Epidermal cyst protruding from the occipital region of the scalp: a case report

Introduction and importance

Epidermal cysts are the most common subcutaneous tumor typically observed on the scalp, face, neck, back, or trunk. Epidermal cysts conventionally range in size from 1 to 5 cm, with sizes greater than 5 cm rarely reported.

Case presentation

Here, we present a case of a 58-year-old female housewife who presented to our surgery outpatient department (OPD) with a history of a mass in the left occipital region. The mass was first noticed 3 years back and was small and associated with mild itching. The mass progressively increased in size over the course of 3 years. Her present complaint was a painful mass associated with itching, headache, and pus discharge when compressed. The pain was relieved by taking medication.

Clinical discussion

The epidermal cyst was confirmed on biopsy, and subsequent excision of the cyst was done under general anesthesia; the occipital bone was eroded by the inferior part of the cyst - reconstruction of scalp defect done by rotational scalp flap.

Conclusion

Epidermal cysts, being a slow-growing benign tumor, can pose diagnostic difficulties, especially when located in the scalp area. In addition to that, when cranial bones and intracranial structures are affected by the cyst, they can even lead to complications and interventional difficulties.

Median nerve schwannoma with a diagnostic delay of 8 years: a case report

Introduction

Schwannomas are benign tumors of the peripheral nerve sheath, and the median nerve is the most commonly involved nerve. These benign tumors of the peripheral nerve sheath are very rare; they are clinically and radiologically similar to most other benign swellings of the hand; thus, they are often misdiagnosed.

Case Presentation

A 41-year-old lady presented with an 8-year-long history of swelling over the distal forearm. The tumor measured 3.5×3.5×3.5 mm and was located over the flexor aspect of the distal part of her right forearm. Schwannoma was suspected from the clinical presentation and imaging, but the final diagnosis was established only after the surgery and histopathological analysis. At the follow-up after 1 year, the patient is doing well and her symptoms have not recurred.

Conclusion

Imaging characteristics of schwannoma can be misinterpreted as some other condition, making the preoperative diagnosis very difficult and important. Thus, clinicians should be aware of such swellings, especially those that have been unnoticed or misdiagnosed, and provide optimal diagnoses to confer good outcomes.

Rare case of multiple neurofibromas of the scalp and trunk in association with intradural extramedullary spinal tumor: a case report

Neurofibromas are tumors of neural connective tissue composed of Schwann cells and fibroblasts. They can occur anywhere in the body, primarily as a solitary mass or as a component of neurofibromatosis. Only 1/4 of the intradural extramedullary spinal tumors are neurofibromas. While most of the neurofibromas are asymptomatic, the authors report a patient with symptomatic multiple neurofibromas of the scalp and trunk that lacked the salient features of neurofibromatosis-1.

Case presentation

A 63-year-old male from Saptari, Nepal, with multiple insidious swellings in the scalp and trunk region, presented with complaints of weakness of the bilateral lower limb for 6-7 years resulting in difficulties in walking and bleeding from the most significant swelling that was in the occipital area.

Clinical findings and investigations

Masses were present all over the scalp, averaging about 4×4 cm, with active bleeding from the two swellings. The authors performed the neurological assessment and histopathological and radiological investigations.

Interventions and outcomes

A confirmed diagnosis of neurofibroma was made with myelography revealing an intradural extramedullary spinal tumor. A laminectomy with total excision of the tumor was performed.

Relevance and impact

Meningiomas and nerve sheath tumors (schwannomas and neurofibromas) can both develop in the intradural extramedullary spinal compartment. Contrast-enhanced MRI is the most sensitive and specific imaging modality to evaluate possible spinal column lesions. Surgical excision, partial or complete, is the hallmark treatment of neurofibroma.

Arthroscopic Debridement for Mucoid Degeneration of Anterior Cruciate Ligament - A Single Institution Experience from Nepal

Background Mucoid degeneration of anterior cruciate ligament is characterized by infiltration of mucoid-like material scattered throughout the anterior cruciate ligament substance. It is an uncommon condition, but previously, underdiagnosed or often misdiagnosed as an anterior cruciate ligament tear. Objective To present our early experiences with mucoid degeneration of anterior cruciate ligament in last five years in terms of clinical presentation and the outcomes of arthroscopic management. Method This was a retrospective descriptive cross-sectional study on patient who received arthroscopic debridement for mucoid degeneration of anterior cruciate ligament in Dhulikhel Hospital over five years period (2017 May to 2022 April). Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) scale that has been translated and validated to be used in local (Nepali) language and context was used for evaluation of outcome evaluation. Result Twenty-one patients of mean age 44.21 years, predominantly females (18), were managed in five years period. The mean Western Ontario and McMaster Universities Osteoarthritis Index score was 16.33±10.47 with a range of 0 to 36 (11.57 to 21.09 at 95% confidence interval). The mean Western Ontario and McMaster Universities Osteoarthritis Index score converted on a scale of 0 to 100 was 17. Thirteen patients had isolated Mucoid degeneration of anterior cruciate ligament whereas nine others had associated either meniscal tear or chondral lesions. Conclusion Mucoid degeneration of anterior cruciate ligament could be a cause of knee pain in middle-aged patients and arthroscopic debridement can improve the patient's symptoms and provide a good functional outcome.

