Aim To differentiate the genuine cassia bark from its substitutes and adulterants. Methods Six components, phenylpropyl acetate, cinnamyl acetate, cinnamaldehyde, cinnamyl alcohol, coumarin, and cinnamic acid were use...Aim To differentiate the genuine cassia bark from its substitutes and adulterants. Methods Six components, phenylpropyl acetate, cinnamyl acetate, cinnamaldehyde, cinnamyl alcohol, coumarin, and cinnamic acid were used as characteristic markers, and an optimized TLC method was developed. Results The TLC profile of cassia bark is similar to its closely related variety Cinnamomum cassia Presl var. macrophyllum Chu but significantly different from other six Cinnamomum species. High content of phenylpropyl acet...展开更多
AIM： To determine the clinical data that might be useful for differentiating benign from malignant gallbladder （GB） polyps by comparing radiological methods, including abdominal ultrasonography （US） and computed ...AIM： To determine the clinical data that might be useful for differentiating benign from malignant gallbladder （GB） polyps by comparing radiological methods, including abdominal ultrasonography （US） and computed tomography （CT） scanning, with postoperative pathology findings. METHODS： Fifty-nine patients underwent laparoscopic cholecystectomy for a GB polyp of around 10 ram. They were divided into two groups, one with cholesterol polyps and the other with non-cholesterol polyps. Clinical features such as gender, age, symptoms, size and number of polyps, the presence of a GB stone, the radiologically measured maximum diameter of the polyp by US and CT scanning, and the measurements of diameter from postoperative pathology were recorded for comparative analysis. RESULTS： Fifteen of the 41 cases with cholesterol polyps （36.6%） were detected with US but not CT scanning, whereas all 18 non-cholesterol polyps were observed using both methods. In the cholesterol polyp group, the maximum measured diameter of the polyp was smaller by CT scan than by US.Consequently, the discrepancy between those two scanning measurements was greater than for the non- cholesterol polyp group. CONCLUSION： The clinical signs indicative of a cholesterol polyp include： （1） a polyp observed by US but not observable by CT scanning, （2） a smaller diameter on the CT scan compared to US, and （3） a discrepancy in its maximum diameter between US and CT measurements. In addition, US and the CT scan had low accuracy in predicting the polyp diameter compared to that determined by postoperative pathology.展开更多
Recently, several reports have demonstrated that fluorine-18 fluorodeoxyglucose positron emission tomography （FDG-PET） is useful in differentiating between benign and malignant lesions in the gallbladder. However, t...Recently, several reports have demonstrated that fluorine-18 fluorodeoxyglucose positron emission tomography （FDG-PET） is useful in differentiating between benign and malignant lesions in the gallbladder. However, there is a limitation in the ability of FDG-PET to differentiate between inflammatory and malignant lesions. We herein present a case of xanthogranulomatous cholecystitis misdiagnosed as gallbladder carcinoma by ultrasonography and computed tomography. FDG-PET also showed increased activity. In this case, FDG-PET findings resulted in a false-positive for the diagnosis of gallbladder carcinoma.展开更多
Objective To establish the normal measurements of diameter of extraocular muscles (EOMs) by multislice computed tomography (CT). Methods Orbits of 50 volunteers (25 male and 25 female) were scanned with a multislice C...Objective To establish the normal measurements of diameter of extraocular muscles (EOMs) by multislice computed tomography (CT). Methods Orbits of 50 volunteers (25 male and 25 female) were scanned with a multislice CT scanner. For each subject, one axial image at the central level of the eyeball, one coronal image about 1 cm behind globe, and two oblique sagittal images respectively along the left and right optic nerve were used for measurements of the thickness and width of EOMs. The statistic significance of measurement value between male and female and between left and right eyes was evaluated. Results There were no significant differences in the thickness