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Coronavirus disease 2019 (COVID-19) pandemic, is a newly conducted respiratory disease caused by infection with the severe acute respiratory syndrome coronavirus 2 (SARS-CoV2). The current study aims to estimate the neurological diseases which develop after COVID-19 infection.This is a single center retrospective case series conducted in seven months. the patients were collected in an out-patient clinic. Diagnosis of COVID-19 and the way of diagnosis is confirmed through either polymerase chain reaction (PCR) test for COVID-19 and/or typical findings on chest computed tomography scan (CT scan). Patients developed neurological symptoms after being infected with COVID-19. Symptoms have to be developed within less than 6 months of recovery, or developed during illness and persisted after recovery.A total number of 59 patients infected with SARS-CoV2 were included. The majority of the patients had mild symptoms 32 (54%), 12 (20%) patients developed severe symptoms. Headache was the most common presenting symptom 27(46%) followed by fatigue in 8 (13.5%). The majority of the patients 55 (91.6%) presented with no focal signs. MRI was done for 27 (46%) patients without abnormal finding in 22 cases. Nearly 22 (37.3%) cases were diagnosed as recurrent episodes of migraine or new onset of migraine. All patients were managed according to the underlying pathology, only (28, 47.5%) patients were known to be completely recovered.SARS-CoV2 can invade and cause inflammation in the central and peripheral nervous systems. It is responsible for many neurological problems. More studies are necessary to analyze the long term effect of the virus on the nervous system.

Chylothorax is the accumulation of chyle in the pleural cavity that typically contains a high concentration of triglycerides. Blunt chest trauma is a rare cause. The aim of this study is to review all of the reported cases of chylothorax caused by blunt chest trauma. Available databases were explored systematically for the condition and the eligible papers were included. The literature search revealed 30 studies with 39 cases, 72.3% of the cases were male, and 21.7% of the patients were female. The age range varied between 4 and 75 years with a mean age of 35.8 years. All of the patients were diagnosed after fluid sampling from the pleural fluid by thoracentesis and/or chest tube insertion. About 71.4% of the patients were treated successfully by conservative management: others (28.6%) were managed surgically. Although it is a rare condition, persistent milky drainage after blunt chest trauma should raise the suspicion of chylothorax. Pleural fluid sampling is the cornerstone of the diagnosis. In the majority of the cases, conservative treatment is quite enough. Surgery is indicated whenever non-operative measures failed.

Introduction Coronavirus disease 2019 (COVID-19) has emerged as severe acute respiratory syndrome coronavirus 2 (SARS-CoV2). Recently, various complications have been reported. The aim of the current study is to report a rare case of transverse myelitis after recovering from COVID-19. Case report A 34-year-old lady, presented with inability to walk for one day duration due to the lower limb weakness. After two weeks from the recovery of COVID-19; she developed progressive intermittent leg pain, paresthesia and weakness on both sides. Brain and cervical MRI showed evidence of a short segment inflammatory enhancing lesion at upper cervical region (at C1 level). The patient was treated conservatively. Discussion Transverse myelitis has many different causes, it occurs as an autoimmune phenomenon post-infection and vaccination, or it may result from direct infection or acquired demyelinating disease like multiple sclerosis. Conclusion Although it is a sporadic finding, SARS-CoV-2 can cause transverse myelitis. The condition responds to medical therapy., Highlights • Coronavirus disease 2019 has emerged as severe acute respiratory syndrome coronavirus 2. • Transverse myelitis (TM) is a very rare neurological complication of COVID-19 disease. • In this report a rare case of post-COVID19 transverse myelitis presented.

Introduction Subcutaneous emphysema is an extremely rare complication after lobectomy. The current study aims to report a case of lung cancer developing extensive subcutaneous emphysema after lobectomy. Case presentation A 73-year-old man presented with dyspnea and cough for one month duration associated with wheeze and sputum. He was a chronic heavy smoker (100 pack/year). Work up revealed squamous cell carcinoma. Although he had poor pulmonary function tests, he underwent left upper lobectomy. On the fifth postoperative day, he was discharged from the hospital as there was no air leak and the lung remained expanded 15 hours after clamping of the thoracostomy tube. Two days later, the patient developed generalized subcutaneous emphysema. The patient was re-admitted to the hospital and a thoracostomy tube was inserted. The lung expanded upon insertion while the subcutaneous emphysema remained the same and even slightly increased over night. A 3 cm incision was made at the left infra-clavicular area and a negative pressure applied to it. The subcutaneous emphysema completely subsided a few hours after this intervention. Discussion Because of the benign course, the majority of cases of subcutaneous emphysema (mild to moderate) only need nonoperative management alongside treatment of the predisposing factors. These patients may need nothing other than bed rest, good analgesia, supplemental oxygen, and reassurance. Conclusion Subcutaneous emphysema after lobectomy prolongs hospital stay. It mainly occurs in cases with poor pulmonary function tests, steroid use, and those with extensive adhesion., Highlights • Subcutaneous emphysema is one of the complications following thoracic surgery. • Subcutaneous emphysema might be a benign and self-limiting condition. • It might be a serious condition that ends with respiratory failure and death. • In this report, a case of lung cancer developing subcutaneous emphysema after lobectomy discussed.