Large posterior mediastinal ganglioneuroma with intradural cervical spine extension: A rare case report and review of literature

Introduction

Ganglioneuroma (GN) is a rare benign tumor of ganglion cell origin and can occur anywhere along the sympathetic chain. These tumors can grow to a significant size without any symptoms unless they exert a mass effect on the region they grow and start showing symptoms. Spinal extensions are rare and they may produce neurological symptoms warranting further investigation.

Case presentation

We described a case of posterior mediastinal ganglioneuroma in a 4-year-old boy with cervical extension who presented with quadriparesis. The radiological scan revealed large ganglioneuroma having an intradural extramedullary extension with a large posterior mediastinal component compressing and displacing the surrounding structures. He underwent consecutive surgeries for complete excision of the tumor following which he regained his power in his upper and lower limbs over the period of 2 months.

Conclusion

Para spinal mass with consistent radiological features suggests ganglioneuroma but confirmation should be done with biopsy. Complete excision of the tumor is the treatment of choice with close follow-up for clinical improvement and recurrence.

Giant occipital encephalocele complicated with obstructive hydrocephalus: A case report

Introduction

and importance: An encephalocele is a type of congenital neural tube defect defined by herniation of intracranial contents via a cranial defect. When an encephalocele is greater than the size of the head, it is referred to as a "giant encephalocele." The occurrence of encephalocele has been documented to be 1–4 instances per 10,000 live births. Surgery is challenging.

Case presentation

A 1-month-old baby boy sustained a huge swelling on the back of his head since birth, and it increased gradually over time. On examination, he had a huge occipital swelling measuring about 20 × 15 × 17 cm in size. A diagnosis of giant occipital encephalocele was established. Surgical excision and repair was done. After 1 month, he developed obstructive hydrocephalus and a ventriculo-periotoneal shunting was performed. On regular follow-up, he is in a good state of health.

Discussion

Surgery imposes challenges for the anaesthesiologists and neurosurgeons due to its complex site, enormous size, intraoperative blood loss, and prolonged anaesthesia. A team approach is necessary for its successful treatment.

Conclusions

Based on our experience, we would like to deliver following recommendations in the surgical management of giant encephalocele. Surgery should be done quickly to ensure good prognosis. Proper positioning, efficient intubation, infections and sepsis control should be emphasized. Also, fortification of food with folic acid, as well as increased education and awareness of women on the need for antenatal care may also decrease the risk of this disease.

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An encephalocele is a type of congenital neural tube defect.

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Surgery imposes challenges for the anaesthesiologists and neurosurgeons.

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A team approach is necessary for its successful treatment.

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Proper positioning, efficient intubation, infections and sepsis control should be emphasized.

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Fortification of food with folic acid may also decrease the risk of this disease.

Von Hippel-Lindau disease: A case report

INTRODUCTION AND IMPORTANCE

Von Hippel-Lindau (VHL) disease is a rare autosomal dominantly inherited genetic condition. Von Hippel characterized the illness independently in 1911, and Lindau in 1926. Its prevalence is estimated to be about 1 in every 36,000 live births. VHL is characterized by the production of several benign and malignant tumors, as well as cysts in other organs. For proper prognosis, good clinical judgement and timely diagnosis is warranted.

CASE PRESENTATION

Herein, we report a case of a 50-year-old man with several central nervous system (CNS) lesions, retinal lesions, and renal cortical cysts with a diagnosis of VHL disease who was surgically treated. At a 3-month follow-up, he improved drastically with a marked alleviation of his signs and symptoms.

DISCUSSION

VHL is characterized by the creation of various benign and malignant tumors, as well as cysts in multiple organs, and is passed down through generations in an autosomal dominant pattern with near-complete penetrance. CNS lesions are surgically treated. Regular follow-up should be ensured.

CONCLUSIONS

VHL disease is an extremely complicated disease with the need for diagnosis and genetic tests in the patient and family members, as well as intensive supervision of carriers of the mutated gene, thereby improving early diagnosis and successful treatment of the malignancies. The high cost of diagnostics and surgical therapies is a severe issue. Government care and financial assistance are critical considerations.

Giant sacrococcygeal teratoma in a neonate: illustrative case

BACKGROUND

Sacrococcygeal teratomas (SCTs) are tumors that emerge in the sacrococcygeal area and contain tissue from all three germ layers. SCT affects about 1 in every 35,000–40,000 live births, with malignant transformation becoming more common as the patient gets older. Ultrasound helps in prenatal diagnosis. Surgical resection is the mainstay of treatment.