and width of superior muscle group, lateral rectus, medial rectus, lateral rectus, superior oblique, inferior oblique and the thickness of levator palpebrae superioris between the left and right eyes as well as between male and female groups (all P>0.05). The thickness of superior muscle group and inferior rectus had not significant difference (2.9±0.7 vs. 3.3±0.8 mm, P=0.162), while the thickness of medial rectus was significantly higher than that of lateral rectus (3.1±0.5 vs. 2.2±0.6 mm, P=0.000). Conclusions The CT measurement of extraocular musculature is simple and time-saving and can be applied in the clinical work. The normative data obtained may be useful in determining pathologic enlargement of the EOMs in both thyroid-associated orbitopathy patients and other various orbital conditions.展开更多
DRIMARY benign ureteral tumors are rare and they arise from the mesodermal tissue of the ureteral wall. Less than 200 cases have been docu- mented in published reports.1 Bilateral ureteralfibroepithelial polyps are ex...DRIMARY benign ureteral tumors are rare and they arise from the mesodermal tissue of the ureteral wall. Less than 200 cases have been docu- mented in published reports.1 Bilateral ureteralfibroepithelial polyps are extremely rare and commonly occur in the proximal ureter, causing complete ureteral obstruction. Pyeloplasty is an effective treatment for im- proving renal function. Here we report a case with se- quential bilateral ureteral fibroepithelial polyps causing obstructive hydronephrosis.展开更多
Objective To assess the clinical values of computed tomographic colonography （CTC） in diagnosis of colonic polyps. Methods Forty-two patients who were clinically suspicious of colonic polyps or underwent colonic po...Objective To assess the clinical values of computed tomographic colonography （CTC） in diagnosis of colonic polyps. Methods Forty-two patients who were clinically suspicious of colonic polyps or underwent colonic polyps screening received examinations with both CTC and conventional colonoscopy. Sixteen- or 64-slice spiral computed tomography and professional imaging processing techniques were used for evaluation. Per-polyp and per-patient results were analyzed. Those by per-polyp were subsequently divided into ≥10 mm group, 5-10 mm group, and ≤5 mm group. Sensitivity, positive predictive value （PPV）, specificity, negative predictive value （NPV）, and accuracy were calculated using statistical method for diagnostic studies, with conventional colonoscopy as a gold standard. Results Ninety and 61 polyps were found by CTC and conventional colonoscopy, respectively. The per-polyp sensitivity/PPV were 80.3%/55.6% in total, and 100%/92.9%, 93.8%/65.2%, and 68.8%/ 41.5% in the ≥10 mm group, 5-10 mm group, and ≤5 turn group, respectively. The per-patient sensitivity, PPV, specificity, NPV, and accuracy were 97.1%, 89.5%, 42.9%, 75.0%, and 88.1%, respectively. Conclusion CTC can clearly reveal the morphology of colonic polyps and be used as a routine monitoring method for the clinical diagnosis of polyps.展开更多
Primary cardiac tumors are quite rare and most of these tumors are benign.In this report,a patient presented with chest distress and shortness of breath after activity.Echocardiography of other hospital showed a hyper...Primary cardiac tumors are quite rare and most of these tumors are benign.In this report,a patient presented with chest distress and shortness of breath after activity.Echocardiography of other hospital showed a hyperechoic right atrial mass.Electrocardiogram-gated cardiac computed tomography(ECG-Gated CT) of our hospital provided accurate information about the site and extent of the tumor,and the involvement of neighboring structures,even about the malignant nature of the lesion.The pathological study indicated angiosarcoma.The role of ECG-Gated CT in the assessment of cardiac masses and tumors was discussed.Cardiac tumors are extremely rare and can be divided into benign and malignant lesions.Myxomas are the most common type of cardiac benign tumor,while angiosarcomas are the most common type of cardiac malignant tumor.Imaging studies play an important role in the diagnosis of cardiac angiosarcomas.Echocardiogram,computed tomography(CT) and magnetic resonance imaging(MRI) are the most common imaging studies for tumors evaluation.However,the precise tumor location is often difficult to evaluate precisely on the basis of two-dimensional source images.We conducted ECG-gated cardiac CT examination with 3D reconstruction for preoperative assessment in a patient with a angiosarcoma arising in the right atrium.展开更多
