Pub Date : 2021-01-01DOI: 10.4103/ijdpdd.ijdpdd_42_20
B. Ankad, V. Koti, Sahebpatel Mahajabeen, Balakrishna P. Nikam
{"title":"Dermoscopic evaluation of crusted scabies: A case report","authors":"B. Ankad, V. Koti, Sahebpatel Mahajabeen, Balakrishna P. Nikam","doi":"10.4103/ijdpdd.ijdpdd_42_20","DOIUrl":"https://doi.org/10.4103/ijdpdd.ijdpdd_42_20","url":null,"abstract":"","PeriodicalId":423971,"journal":{"name":"Indian Journal of Dermatopathology and Diagnostic Dermatology","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124456509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.4103/ijdpdd.ijdpdd_108_20
Arunima Ray, I. Agrawal, R. Patnayak, B. Kar
{"title":"Leukemia cutis presenting as non-healing ulcers with marginal umbilicated nodules","authors":"Arunima Ray, I. Agrawal, R. Patnayak, B. Kar","doi":"10.4103/ijdpdd.ijdpdd_108_20","DOIUrl":"https://doi.org/10.4103/ijdpdd.ijdpdd_108_20","url":null,"abstract":"","PeriodicalId":423971,"journal":{"name":"Indian Journal of Dermatopathology and Diagnostic Dermatology","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131564570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.4103/ijdpdd.ijdpdd_93_20
A. Salloum, Julien Bachour, Nagham Bazzi, H. Mégarbané
Pseudoepitheliomatous keratotic and micaceous balanitis (PKMB), an uncommon glans penis skin disorder, affects mainly elderly men and can progress to verrucous carcinoma or invasive squamous cell carcinoma. A 22-year-old male presented with a 5-year history of a slightly pruritic thick scaly plaque on the glans penis that appeared 2 months after undergoing circumcision. Physical examination revealed a well-defined hyperkeratotic plaque with thin mica-like scales. Histological examination of previous biopsies showed acanthosis with elongation of the rete ridges, prominent granular cell layer, and marked orthokeratotic hyperkeratosis. The diagnosis of plaque-stage PKMB was made. The patient had monthly sessions of topical liquid nitrogen and after 20 weeks, the plaque shrank significantly.
{"title":"Pseudoepitheliomatous keratotic and micaceous balanitis: A distinct entity","authors":"A. Salloum, Julien Bachour, Nagham Bazzi, H. Mégarbané","doi":"10.4103/ijdpdd.ijdpdd_93_20","DOIUrl":"https://doi.org/10.4103/ijdpdd.ijdpdd_93_20","url":null,"abstract":"Pseudoepitheliomatous keratotic and micaceous balanitis (PKMB), an uncommon glans penis skin disorder, affects mainly elderly men and can progress to verrucous carcinoma or invasive squamous cell carcinoma. A 22-year-old male presented with a 5-year history of a slightly pruritic thick scaly plaque on the glans penis that appeared 2 months after undergoing circumcision. Physical examination revealed a well-defined hyperkeratotic plaque with thin mica-like scales. Histological examination of previous biopsies showed acanthosis with elongation of the rete ridges, prominent granular cell layer, and marked orthokeratotic hyperkeratosis. The diagnosis of plaque-stage PKMB was made. The patient had monthly sessions of topical liquid nitrogen and after 20 weeks, the plaque shrank significantly.","PeriodicalId":423971,"journal":{"name":"Indian Journal of Dermatopathology and Diagnostic Dermatology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127167124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.4103/ijdpdd.ijdpdd_53_20
Monal Trisal, Sabina Khan, M. Husain, M. Hassan, N. Ahmad, S. Jetley
Malignant glomus tumors (GTs) are very rare, and diagnosis requires consideration of specific histologic criteria based on a combination of criteria such as size of the tumor, degree of nuclear atypia, and the level of mitotic activity. GTs that do not fulfill the histologic criteria for malignancy but show at least one feature other than nuclear atypia should be classified as GT of uncertain malignant potential (GTUMP). We report the case of a 65-year-old female with a slowly progressing soft-tissue swelling in the right lower arm near the elbow joint that was successfully treated through wide surgical excision and histologically diagnosed as a GTUMP. On follow-up after 3 months, there was no evidence of recurrence or metastasis. Malignant GTs and GTUMPs are rare, and the nomenclature and classification of these tumors is controversial. These findings and the difficulty of differential diagnosis in a continuum between benignity and malignancy prompted our report.