OBSERVATIONS

A couple gave birth to a neonate with a small mass over his sacral region that progressively increased in size. Diagnostic magnetic resonance imaging was performed, and a diagnosis of giant SCT was established. Complete resection with flap reconstruction was performed. In regular follow-up, he is in a good state of health.

LESSONS

One of the most common tumors in infancy, SCT should be carefully diagnosed. SCT is often confused with neural tube defects such as myelocystocele or myelomeningocele. Complete resection with appropriate reconstruction can ensure better treatment, and close follow-up until adulthood is recommended to keep a close view on its possible recurrence and to improve prognosis. Postoperative complications such as infection, bleeding, and urethral complications should be carefully watched.

Improvement of Ejection Fraction in Patients undergoing Coronary Artery Bypass Grafting with Impaired Left Ventricular Function

Background Myocardial revascularization surgery has shown better long term survival expectancy compared to medical therapy in patient with impaired left ventricular function. Objective To evaluate the change in ejection fraction after 90 days in patients who underwent coronary artery bypass surgery and had preoperative left ventricular ejection fraction of less than and equal to 45% in a single cardiac center of Nepal over the period of 2 years. Method Out of 82 eligible patients during 2 years, 3 patients expired in immediate postoperatively and 24 patients had loss of 90 days' follow up. So, they were excluded from the study. Total 55 patients were taken for the study for whom statistical analysis was done to compare preoperative ejection fraction with post-operative 90 days' ejection fraction. Result Single vessel disease was present in 2(3.6%) patients, double vessel disease in 7(12.7%) patients and triple vessel disease in 46(83.6%) of the patients. In 2(3.6%) patients 2 grafts, in 18(32.7%) patients 3 grafts, in 33(60%) patients 4 grafts and in 2(3.6%) patients 5 grafts were placed for revascularization. The mean left ventricular EF in preoperative patients was 37.12±5.69% which improved to 45.80±10.00% in postoperative follow up at 90 days which was statistically significant (p=0.000). Conclusion Surgical revascularization of myocardium in preoperatively impaired left ventricular function patients helps improve left ventricular ejection fraction postoperatively. So we suggest surgical revascularization in patient with low ejection fraction for improvement of myocardial function. Hence improve survival rate in these patients.

Multi-drug Resistant and Extended Spectrum β-lactamase Producing Salmonella Species Isolated from Fresh Chicken Liver Samples

Background Ductus arteriosus is a vascular structure which connects the roof of main pulmonary artery near the origin of the left branch pulmonary artery to the proximal descending aorta. Patent ductus arteriosus (PDA) closure is indicated for any patient who is symptomatic from left to right shunting. Objective To investigate the hospital outcomes of surgical closure of patent ductus arteriosus over last 19 years starting from the very first case of our center. Method This is a retrospective analysis of all patent ductus arteriosus treated surgically from August 2001 to July 2019. Patients who underwent isolated surgical closure of patent ductus arteriosus were included. Data have been presented in three different eras (Era 1: 2001-2007, Era 2: 2008-2013, and Era 3: 2014-2019) to see the trend of evolution of this surgery. Result A total of 901 patients aged 8.67±8.76 years under went patent ductus arteriosus surgical closure over last 19 years. Patients in the initial era 2001-2007 were significantly older compared with other 2 eras (p=0.000). Males accounted for 35.5% of all cases. Twenty percent had severe pulmonary artery hypertension.Duration of mechanical ventilation was 3.57±9.64 hours with ICU stay of 1.55±1.53 days, and hospital stay of 3.9±2.3 days. Overall in hospital mortality was 0.8%; for isolated patent ductus arteriosus diagnosis, mortality was 0.2%. Chylothorax was noted in 0.4%. Conclusion This is the first report to analyze surgical outcomes of patent ductus arteriosus ligation in our center. We have discussed the evolution of patent ductus arteriosus surgery in our center, and have shown favorable outcomes in terms of morbidity and mortality.

New Description of Evolution of Magnetic Phases in Artificial Honeycomb Lattice

Artificial magnetic honeycomb lattice provides a two-dimensional archetypal system to explore novel phenomena of geometrically frustrated magnets. According to theoretical reports, an artificial magnetic honeycomb lattice is expected to exhibit several phase transitions to unique magnetic states as a function of reducing temperature. Experimental investigations of permalloy artificial honeycomb lattice of connected ultra-small elements, [Formula: see text] 12 nm, reveal a more complicated behavior. First, upon cooling the sample to intermediate temperature, [Formula: see text] 175 K, the system manifests a non-unique state where the long range order co-exists with short-range magnetic charge order and weak spin ice state. Second, at much lower temperature, [Formula: see text] 6 K, the long-range spin solid state exhibits a re-entrant behavior. Both observations are in direct contrast to the present understanding of this system. New theoretical approaches are needed to develop a comprehensive formulation of this two dimensional magnet.