Chondrosarcoma(CS) of larynx is uncommon and predominantly affects the cricoid cartilage.A 70% to 75% of these tumors arise on the endolaryngeal surface of the posterior lamina of the cricoid cartilage.The clinical pr...Chondrosarcoma(CS) of larynx is uncommon and predominantly affects the cricoid cartilage.A 70% to 75% of these tumors arise on the endolaryngeal surface of the posterior lamina of the cricoid cartilage.The clinical presentation include hoarseness,stridor,dyspnea,or a neck mass etc.The diagnosis is suggested when calcification is identified in a laryngeal tumor.Computed tomography(CT) is the best noninvasive technique for imaging the lesion.Surgical extirpation is the standard therapy with no role for radiation therapy or chemotherapy.展开更多
Myeloid sarcoma(MS)is a rare hematological neoplasm that develops either de novo or concurrently with acute myeloid leukemia(AML).This neoplasm can also be an initial manifestation of relapse in a previously treated A...Myeloid sarcoma(MS)is a rare hematological neoplasm that develops either de novo or concurrently with acute myeloid leukemia(AML).This neoplasm can also be an initial manifestation of relapse in a previously treated AML that is in remission.A 44-year-old male patient was diagnosed with testis MS in a local hospital in August 2010.After one month,bone marrow biopsy and aspiration confirmed the diagnosis of AML.Allogeneic mobilization peripheral blood stem cell transplantation was performed,with the sister of the patient as donor,after complete remission(CR)was achieved by chemotherapy.Five months after treatment,an adrenal mass was detected by positron emission tomography-computed tomography(PET-CT).Radiotherapy was performed for the localized mass after a multidisciplinary team(MDT)discussion.The patient is still alive as of May 2013,with no evidence of recurrent MS or leukemia.展开更多
Liquid metals(LMs)are potential inorganic materials which could be applied in flexible and deformable electronics owing to their fluidity,low viscosity,high metallic conductivity,and low toxicity.However,recently repo...Liquid metals(LMs)are potential inorganic materials which could be applied in flexible and deformable electronics owing to their fluidity,low viscosity,high metallic conductivity,and low toxicity.However,recently reported sensing devices based on LMs required complex processes with high cost.Herein,a flexible three-dimensional(3 D)conductive network was prepared by coating LM droplets onto an electrospun thermoplastic polyurethane(TPU)fiber film.The LM is suspended between the TPU fibers and self-coalesces into a vertically buckled and laterally mesh-like structure,which provides good biocompatibility,conductivity,and stretchability simultaneously.The LM-TPU composite-filmbased flexible device demonstrates a multitude of desired features,such as a widely workable stretching range(0%-200%),sufficient sensitivity under stretching strain(gauge factor(GF)of 0.2 at 200%strain),and outstanding stability and durability(9000 cycles).In vitro biocompatibility experiments show that the LM-TPU composite film directly attached to the skin has excellent biocompatibility.Such strain sensorbased integrated monitoring systems could monitor human body motions in real time,such as muscle movement and joint motion,revealing application prospects in healthcare and human-machine interfacing.展开更多
文摘Aim To differentiate the genuine cassia bark from its substitutes and adulterants. Methods Six components, phenylpropyl acetate, cinnamyl acetate, cinnamaldehyde, cinnamyl alcohol, coumarin, and cinnamic acid were used as characteristic markers, and an optimized TLC method was developed. Results The TLC profile of cassia bark is similar to its closely related variety Cinnamomum cassia Presl var. macrophyllum Chu but significantly different from other six Cinnamomum species. High content of phenylpropyl acet...