Introduction and importance The thymus is a primary lymphatic organ within the mediastinum that plays an essential role in developing and maintaining cell-mediated immunity. The current study aims to report a case of intra-tumoral osseous metaplasia of the thymus gland, which is an infrequent phenomenon. Case presentation A 43-year-old male presented with weakness and easy fatigability for 2 months. The patient had an elevated anti-acetylcholinesterase antibody (19.5 nmole/L). Magnetic resonance imaging showed a round, capsulated, enhanced mass in the anterior mediastinum measuring 5.5 × 3.5 cm, suspecting thymoma. The patient underwent plasmapheresis three times in one week, under general anesthesia, in a supine position, sternotomy was performed, and the thymoma was totally resected. Discussion Thymomas are known to occur in all age groups with the peak of nearly between 35 and 70 years with the median age of 54 years. The sex distribution of thymoma is approximately equal with slight predilection of women in old age groups. However, among all reported cases of thymomas with osseous metaplasia, the majorities are female. The significance of this ossification is still to be clarified. Conclusion Although it is rare, secondary changes in thymoma may occur including calcification and ossification., Highlights • The thymus is dedicated to the growth of the immunocompetent T-cells. • Thymoma is an uncommon tumor of the thymic epithelium. • Thymoma with osseous metaplasia is a sporadic condition.

Highlights • Extraskeletal chondroma is a benign, slow-growing cartilaginous tumor arising from tenosynovial sheaths. • It may present challenges for the treating physician. • This article reports and discusses a case of extraskeletal chondroma affecting upper thigh., Introduction Extraskeletal chondroma (ESC) is a benign, slow-growing cartilaginous tumor arising from tenosynovial sheaths. The aim of this article is to report and discuss a case of ESC affecting upper thigh. Case report A 41-year-old male presented with a swelling in the medial aspect of the left thigh. On clinical examination, there was a 10 × 15 cm non-tender, hard, ill-defined mass in the medial aspect of the left upper thigh. Ultrasound showed a large well defined thick wall mass, located inside gracillis or adductor muscles. Magnetic resonance imaging showed a large well defined mass involving the adductor compartment of the upper thigh. The patient underwent wide local excision under spinal anesthesia. The histopathological examination of the specimen revealed binucleated chondrocytes with dots of calcification confirming ESC. Discussion There are many theories trying to explain the origin of ESC, as some authors think that it originates from the pluripotent cells of the tenosynovium, while others state that it may be derived from metaplasia of the tendon sheath. In this case, the lesion was completely surrounded by muscle fibers away from the nearby tendons. Conclusion Extraskeletal chondroma is a rare benign lesion, although mostly affect the upper extremities, it can be found anywhere in the body, histopathological examination of the specimen is the diagnostic method of choice.

Highlights • Enterobius vermicularis is one of the commonest parasitic infestations worldwide. • Its association with acute appendicitis remains controversial. • It is very rarely encountered during appendectomy. • In this report, a case of acute appendicitis caused by Enterobius vermicularis has been presented., Introduction Enterobius vermicularis is one of the commonest parasitic infestations worldwide but its association with acute appendicitis remains controversial. It is very rarely encountered during appendectomy. The aim of this paper is to report a case of acute appendicitis caused by Enterobius vermicularis. A 23-year-old housewife presented with a right lower abdominal pain for the past 8 h. Clinical examination revealed right iliac fossa tenderness upon palpation and rebound tenderness upon release. The patient was diagnosed as a case of suspected acute appendicitis. The patient was anesthetized and intubated. Delivery of the vermiform appendix done through right grid iron incision. Intra operatively an inflamed appendix obstructed by Enterobius vermicularis was noted. Conclusion Enterobius vermicularis can habit the appendix and induce the signs and symptoms of A.A with or without actual histopathological acute appendicitis. The treatment of choice is surgical resection of the appendix.