{"title":"Glomus tumor of uncertain malignant potential in the arm of an elderly female – Report of an unusual case","authors":"Monal Trisal, Sabina Khan, M. Husain, M. Hassan, N. Ahmad, S. Jetley","doi":"10.4103/ijdpdd.ijdpdd_53_20","DOIUrl":"https://doi.org/10.4103/ijdpdd.ijdpdd_53_20","url":null,"abstract":"Malignant glomus tumors (GTs) are very rare, and diagnosis requires consideration of specific histologic criteria based on a combination of criteria such as size of the tumor, degree of nuclear atypia, and the level of mitotic activity. GTs that do not fulfill the histologic criteria for malignancy but show at least one feature other than nuclear atypia should be classified as GT of uncertain malignant potential (GTUMP). We report the case of a 65-year-old female with a slowly progressing soft-tissue swelling in the right lower arm near the elbow joint that was successfully treated through wide surgical excision and histologically diagnosed as a GTUMP. On follow-up after 3 months, there was no evidence of recurrence or metastasis. Malignant GTs and GTUMPs are rare, and the nomenclature and classification of these tumors is controversial. These findings and the difficulty of differential diagnosis in a continuum between benignity and malignancy prompted our report.","PeriodicalId":423971,"journal":{"name":"Indian Journal of Dermatopathology and Diagnostic Dermatology","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130741545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.4103/ijdpdd.ijdpdd_85_20
M. Madakshira, B. Radotra, U. Saikia
Background: Psoriasis is a chronic remitting and relapsing inflammatory disease, with a prevalence of 0.44%–2.5% and is characterized by T-cell-mediated rapid turnover of epithelial cells. Claudin-1 protein is an integral part of the keratinocyte tight junction and has a role in proliferation, differentiation, and cell adhesion. Aim: The aim of the study was to investigate the role of claudin-1 expression in relation to keratinocyte proliferation in psoriasis. Materials and Methods: Fifty cases of psoriasis were included in the study. Skin biopsies were subjected to claudin-1 and Ki67 immunohistochemistry. Claudin-1 expression in the basal and spinous layers was scored. Ki67 proliferation index was assessed. Seven cases of normal skin biopsies were also included as controls. Fisher's exact test was applied for statistical analysis. Results: The cases had a wide age range (14–78 years), with a mean of 46 years with a male preponderance (4:1). The basal cell layer showed a complete loss of expression for claudin-1 in 82% (n = 42). The spinous layer showed a decrescendo pattern of loss of claudin-1 expression in 96% (n = 48). The association of loss of expression of claudin-1 between the basal layer and spinous layer was statistically significant (P = 0.0229). The association of loss of expression of claudin-1 and high Ki67 proliferative index was also statistically significant (P < 0.00001). Conclusion: Our study showed consistent loss of expression of claudin-1 in the lower layers of the epidermis in psoriasis, which is also the site of intense proliferative activity. The cytokine soup released by the T-cells may be responsible for downregulation of claudin-1, which is one of the triggers for proliferation.
{"title":"Loss of expression of claudin-1 in psoriasis is associated with proliferative state of keratinocytes","authors":"M. Madakshira, B. Radotra, U. Saikia","doi":"10.4103/ijdpdd.ijdpdd_85_20","DOIUrl":"https://doi.org/10.4103/ijdpdd.ijdpdd_85_20","url":null,"abstract":"Background: Psoriasis is a chronic remitting and relapsing inflammatory disease, with a prevalence of 0.44%–2.5% and is characterized by T-cell-mediated rapid turnover of epithelial cells. Claudin-1 protein is an integral part of the keratinocyte tight junction and has a role in proliferation, differentiation, and cell adhesion. Aim: The aim of the study was to investigate the role of claudin-1 expression in relation to keratinocyte proliferation in psoriasis. Materials and Methods: Fifty cases of psoriasis were included in the study. Skin biopsies were subjected to claudin-1 and Ki67 immunohistochemistry. Claudin-1 expression in the basal and spinous layers was scored. Ki67 proliferation index was assessed. Seven cases of normal skin biopsies were also included as controls. Fisher's exact test was applied for statistical analysis. Results: The cases had a wide age range (14–78 years), with a mean of 46 years with a male preponderance (4:1). The basal cell layer showed a complete loss of expression for claudin-1 in 82% (n = 42). The spinous layer showed a decrescendo pattern of loss of claudin-1 expression in 96% (n = 48). The association of loss of expression of claudin-1 between the basal layer and spinous layer was statistically significant (P = 0.0229). The association of loss of expression of claudin-1 and high Ki67 proliferative index was also statistically significant (P < 0.00001). Conclusion: Our study showed consistent loss of expression of claudin-1 in the lower layers of the epidermis in psoriasis, which is also the site of intense proliferative activity. The cytokine soup released by the T-cells may be responsible for downregulation of claudin-1, which is one of the triggers for proliferation.","PeriodicalId":423971,"journal":{"name":"Indian Journal of Dermatopathology and Diagnostic Dermatology","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131621768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.4103/ijdpdd.ijdpdd_9_20
K. Roopa, M. Jadhav, S. Kittur, G. Pise
Primary cutaneous mucinous carcinoma is a rare slowly growing neoplasm showing predilection for the head and neck, particularly the eyelids. On occasion, it affects other sites including scalp, face, ear, axillae, thorax, abdomen, groin, foot, hand, and vulva. Fewer than 150 cases have been reported in the literature. A 70-year-old man presented with an asymptomatic raised lesion over the left side of the face for 1 year. Microscopically, the diagnosis of primary cutaneous mucinous carcinoma was made, which was later confirmed by immunohistochemistry. Mucinous carcinoma of the skin has a relatively good prognosis with rare distant metastases, but has risk of local recurrence. Diagnosing it and differentiating it from metastatic carcinoma helps the clinician in further management of the patient.
