolactinomas are the most common pituitary tumors, 93%-95% of the cases are microadenomas. Macroprolactinomas larger than 40 mm, known as giant prolactinomas, are exceptionally rare, accounting for 0.5% - 4% of all prolactin-hypersecreting adenomas. In our case, after the 7 x 6 cm giant macroprolactinoma operated we report the manic episode occuring during the second week of cabergoline treatment. In the treatment of patients with prolactinoma, cabergoline is a first choice drug because it has a better tolerance profile and is more effective, however, bromocriptine can be switched to when drug resistance or side effects develop to cabergoline.
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Epiphora as a sign of unexpected underlying squamous cell carcinoma within sinonasal inverted papilloma

Published on: 15th June, 2020

OCLC Number/Unique Identifier: 8628632437

Sinonasal inverted papilloma (SIP) is a benign tumor which originates from the sinonasal Schneiderian mucosa and accounts for 0.5% to 4% of all nasal and sinus neoplasm [1]. Pathologically, SIP epithelium inverts into submucosal stroma, which is different from other types of nasal papilloma. Unlike other benign tumors, SIP exhibits remarkable aggressive behaviors, including invasiveness, recurrence and malignant transformation [2]. Therefore, SIP can spread into the paranasal sinus, orbit, and cranial base, which can lead to poor prognosis for SIP patients [2]. Secondary squamous cell carcinoma is malignancy formation within the SIP. It is considered primary if there is no additional mucosal condition or secondary if it occurs in conjunction with an additional condition, which is estimated to occur in about 9% of cases [3]. The authors report the case of a 66-year-old woman with SIP and secondary SCC of the right nasal cavity. This study was adherent with the tenets of the Declaration of Helsinki.
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Ependymomas with extraneural metastasis to lung in children: A case report and literature review

Published on: 16th June, 2020

OCLC Number/Unique Identifier: 8628662175

Ependymomas, which account for 10% of pediatric central nervous system (CNS) tumors, arise from the ependymal cells that line the cerebral ventricles and the central canal of the spinal cord. Extraneural metastasis to lung is rare for ependymomas primary tumors. Repeated surgeries that disrupt the blood-brain barrier may contribute to haematogenous spread, but the mechanism remains unclear. We present a case of ependymoma with extraneural metastasis to lung in a child and discuss reported cases of extracranial metastatic ependymoma with this presentation.
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PET/MRI, aiming to improve the target for Fractionated Stereotactic Radiotherapy (FSRT) in recurrence of resected skull base meningioma after 2 years: Case report

Published on: 12th January, 2021

OCLC Number/Unique Identifier: 8899343514

The increasing use of highly conformal radiation deliberates a higher accurate targeting. Contouring and clinical judgment are presumably the crucial point, thus positron emission tomography/magnetic resonance imaging PET/MRI with somatostatin analogs appears to be useful in radiotherapy target definition. A case report of a 43-year-old woman presented with a recurrence of a meningioma (World Health Organization group I classification) in skull base, 2 years after resection. Magnetic resonance imaging (MRI) revealed a left sided skull base mass on sphenoid wing, anterior clinoid and with a soft tissue component in the lateral portion of the orbit. Contrast-enhanced MRI and a computed tomography (CT) dedicated were used to the radiotherapy planning. Aiming an improvement on target volume delineation, 68Ga-DOTATOC-PET/MRI was also performed due the difficult localization of the tumor in skull base. Was treated using intensity-modulated radiotherapy (IMRT) to a total dose of 54 Gy in 28 fractions. It was prescribed to the planning target volume (PTV), defined based of both imaging modalities. In our case PET/MRI helped to define the target, which volume becomes bigger than that based exclusively on MRI and CT.
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Oncocytic papillary cystadenoma of right laryngeal ventricle

Published on: 30th April, 2021

OCLC Number/Unique Identifier: 9029519756

A case of oncocytic papillary cystadenoma in a 72-year old woman, a rare tumor of laryngeal seromucinous glands of unclear nature is presented. The patient had a history of chronic inflammation of laryngeal mucosa and both her age and tumor location were typical. The lesion was resected transorally without complications. Histological findings are shown in the present study. The controversial status of oncocytic papillary cystadenoma as either a true neoplasm or a combination of metaplastic and hyperplastic changes, its resemblance to Warthin’s tumor and optimal approach to treatment are discussed.
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Preclinical studies for a cationic liposome formulation containing Il-2 Intended for the treatment of Human Tumors

Published on: 29th October, 2018

OCLC Number/Unique Identifier: 7929276894

Human cervical cancer tumours expressing the IL-2 receptor (IL-2R) were induced in the peritoneal cavity of nude mice. The tumours were significantly reduced by the i.p. administration of either free IL-2 or liposomes containing this growth factor. No toxicity was observed in the mice even at the highest doses of IL-2 in liposomes. We did not detect any IL-2 in the blood plasma pointing to a strong retention of the liposomes on the cavity. We concluded that this preclinical study for the treatment of tumours expressing IL-2R in the peritoneal cavity is effective and safe. The liposomes were stable and their IL-2 active for up to one year when kept at -14oC in a cryopreservation media approved by the FDA for human use.
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Factors associated with diagnostic delay in children with Wilms’ tumor

