Local imaging to interpret tumor size in F18 fluorodeoxyglucose positron emission tomography/CT in lung cancers.

OBJECTIVE: This study aimed to determine the thoracic and extra-thoracic extension of the disease in patients diagnosed with lung cancer and who had whole-body F18-fluorodeoxyglucose positron emission tomography/CT imaging and to investigate whether there is a relationship between tumor size and extrathoracic spread. METHODS: A total of 308 patients diagnosed with lung cancer were included in this study. These 308 patients were first classified as group 1 (SPN 30 mm>longest lesion diameter ≥10 mm) and group 2 (lung mass (longest lesion diameter ≥30 mm), and then the same patients were classified as group 3 (nodular diameter of ≤20 mm) and group 4 (nodular size of >20 mm). Group 1 was compared with group 2 in terms of extrathoracic metastases. Similarly, group 3 was compared with group 4 in terms of frequency of extrathoracic metastases. F18 fluorodeoxyglucose positron emission tomography/CT examination was used to detect liver, adrenal, bone, and supraclavicular lymph node metastasis, besides extrathoracic metastasis. RESULTS: Liver, bone, and extrathoracic metastasis in group 1 was statistically lower than in group 2 (p<0.001, p<0.01, and p=0.03, respectively). Liver, extrathoracic, adrenal, and bone metastasis in group 3 was statistically lower than that in group 4 (p<0.001, p=0.01, and p=0.04, p<0.01, respectively). The extrathoracic extension was observed in only one patient in group 3. In addition, liver, adrenal, and bone metastases were not observed in group 3 patients. CONCLUSION: Positron emission tomography/CT may be more appropriate for cases with a nodule diameter of ≤20 mm. Performing local imaging in patients with a nodule diameter of ≤20 mm could reduce radiation exposure and save radiopharmaceuticals used in positron emission tomography/CT imaging.

Anti-inflammatory and anti-oxidant role of ursolic acid in cerulein-induced acute pancreatitis in rats.

BACKGROUND: Ursolic acid (UA) is found in many plants, and has been reported to have anti-protease, antioxidant, anti-inflammatory, antimicrobial, nephroprotective, hepatoprotective, and cardioprotective effects. OBJECTIVE: The purpose of this study was to investigate the effects of ursolic acid in cerulein-induced acute pancreatitis (AP). MATERIALS AND METHODS: Thirty-two Wistar albino rats were randomly assigned to 4 equal groups: Sham, acute pancreatitis, treatment, and ursolic acid group. RESULTS: Serum amylase levels in the AP and treatment groups were significantly higher than in the others (p < 0.05). In addition, serum IL-1ß, IL-6, and TNF-α levels were significantly higher in the AP group in comparison with the treatment group. Although pancreatic tissue total oxidant activity in the AP and treatment groups was similar, pancreatic tissue total antioxidant capacity was significantly higher in the treatment group than in the AP group. CONCLUSIONS: Damage to the pancreas and remote organs in AP was observed to be reduced by UA. In addition, oxidative stress was observed to be decreased by the effect of UA.

ANTECEDENTES: El ácido ursólico se encuentra en numerosas plantas y se ha informado que tiene efectos antiproteasas, antioxidantes, antiinflamatorios, antimicrobianos, nefroprotectores, hepatoprotectores y cardioprotectores. OBJETIVO: Este estudio tuvo como objetivo investigar los efectos del ácido ursólico en la pancreatitis aguda inducida por ceruleína. MATERIAL Y MÉTODOS: Treinta y dos ratas albinas Wistar fueron asignadas aleatoriamente a cuatro grupos iguales: grupo simulado, grupo de pancreatitis aguda, grupo de tratamiento y grupo de ácido ursólico. RESULTADOS: Los niveles de amilasa sérica en los grupos de pancreatitis aguda y de tratamiento fueron significativamente más altos que en los otros grupos (p < 0.05). Además, los niveles séricos de IL-1ß, IL-6 y TNF-α fueron significativamente más altos en el grupo de pancreatitis aguda en comparación con el grupo de tratamiento. Aunque la actividad oxidante total del tejido pancreático en ambos grupos fue similar, la capacidad antioxidante total del tejido pancreático en el grupo de tratamiento fue significativamente mayor. CONCLUSIÓN: Se observó que el ácido ursólico reduce el daño al páncreas y órganos remotos en la pancreatitis aguda, al igual que el estrés oxidativo.