基金Supported by IN-SUNG Foundation for medical research
文摘AIM： To determine the clinical data that might be useful for differentiating benign from malignant gallbladder （GB） polyps by comparing radiological methods, including abdominal ultrasonography （US） and computed tomography （CT） scanning, with postoperative pathology findings. METHODS： Fifty-nine patients underwent laparoscopic cholecystectomy for a GB polyp of around 10 ram. They were divided into two groups, one with cholesterol polyps and the other with non-cholesterol polyps. Clinical features such as gender, age, symptoms, size and number of polyps, the presence of a GB stone, the radiologically measured maximum diameter of the polyp by US and CT scanning, and the measurements of diameter from postoperative pathology were recorded for comparative analysis. RESULTS： Fifteen of the 41 cases with cholesterol polyps （36.6%） were detected with US but not CT scanning, whereas all 18 non-cholesterol polyps were observed using both methods. In the cholesterol polyp group, the maximum measured diameter of the polyp was smaller by CT scan than by US.Consequently, the discrepancy between those two scanning measurements was greater than for the non- cholesterol polyp group. CONCLUSION： The clinical signs indicative of a cholesterol polyp include： （1） a polyp observed by US but not observable by CT scanning, （2） a smaller diameter on the CT scan compared to US, and （3） a discrepancy in its maximum diameter between US and CT measurements. In addition, US and the CT scan had low accuracy in predicting the polyp diameter compared to that determined by postoperative pathology.
文摘Recently, several reports have demonstrated that fluorine-18 fluorodeoxyglucose positron emission tomography （FDG-PET） is useful in differentiating between benign and malignant lesions in the gallbladder. However, there is a limitation in the ability of FDG-PET to differentiate between inflammatory and malignant lesions. We herein present a case of xanthogranulomatous cholecystitis misdiagnosed as gallbladder carcinoma by ultrasonography and computed tomography. FDG-PET also showed increased activity. In this case, FDG-PET findings resulted in a false-positive for the diagnosis of gallbladder carcinoma.
文摘Objective To establish the normal measurements of diameter of extraocular muscles (EOMs) by multislice computed tomography (CT). Methods Orbits of 50 volunteers (25 male and 25 female) were scanned with a multislice CT scanner. For each subject, one axial image at the central level of the eyeball, one coronal image about 1 cm behind globe, and two oblique sagittal images respectively along the left and right optic nerve were used for measurements of the thickness and width of EOMs. The statistic significance of measurement value between male and female and between left and right eyes was evaluated. Results There were no significant differences in the thickness and width of superior muscle group, lateral rectus, medial rectus, lateral rectus, superior oblique, inferior oblique and the thickness of levator palpebrae superioris between the left and right eyes as well as between male and female groups (all P>0.05). The thickness of superior muscle group and inferior rectus had not significant difference (2.9±0.7 vs. 3.3±0.8 mm, P=0.162), while the thickness of medial rectus was significantly higher than that of lateral rectus (3.1±0.5 vs. 2.2±0.6 mm, P=0.000). Conclusions The CT measurement of extraocular musculature is simple and time-saving and can be applied in the clinical work. The normative data obtained may be useful in determining pathologic enlargement of the EOMs in both thyroid-associated orbitopathy patients and other various orbital conditions.
文摘DRIMARY benign ureteral tumors are rare and they arise from the mesodermal tissue of the ureteral wall. Less than 200 cases have been docu- mented in published reports.1 Bilateral ureteralfibroepithelial polyps are extremely rare and commonly occur in the proximal ureter, causing complete ureteral obstruction. Pyeloplasty is an effective treatment for im- proving renal function. Here we report a case with se- quential bilateral ureteral fibroepithelial polyps causing obstructive hydronephrosis.
文摘Objective To assess the clinical values of computed tomographic colonography （CTC） in diagnosis of colonic polyps. Methods Forty-two patients who were clinically suspicious of colonic polyps or underwent colonic polyps screening received examinations with both CTC and conventional colonoscopy. Sixteen- or 64-slice spiral computed tomography and professional imaging processing techniques were used for evaluation. Per-polyp and per-patient results were analyzed. Those by per-polyp were subsequently divided into ≥10 mm group, 5-10 mm group, and ≤5 mm group. Sensitivity, positive predictive value （PPV）, specificity, negative predictive value （NPV）, and accuracy were calculated using statistical method for diagnostic studies, with conventional colonoscopy as a gold standard. Results Ninety and 61 polyps were found by CTC and conventional colonoscopy, respectively. The per-polyp sensitivity/PPV were 80.3%/55.6% in total, and 100%/92.9%, 93.8%/65.2%, and 68.8%/ 41.5% in the ≥10 mm group, 5-10 mm group, and ≤5 turn group, respectively. The per-patient sensitivity, PPV, specificity, NPV, and accuracy were 97.1%, 89.5%, 42.9%, 75.0%, and 88.1%, respectively. Conclusion CTC can clearly reveal the morphology of colonic polyps and be used as a routine monitoring method for the clinical diagnosis of polyps.