{"title":"Primary cutaneous mucinous carcinoma: A rare case report","authors":"K. Roopa, M. Jadhav, S. Kittur, G. Pise","doi":"10.4103/ijdpdd.ijdpdd_9_20","DOIUrl":"https://doi.org/10.4103/ijdpdd.ijdpdd_9_20","url":null,"abstract":"Primary cutaneous mucinous carcinoma is a rare slowly growing neoplasm showing predilection for the head and neck, particularly the eyelids. On occasion, it affects other sites including scalp, face, ear, axillae, thorax, abdomen, groin, foot, hand, and vulva. Fewer than 150 cases have been reported in the literature. A 70-year-old man presented with an asymptomatic raised lesion over the left side of the face for 1 year. Microscopically, the diagnosis of primary cutaneous mucinous carcinoma was made, which was later confirmed by immunohistochemistry. Mucinous carcinoma of the skin has a relatively good prognosis with rare distant metastases, but has risk of local recurrence. Diagnosing it and differentiating it from metastatic carcinoma helps the clinician in further management of the patient.","PeriodicalId":423971,"journal":{"name":"Indian Journal of Dermatopathology and Diagnostic Dermatology","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125480763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.4103/ijdpdd.ijdpdd_4_20
N. Kartha, K. Sobhanakumari, Predesh Jose
Histiocytic sarcoma is a rare hematolymphoid neoplasm originating from histiocytic cell clones. The lesions can occur in nodal or extranodal sites. A minority of cases present as unique cutaneous lesions. The definitive diagnosis is made by immunohistochemistry. The treatment depends on the severity of the disease. Herein, we report a case of histiocytic sarcoma in a 65-year-old female presenting with subcutaneous swellings and ulcerated coalescing nodules on the forearms and thighs with metastasis to the lung and treated with systemic chemotherapy.
{"title":"Histiocytic sarcoma: An encounter with a rarity","authors":"N. Kartha, K. Sobhanakumari, Predesh Jose","doi":"10.4103/ijdpdd.ijdpdd_4_20","DOIUrl":"https://doi.org/10.4103/ijdpdd.ijdpdd_4_20","url":null,"abstract":"Histiocytic sarcoma is a rare hematolymphoid neoplasm originating from histiocytic cell clones. The lesions can occur in nodal or extranodal sites. A minority of cases present as unique cutaneous lesions. The definitive diagnosis is made by immunohistochemistry. The treatment depends on the severity of the disease. Herein, we report a case of histiocytic sarcoma in a 65-year-old female presenting with subcutaneous swellings and ulcerated coalescing nodules on the forearms and thighs with metastasis to the lung and treated with systemic chemotherapy.","PeriodicalId":423971,"journal":{"name":"Indian Journal of Dermatopathology and Diagnostic Dermatology","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115572170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.4103/ijdpdd.ijdpdd_98_20
Y. Bhat, Safia Bashir, Rohi Wani, N. Saqib
{"title":"Dermoscopy of actinic keratosis in skin of color","authors":"Y. Bhat, Safia Bashir, Rohi Wani, N. Saqib","doi":"10.4103/ijdpdd.ijdpdd_98_20","DOIUrl":"https://doi.org/10.4103/ijdpdd.ijdpdd_98_20","url":null,"abstract":"","PeriodicalId":423971,"journal":{"name":"Indian Journal of Dermatopathology and Diagnostic Dermatology","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121119668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.4103/ijdpdd.ijdpdd_17_20
B. Srinivasamurthy, R. Bhat
Myxoid neurothekeomas are rare benign soft-tissue tumors that are considered to be of the nerve sheath origin. They usually occur in young most commonly on the upper extremities, head, and neck, with a predilection for the female population. Based on histomorphological appearance and immunohistochemical findings, there are three variants of neurothekeoma myxoid, cellular, and mixed type. The myxoid type is characterized by a greater degree of myxomatous changes, less cellularity with well-circumscribed spindle cells in the myxoid matrix, and stain positively for S-100. This has to be differentiated from several myxoid soft-tissue tumors. We present a rare case of myxoid neurothekeoma occurring in elderly females in the toe of the lower extremity.