Superiority of 18 F-FDG PET/CT to 68 GA-FAPI PET/CT in Adrenocortical Tumor Imaging.

ABSTRACT: 18 F-FDG PET/CT was performed to evaluate the response to treatment in a 62-year-old female patient who was operated for adrenocortical carcinoma. High FDG uptake was observed in recurrent lesion in the left adrenal gland site and metastatic lesions. In the 68 Ga-FAPI-04 PET/CT study, low FAPI uptake was observed in both recurrences and metastases. In this case, we demonstrated the superiority of 18 F-FDG PET/CT over 68 Ga-FAPI-04 PET/CT in the evaluation of adrenocortical carcinoma.

Investigation of ZIP4, ZO-1, and CLAUDIN-1 expression in thyroid tumours by immunohistochemistry and real-time polymerase chain reaction methods.

Thyroid neoplasms are the most common endocrine malignancies. ZIP4 is an intramembranous zinc trans membrane protein. Zinc plays a central role in the activation of transcription factors, and zinc transporters. This affects tumour migration, invasion, and cell proliferation. ZO-1 and Claudin-1 are important tight junction proteins whose amounts increase and decrease in various cancers. In this study, we aimed to investigate the expression of ZIP4, ZO-1, and Claudin-1 in thyroid tumours and the relationship of this expression with tumour types and prognostic parameters. ZIP4, ZO-1, and Claudin-1 were studied in all cases by immunohistochemical and Real-Time PCR methods. ZIP4 and Claudin-1 tended to be expressed more in cases with tumours, while ZO-1 in cases with and without tumours. Expression of ZIP4 and Claudin-1 by real-time polymerase chain reaction showed a significant difference between histological subtypes, and this difference was not observed with ZO-1. It was observed that the presence of metastasis increased with the expression of ZIP4 and Claudin-1, and there was no significant change with ZO-1. We think that Claudin-1 and ZIP4 expression can be used as an important marker in terms of showing poor prognosis and susceptibility to metastasis in thyroid tumours, and in developing targeted therapy.

Pleural mesothelioma metastasis of the scalp.

Mesothelioma is a locally aggressive malignant tumor that arises on the mesothelial surfaces of the pleura, peritoneum and tunica vaginalis. There are three histologic subtypes of mesothelioma: epithelioid, biphasic, and sarcomatoid. Pleural mesothelioma is usually characterized by diffuse pleural thickening. Disease progression is characterized by local invasion of the chest wall and lung. Lymphatic metastasis is rare and hematogenous metastasis is much rarer. The purpose of these case reports is to emphasize that pleural mesothelioma metastases can occur in unexpected places and to contribute to the literature.

The effect of low-dose Cordyceps on ischemia-reperfusion injury of the kidney in rats.

OBJECTIVE: None of studies have been conducted in terms of demonstrating the same effect with the low dose in cordycepin. In our study, we analyzed the histopathological and biochemical changes of low-dose Cordycepin(c) on a rat model in the kidney. MATERIALS AND METHODS: Twenty-four male Wistar Albino rats were randomly allocated to three groups (n = 8): the sham-control group (Group 1), the renal I/R-untreated (Group 2) group, and the I/R-C-treated (Group 3) group. Cordyceps was administered intraperitoneally at 5 mg/kg twice. Renal histological changes were compared and the relevant parameters of oxidative stress and inflammation were detected. RESULTS: In blood and tissue biochemistry, it was observed that IL-1 Beta, IL 6, TNF alpha, MDA, TOS, and OSI increased in Group 2 and decreased in Group 3. It was determined that TAS values were increased in Group 3, and decreased in Group 2. In the histopathological evaluation, while Group 1 was evaluated as normal, significant kidney damage was detected in Group 2. It was determined that there was a significant decrease in kidney damage in Group 3. CONCLUSION: These results suggest that low dose Cordycepin was as effective as normal dose on renal ischemic reperfusion and reduction of damage.