Highlights • Lipoma is the most frequent soft tissue tumor in adults. • Its occurrence in the retroperitoneal region is extremely rare. • It presents with various clinical scenarios. • We present a case of retroperitoneal lipoma with a brief literature review., Introduction lipoma is the most frequent soft tissue tumor in adults. Its occurrence in the retroperitoneal region is extremely rare. The aim of this study is to report a case of retroperitoneal lipoma with a literature review. Presentation of case A 34-year-old female presented with abdominal distension and severe back pain for one year duration. She also reported weight loss and constipation. The examination revealed asymmetrical abdominal distension and everted umbilicus. There was a big irregular mass occupying the whole abdomen reaching into the xiphisternum, firm in consistency, smooth surface, and well defined borders. Abdominal ultrasound demonstrated a large retroperitoneal heterogeneous mass. Computed tomography (CT) scan showed a large well defined hyperechoic mass with fibrous septa extending from the left ovary up to the diaphragm. Exploratory laparotomy revealed a giant clearly demarcated fatty tumor adherent to the retroperitoneal fatty tissues. The histopathological examination of the specimen confirmed the diagnosis of the retroperitoneal lipoma. Discussion Retroperitoneal lipomas have been reported in various age groups; namely children, middle and old age patients. Based on the characteristic radiological features of the tumor, enormous diagnostic work-up is not justified. Conclusion Retroperitoneal lipoma is a very rare variant of lipoma, presents with various signs and symptoms that may be misleading. Radiologic imaging especially CT scan is the diagnostic tool of choice. Surgical resection is the main modality of management.

Introduction and importance Lymph node metastasis is the most prominent prognostic factor in breast cancer. The aim of this paper is to report a case of contralateral axillary lymph node metastasis (CAM) which look like metachronous initially, but histopathologicaly confirmed as synchronous CAM. Case presentation A-44-year old female was a known case of left breast cancer five years prior to this presentation (T2,N2,M0, grade III, Triple negative, multifocal invasive ductal carcinoma). On follow up, multiple contralateral axillary suspicious lymph nodes were discovered. Fine Needle Aspiration Cytology from the lesion revealed grade III, Triple negative, invasive ductal carcinoma consistent with metastasis from the left invasive ductal carcinoma. Bilateral mastectomy and right axillary dissection were performed. The histopathological examination and immunohistochemistry showed left breast recurrent 0.5 cm grade III, Triple negative invasive ductal carcinoma. Discussion If a cancer is found in the contralateral axilla, three main potential sources should be considered: contralateral spread from the original breast tumor, metastasis from an occult primary in the ipsilateral breast, and metastasis from an extramammary site. Conclusion Although CAM in patients with breast cancer is an uncommon condition, it is still possible to occur. There is a controversy regarding the appropriate management., Highlights • Lymph node metastasis is the most prominent prognostic factor in breast cancer. • Ipsilateral axillary lymphnode metastasis is the most common site of involvement. • Contralateral axillary lymphnode metastasis is an unusual finding. • In this paper, a case of synchronous contralateral axillary lymph node metastasis has been discussed.

The trend through which academia finances scientific publication has been changed into open access publishing, the latter is exploited by predatory journals and publishers. The aim of this paper is to review the current situation of predatory publishing and introduce Kscien's list of predatory journals and publishers. Kscien has recruited a special committee consisting of 23 young researchers. They are working unceasingly to keep the list refurbished, expose current tricks invented by the predators and guide authors. The list is designed to be updated daily. Currently, the criteria used to recognize predatory journals and publishers basically depend on the journal's misconduct, fabrication and inadequate peer review. Researches are ongoing to recapitulate more solid criteria with objective evidence to overcome the critics faced by Beall. Kscien's list has been proposed to replace the vanished Beall's list from the interior of the drawn region in fake journals and publishers.

Introduction Although the rate and severity of complications after coronavirus 2019 disease (COVID-19) resolution is currently unknown, evidence regarding their presence is increasing in the literature. This study presents a series of cases with post COVID-19 short-term pulmonary complications. Methods This is a single center retrospective case series study. The demographic and clinical data were collected from the center's electronic records. All the included cases were confirmed COVID-19 patients who had pulmonary complications even after their recovery. Results Nineteen COVID-19 patients were involved in this study. Fourteen of them were male (73.7%) and only 5 (26.3%) cases were female, with a mean age of 52.05 years (26–77). All of the patients developed severe COVID-19 and were admitted to intensive care unit (ICU). The average infection duration was 13.5 days (10–21). The most common complaints after recovery from COVID-19 were shortness of breath, fever, and hemoptysis. Computed tomography scan showed different pulmonary abnormalities between the cases. Different surgical procedures were performed for the patients according to their conditions, such as decortications, lobectomy, and bullectomy. More than half of the patients (n = 10) recovered and were discharged from hospital without complications, five patients were admitted to the ICU, 3 cases developed mucormycosis, and one case passed away. Conclusion Following the resolution of COVID-19, patients may experience severe pulmonary complications that may last for months and can affect quality of life, ICU admission, or even death.