{"title":"Subungual myxoid neurothekeoma of the toe: A rare entity","authors":"B. Srinivasamurthy, R. Bhat","doi":"10.4103/ijdpdd.ijdpdd_17_20","DOIUrl":"https://doi.org/10.4103/ijdpdd.ijdpdd_17_20","url":null,"abstract":"Myxoid neurothekeomas are rare benign soft-tissue tumors that are considered to be of the nerve sheath origin. They usually occur in young most commonly on the upper extremities, head, and neck, with a predilection for the female population. Based on histomorphological appearance and immunohistochemical findings, there are three variants of neurothekeoma myxoid, cellular, and mixed type. The myxoid type is characterized by a greater degree of myxomatous changes, less cellularity with well-circumscribed spindle cells in the myxoid matrix, and stain positively for S-100. This has to be differentiated from several myxoid soft-tissue tumors. We present a rare case of myxoid neurothekeoma occurring in elderly females in the toe of the lower extremity.","PeriodicalId":423971,"journal":{"name":"Indian Journal of Dermatopathology and Diagnostic Dermatology","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132705579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.4103/ijdpdd.ijdpdd_33_20
M. Madakshira, A. Bishnoi, D. De, M. Sachdeva, U. Saikia
Background/Objectives: Only anecdotal case reports or small case series have attempted to study the histomorphology patterns of leukemic infiltration. This study explored the possible association of leukemia cutis with, temporal course of disease, subtypes of leukemia, blast count, total leukocyte count, lactate dehydrogenase (LDH) levels, and histopathological patterns. Materials and Methods: Clinical and laboratory data were retrieved from the hospital information system. Selected cases were reviewed by two pathologists. Data in terms of demographics, clinical presentation, bone marrow findings, immunophenotype, and temporal course were recorded where available. Results: Twenty-three diagnosed cases of leukemia cutis were reported during the study period. There was no gender predilection with a wide age range (8–82 years). No particular trend was noted in relation to total leukocyte or bone marrow blast count. Common skin manifestations included multiple erythematous papular eruptions, frequently involving the skin of the limbs. All cases showed a consistently high serum LDH level. 11/23 (48%) showed cutaneous manifestation of undiagnosed leukemia or indicated worsening in a diagnosed case. The histological patterns varied from perivascular to diffuse dermal interstitial infiltration. In addition, subtle changes were seen in the form of fibrosis, thrombosis, and epidermotropism in 12%–50% of cases. The judicious use of a panel of immunohistochemistry was vital to establish a diagnosis. Conclusions: Leukemia cutis is a diagnostic challenge on histopathology due to lack of any specific pattern in absence of a clinical suspicion. Its diagnosis may be an indicator of undiagnosed leukemia or worsening in an already known case of leukemia.
{"title":"Leukemia cutis: A study from a tertiary care hospital in North India","authors":"M. Madakshira, A. Bishnoi, D. De, M. Sachdeva, U. Saikia","doi":"10.4103/ijdpdd.ijdpdd_33_20","DOIUrl":"https://doi.org/10.4103/ijdpdd.ijdpdd_33_20","url":null,"abstract":"Background/Objectives: Only anecdotal case reports or small case series have attempted to study the histomorphology patterns of leukemic infiltration. This study explored the possible association of leukemia cutis with, temporal course of disease, subtypes of leukemia, blast count, total leukocyte count, lactate dehydrogenase (LDH) levels, and histopathological patterns. Materials and Methods: Clinical and laboratory data were retrieved from the hospital information system. Selected cases were reviewed by two pathologists. Data in terms of demographics, clinical presentation, bone marrow findings, immunophenotype, and temporal course were recorded where available. Results: Twenty-three diagnosed cases of leukemia cutis were reported during the study period. There was no gender predilection with a wide age range (8–82 years). No particular trend was noted in relation to total leukocyte or bone marrow blast count. Common skin manifestations included multiple erythematous papular eruptions, frequently involving the skin of the limbs. All cases showed a consistently high serum LDH level. 11/23 (48%) showed cutaneous manifestation of undiagnosed leukemia or indicated worsening in a diagnosed case. The histological patterns varied from perivascular to diffuse dermal interstitial infiltration. In addition, subtle changes were seen in the form of fibrosis, thrombosis, and epidermotropism in 12%–50% of cases. The judicious use of a panel of immunohistochemistry was vital to establish a diagnosis. Conclusions: Leukemia cutis is a diagnostic challenge on histopathology due to lack of any specific pattern in absence of a clinical suspicion. Its diagnosis may be an indicator of undiagnosed leukemia or worsening in an already known case of leukemia.","PeriodicalId":423971,"journal":{"name":"Indian Journal of Dermatopathology and Diagnostic Dermatology","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128625376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：