OBJETIVO: Ninguno de los estudios se ha realizado en términos de demostrar el mismo efecto con la dosis baja de cordicepina. En nuestro estudio, analizamos los cambios histopatológicos y bioquímicos de Cordycepin(c) en dosis bajas en un modelo de rata con isquemia-reperfusión (I/R) inducida en el riñón. MATERIALES Y MÉTODOS: Veinticuatro ratas macho Wistar Albino se asignaron al azar a tres grupos (n = 8): el grupo de control simulado (Grupo 1), el grupo sin tratamiento I/R renal (Grupo 2) y el grupo tratado con I/R-C (Grupo 3). Cordyceps se administró por vía intraperitoneal a 5 mg/kg dos veces. Se compararon los cambios histológicos renales y se detectaron los parámetros relevantes de estrés oxidativo e inflamación. RESULTADOS: En bioquímica sanguínea y tisular se observó que IL-1 Beta, IL 6, TNF alfa, MDA, TOS y OSI aumentaron en el Grupo 2 y disminuyeron en el Grupo 3. Se determinó que los valores de TAS aumentaron en el Grupo 3, y disminuyó en el Grupo 2. En la evaluación histopatológica, mientras que el Grupo 1 fue evaluado como normal, se detectó daño renal significativo en el Grupo 2. Se determinó que hubo una disminución significativa del daño renal en el grupo 3. CONCLUSIÓN: Estos resultados sugieren que la cordicepina en dosis bajas fue tan efectiva como la dosis normal en la reperfusión isquémica renal y la reducción del daño.

Comparison of ependymomas and medulloblastomas located in the posterior cranial fossa: An anatomical and histopathological study.

Posterior fossa tumors (PFTs) include medulloblastomas, atypical teratoid/rhabdoid tumors, pilocytic astrocytomas, ependymomas, and brainstem gliomas. We evaluated patients with surgery at our clinic, comparing epidemiological, clinical, radiological, and pathological characteristics of medulloblastoma and ependymoma to identify factors that might assist preoperative diagnosis, help to develop treatment algorithms, and have prognostic value after surgery. Pediatric patients from 0 to 16 and young adults from 16 to 29 years of age with surgery for pathologically confirmed ependymomas or medulloblastomas between January 2014 and January 2020 were eligible. The study included 19 patients, seven with ependymoma (37%) and 12 with medulloblastoma (63.2%). The ependymoma patients were 5.29 ± 5.85 years of age, the medulloblastoma patients were 11.58 ± 8.17 years of age, and 16 patients (84%) were children.Fifteen patients (79%) presented with signs of increased intracranial pressure and four (21%) presented with cerebellar findings. MRI found that 74% (14) of the PSTs were located in the midline, including six of the seven ependymomas (86%) and eight of the 12 medulloblastomas (67%). Enhancement was significantly greater in medulloblastomas compared with ependymomas (p = 0.022). In according to pathology results; synaptophysin, NSE, chromogranin and 50% GFAP positivity were observed in medulloblastoma. Ependymomas were S100 (43%) and vimentin (29%) positive. Ependymoma patients were younger than medulloblastoma patients and more were female. There were no significant differences in the clinical findings, but ependymomas were larger and had greater rates of enhancement and spinal metastasis compared with medulloblastomas.

Bullous Pemphigoid Induced by Metamizole in a Pediatric Patient.

Bullous pemphigoid (BP) is an autoimmune bullous disease commonly seen in adult population but rarely encountered in the pediatric population. Although the exact etiology of BP remains unclear, various vaccines, infectious agents, and drug use have been blamed in the etiology of BP. Here, we present a 14-year-old patient who developed BP after using metamizole and whose diagnosis was clinically and histopathologically confirmed.

Colchicine may be of therapeutic benefit in prurigo pigmentosa.

Prurigo pigmentosa (PP) is a rare inflammatory skin disease. Neutrophil-mediated inflammation is considered to be responsible for the etiopathogenesis of PP. We consider that colchicine may be an effective agent in the treatment of PP since it exerts an antiinflammatory effect by inhibiting neutrophil chemotaxis. Further studies are required to verify whether colchicine is an effective treatment option for PP.

Asymptomatic flesh-colored lobular nodule on the nose.