文摘Primary cardiac tumors are quite rare and most of these tumors are benign.In this report,a patient presented with chest distress and shortness of breath after activity.Echocardiography of other hospital showed a hyperechoic right atrial mass.Electrocardiogram-gated cardiac computed tomography(ECG-Gated CT) of our hospital provided accurate information about the site and extent of the tumor,and the involvement of neighboring structures,even about the malignant nature of the lesion.The pathological study indicated angiosarcoma.The role of ECG-Gated CT in the assessment of cardiac masses and tumors was discussed.Cardiac tumors are extremely rare and can be divided into benign and malignant lesions.Myxomas are the most common type of cardiac benign tumor,while angiosarcomas are the most common type of cardiac malignant tumor.Imaging studies play an important role in the diagnosis of cardiac angiosarcomas.Echocardiogram,computed tomography(CT) and magnetic resonance imaging(MRI) are the most common imaging studies for tumors evaluation.However,the precise tumor location is often difficult to evaluate precisely on the basis of two-dimensional source images.We conducted ECG-gated cardiac CT examination with 3D reconstruction for preoperative assessment in a patient with a angiosarcoma arising in the right atrium.
文摘Chondrosarcoma(CS) of larynx is uncommon and predominantly affects the cricoid cartilage.A 70% to 75% of these tumors arise on the endolaryngeal surface of the posterior lamina of the cricoid cartilage.The clinical presentation include hoarseness,stridor,dyspnea,or a neck mass etc.The diagnosis is suggested when calcification is identified in a laryngeal tumor.Computed tomography(CT) is the best noninvasive technique for imaging the lesion.Surgical extirpation is the standard therapy with no role for radiation therapy or chemotherapy.
文摘Myeloid sarcoma(MS)is a rare hematological neoplasm that develops either de novo or concurrently with acute myeloid leukemia(AML).This neoplasm can also be an initial manifestation of relapse in a previously treated AML that is in remission.A 44-year-old male patient was diagnosed with testis MS in a local hospital in August 2010.After one month,bone marrow biopsy and aspiration confirmed the diagnosis of AML.Allogeneic mobilization peripheral blood stem cell transplantation was performed,with the sister of the patient as donor,after complete remission(CR)was achieved by chemotherapy.Five months after treatment,an adrenal mass was detected by positron emission tomography-computed tomography(PET-CT).Radiotherapy was performed for the localized mass after a multidisciplinary team(MDT)discussion.The patient is still alive as of May 2013,with no evidence of recurrent MS or leukemia.
基金supported by the National Natural Science Foundation of China(61625404,61888102,and 62174152)Foshan Innovative and Entrepreneurial Research Team Program(2018IT100031)。
文摘Liquid metals(LMs)are potential inorganic materials which could be applied in flexible and deformable electronics owing to their fluidity,low viscosity,high metallic conductivity,and low toxicity.However,recently reported sensing devices based on LMs required complex processes with high cost.Herein,a flexible three-dimensional(3 D)conductive network was prepared by coating LM droplets onto an electrospun thermoplastic polyurethane(TPU)fiber film.The LM is suspended between the TPU fibers and self-coalesces into a vertically buckled and laterally mesh-like structure,which provides good biocompatibility,conductivity,and stretchability simultaneously.The LM-TPU composite-filmbased flexible device demonstrates a multitude of desired features,such as a widely workable stretching range(0%-200%),sufficient sensitivity under stretching strain(gauge factor(GF)of 0.2 at 200%strain),and outstanding stability and durability(9000 cycles).In vitro biocompatibility experiments show that the LM-TPU composite film directly attached to the skin has excellent biocompatibility.Such strain sensorbased integrated monitoring systems could monitor human body motions in real time,such as muscle movement and joint motion,revealing application prospects in healthcare and human-machine interfacing.