Published on: 15th April, 2021

OCLC Number/Unique Identifier: 9006870366

Background: In Wilms’ tumor, the time elapsed between clinical diagnosis and the start of treatment is clearly associated with morbidity and mortality. As treatment delay can influence patient survival, identification of possible causes can mitigate the consequences arising from prolonged diagnostic uncertainty. Objective: To ascertain whether an initial diagnosis of Wilms’ tumor in the emergency department influences patient prognosis depending on the type of referral for definitive treatment. Patients and methods: Retrospective chart review of 98 children receiving treatment for Wilms’ tumor at the Brazilian National Cancer Institute (INCA) between April 2003 and December 2016. Patients were categorized into two groups: those referred directly from an emergency public department to INCA and those first transferred to another hospital before being referred to INCA. Results: Of the 98 cases included in the study, 42.9% were direct referrals and 57.1% were indirect referrals. Presence of an abdominal mass was the most common presenting complaint, followed by abdominal pain. In cases with larger tumors, the mean tumor volume was greater than reported elsewhere in the literature, suggesting longer disease duration. Significantly higher tumor volumes were observed in patients with a palpable abdominal mass as compared to those with the second most frequent complaint (abdominal pain). Conclusion: The findings of this study support the hypothesis that patients diagnosed with kidney masses in the emergency department are at greater risk of delayed diagnosis when they are referred first to a non-specialized outside hospital than when referred directly to a specialized cancer treatment unit.
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Rapidly involuting congenital hemangioma associated with Kasabach-Merritt Syndrome

Published on: 17th May, 2021

OCLC Number/Unique Identifier: 9272395700

Background: Rapidly involuting congenital hemangioma (RICH) is a rare vascular tumor that is present at birth and involutes during the first year of life. Kasabach-Merritt syndrome (KMS) is a complication of some vascular tumors such as kaposiform hemangioendothelioma and tufted angioma associated with thrombocytopenia and coagulopathy. Results: The case of a 2-month-old infant with a diagnosis of RICH with thrombocytopenia and coagulation disorder, successfully treated with surgical excision without complications or recurrence is presented. Conclusion: The association between RICH and KMS is rare. Histopathological study, immunohistochemistry and ultrasound findings are important for the diagnosis. Brief summary: This report covers the rare association between rapidly involuting congenital hemangioma and Kasabach-Merritt syndrome in a 2-months-old female infant.
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COVID-19 immunologic and toxicological implication: Innate immune sensor and immune escape

Published on: 25th March, 2021

OCLC Number/Unique Identifier: 8980360578

Related COVID-19 and new Variant and treatment like vaccine it is relevant to deeply verify the immunologic implication and in a special way regarding the innate immune sensor system and the evasion of the immune system. This can be crucial to search for new strategies to fight this severe disease under a Toxicology-antidotes point of view. The rapid emergence of a new variant is under study by researchers because some of these show different responses to antibodies as reported in literature (vaccine efficacy?). In this article after a review part it is submitted a collection of hypothesis of solution to contrast COVID-19. Spread and mortality and project hypothesis. A new toxicological approach also in a viral respiratory disease can be a novelty to adequately fight this severe condition and this focusing not only towards specific immunity but also a specific measures. A toxicological approach in drug- vaccine like products designing makes it possible to get the clinical outcomes needed.
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A Pancreatic Neuroendocrine Tumor with an Unusual Flush

Published on: 14th August, 2018

OCLC Number/Unique Identifier: 7844643436

A 60-year-old man presented with an unusual history of lower limb flushing. A CT scan suggested a pancreatic neuroendocrine tumor. After a robotic distal pancreatectomy, his symptoms completely resolved. The tumor was positive for synaptophysin and chromogranin. This case emphasizes the importance of recognizing atypical features in patients, especially with an unusual skin presentation that might indicate rare tumor types.
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Brachial Plexus Schwannoma: Report of 4 cases with Intralesional Enucleation

Published on: 28th December, 2017

OCLC Number/Unique Identifier: 7869137380

Brachial plexus tumours are rare. It comprises of only 5% of all tumours of upper limb [1]. The two most common brachial plexus region tumors are schwannomas and neurofibromas [2-4]. Both are benign and arise from the nerve sheath. XiaotianJia et al., published a large case series of 143 patients with primary brachial plexus tumors in 2016. In his series, there are 119 schwannoma and 12 neurofibromas [3]. Schwannomas are most frequently found in the head and neck region, which comprises 25% of all Schwannomas. There are only about 5% of schwannomas present as brachial plexus tumours [5].
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Cranioplasty with preoperatively customized Polymethyl-methacrylate by using 3-Dimensional Printed Polyethylene Terephthalate Glycol Mold

Published on: 30th November, 2018

OCLC Number/Unique Identifier: 7935923400

Cranioplasty is a reconstructive procedure for the repair of skull defects or deformities. Polymethyl-methacrylate (PMMA) is a commonly used alloplastic material when autologous bone is unavailable. However, manual shaping of bone cement for frontal and orbital bone defects is challenging and may not lead to cosmetically satisfactory results. Advances in computer-aided 3-dimensional (3D) design and printing technology allow the production of patient-customized implants with improved cosmetic and functional results. A 39-year-old female patient presented with right-sided frontal swelling and headache. Computerized tomography (CT) demonstrated a right frontal calvarial mass extending to the orbital wall. The boundaries of the lesion were marked using a 3D design software. A polyethylene terephthalate glycol (PETG) mold was manufactured with help of a 3D printer. Artificial bone flap was formed by pouring PMMA into the mold. After surgical resection of the calvarial mass, customized PMMA implant was applied with titanium mini plate and screws. The defect was closed properly with good aesthetic results. Production of customized PMMA cranioplasty implants with 3D printed molds is a useful technique and can be preferred for calvarial defects due to skull tumors, bone resorption and traumatic bone loss.
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