Chondroid syringoma is a rare benign tumor of the skin appendages. Chondroid syringoma is mostly manifested by a slow-growing, painless, well defined subcutaneous or intradermal nodule. A 43-year-old man presented to our clinic with the complaint of an asymptomatic nodule on the dorsum of the nose for 8 months. The lesion was totally excised. Histopathological examination was notable for epithelial islets embedded in the chondroid matrix in the dermis. The patient was diagnosed with chondroid syringoma in light of the clinical and histopathological findings.

Protective Effect of Cordycepin on Experimental Testicular Ischemia/Reperfusion Injury in Rats.

OBJECTIVE: To investigate the role of cordycepin in testicular ischemia/reperfusion injury in rats. MATERIALS AND METHODS: Forty Wistar albino rats were randomly divided into four groups, as follows: group one, control (C); group two, torsion and ischemia (I); group three: detorsion with ischemia-reperfusion (IR); and group four, detorsion/cordycepin. The rats were then analyzed macromorphologically and histopathologically, and blood tests were performed. Specifically, the total oxidant status (TOS) and total antioxidant status (TAS) were determined, and malondialdehyde (MDA), tumor necrosis factor (TNF)-α, interleukin (IL)-6, and IL-1ß levels were analyzed. In addition, pyknotic nuclei, spermatozoa, edema, and hemorrhage were assessed. RESULTS: When the IR and cordycepin groups were compared with the other groups, there was a statistically significant decrease in TNF-α and MDA levels (p < 0.05). Increased TAS levels were observed in the cordycepin group compared with the control group. TOS levels were significantly increased in the I and IR groups, but decreased in the cordycepin group (p < 0.05). Similar effects were observed in tissue biochemistry analysis. Histopathological evaluations revealed that the spermatozoa count was decreased in the I and IR groups. However, there was an increase in the cordycepin group, as well as a statistically significant difference between the IR and cordycepin groups (p < 0.01). Finally, edema and inflammation were increased in the I and IR groups, but decreased in the cordycepin group. CONCLUSIONS: Histological and biochemical findings revealed that cordycepin protected against IR-induced testicular injury.

Bullous Hemorrhagic Dermatosis Induced by Enoxaparin.

Bullous hemorrhagic dermatosis induced by enoxaparin is a rare, self-limiting, cutaneous adverse reaction causing no complications. In this report, we present a case where bullous hemorrhagic dermatosis developed at a location distant from the site of injection after using enoxaparin for 5 days for pulmonary venous thrombosis.

Cordycepin prevents postoperative formation of intra-abdominal adhesion in a rat model: An experimental study.

BACKGROUND: The aim of the present study was to investigate whether cordycepin prevented adhesion formation in a rat model. METHODS: Rats were randomly assigned to 3 groups of 10 rats. CONTROL GROUP: The absence of adhesion was confirmed via laparotomy. Adhesion group: The cecum was removed from the abdomen and scraped with a dry gauze bandage until petechial hemorrhagic foci developed. Cordycepin group: The same surgical procedure was performed as in the adhesion group, and 10 mg/kg cordycepin was administered intraperitoneally. After 15 days, the rats were sacrificed humanely via cardiac blood withdrawal under anesthesia. The rats were then analyzed morphologically and histopathologically, and hydroxyproline (OH-p) and malondialdehyde (MDA) levels were measured. RESULTS: Macroscopic analysis revealed significantly less adhesion in the cordycepin group than in the adhesion group (p<0.01). Furthermore, significant histopathological improvement was also evident in the cordycepin group compared to the adhesion group (p<0.05). The levels of OH-p and MDA in blood and tissue were higher in the adhesion group than in the control group, and lower in the cordycepin group than the adhesion group. Interestingly, MDA level was significantly lower (blood: p<0.05; tissue: p<0.01) in the cordycepin group than in the adhesion group, whereas only tissue OH-p was significantly lower in the cordycepin group compared with the adhesion group (p<0.05). One rat in both adhesion group and cordycepin group died postoperatively. CONCLUSION: Results indicated that cordycepin effectively reduced adhesion in a rat abrasion model. Thus, this agent may be valuable to prevent postoperative adhesion.