MRI of the brain mimicking autoimmune encephalitis in Sjögren syndrome with chorea: a case report.

Neurologic manifestations in primary Sjögren syndrome (SS) range in prevalence from 8 to 49%, and most of the studies suggest a prevalence of 20%. The incidence of SS patients developing movement disorders is about 2%. Case presentation: The authors herein report a case of a 40-year-old lady with MRI of the brain mimicking autoimmune encephalitis in SS who presented with chorea. Her MRI findings revealed T2 and FLAIR (fluid-attenuated inversion recovery) high signal intensity areas in bilateral middle cerebellar peduncles, dorsal pons, dorsal midbrain, hypothalami, and medial temporal lobes. Clinical discussion: There is still no evidence to support the definite use of MRI in characterizing the central nervous system involvement in primary SS, especially due to overlapping findings with age and cerebrovascular disease. Multiple areas of increased signal intensity in periventricular and subcortical white matter in FLAIR and T2-weighted image is commonly seen in primary SS patients. Conclusion: It is crucial to consider autoimmune diseases like SS as a cause of chorea in adults, even in those whose imaging findings are suggestive of autoimmune encephalitis.

Wallerian degeneration in the brain after organophosphorus poisoning: a case report.

The type, quantity, and potency of the organophosphorus compound (OPC) taken determine the symptoms of OPC poisoning as well as their severity. The exact etiology for organophosphorus (OP) poisoning delay neuropathy regulating Wallerian degeneration is still unknown. Case Presentation: We report here a rare case of a 25-year-old lady with Wallerian degeneration in the brain found in an MRI in a patient after OPC ingestion. MRI of the brain, in our case, shows Wallerian degeneration of the corona radiata, internal capsule, and midbrain. Clinical Discussion: Some OPCs can lead to OP-induced delayed neuropathy, a form of delayed neurotoxicity in humans (OPIDN). The distal axonopathy's (in OPIDN) morphological pattern resembles Wallerian degeneration, which happens in vitro following nerve damage. Although delayed Wallerian degeneration from organophosphate poisoning often affects the peripheral nervous system, it can also affect the central nervous system. Rehabilitation therapy combined with appropriate nursing care has been demonstrated to improve the disease. Conclusion: Central nervous system involvement after OP poisoning is rare, and MRI of the brain and spinal cord can document evidence of Wallerian degeneration after OP poisoning.

Right breast schwannoma in a male: A rare case report.

INTRODUCTION: Schwannoma are benign neoplasms of peripheral nerve sheath. They usually occur in the head, neck and the extremities. Breast is a rare location of Schwannoma. CASE PRESENTATION: Our case describes the occurrence of Schwannoma in the right breast, in a 60-year-old male, who has had a breast lump since the last 6 years. After ultrasonography (showed 3.4 × 2.3 × 2.0 cm heteroechoic mass in the upper outer quadrant of the right breast), and mammography (showed 2.5 × 3.2 cm sized high density mass in upper outer quadrant of right breast), an excisional biopsy was performed, and on histopathologic examination, the diagnosis of breast schwannoma was confirmed. DISCUSSION: Clinical and pathological features resemble that of other benign tumors. On ultrasonography they present a well-defined, solid, hypoechoic mass, with some degree of posterior acoustic enhancement. Diagnosis is usually based on histopathologic examination. Microscopically, it exhibits hypercellular antony A areas along with hypocellular antony B areas. Treatment is usually surgical excision. CONCLUSION: Though Schwannomas in breast are rare, they must be considered as differential diagnoses in patients presenting with breast lumps.

Hepatic mass caused by Fasciola hepatica: A case report.

INTRODUCTION: Fascioliasis is a zoonotic infestation which presents with a wide spectrum of clinical pictures. However, it may often be overlooked, especially in the acute phase, because of uncertain symptoms. Fasciola hepatica can have an initial presentation similar to malignant liver mass or complex hepatic cyst. Here, we report a case of a hepatic mass caused by fasciola hepatica. CASE PRESENTATION: A 48-year-old woman came with chief complaints of epigastric and right hypochondrial discomfort associated with nausea and vomiting. Ultrasonography (USG) showed a heterochronic lesion in the segment VIII of the liver with few cystic lesions. CECT abdomen and pelvic gave impression of ill-defined irregular hypodense lesions in the right lobe of the liver with progressive enhancing peripheral and central cystic areas suggestive parasitic liver infestation likely echinococcus alveolaris. Right hepatectomy was done and the patient was discharged without any complications. DISCUSSION: Fascioliasis is uncommon in developed countries but more commonly seen in developing countries. The identification of fasciola hepatica eggs in the stool is a standard method for the diagnosis of fascioliasis. Fascioliasis may cause a wide variety of clinical signs ranging from asymptomatic infection to severe liver cirrhosis. Surgery for complex hydatid cysts of the liver is potentially burdened by serious complications. Technique of choice for surgical management remains inconclusive. CONCLUSION: Fasciola hepatica infection can mimic a malignant liver mass or a complex hepatic cyst because of its uncertain presentation. The disease can be prevented with public education and environmental precautions.

Bilateral ovarian mucinous carcinoma (stage III) with omental involvement and incidental hydronephrosis: A rare case report.

INTRODUCTION: Though ovarian malignancies are common, mucinous ovarian carcinomas of high grade are rare. They usually occur in a young female under 40 years of age. Here, we present a case of mucinous ovarian carcinoma (stage III), with omental involvement and incidental hydronephrosis in a 67-year-old female patient. CASE PRESENTATION: A 67-year-old female patient presented to us with a history of lower abdominal pain for 2 months and per-vaginal discharge for the last 6 days. On deep palpation of the abdomen, a nodular mass occupying the suprapubic region was found. Bimanual palpation revealed a mass on the right and left adnexa. After visualization of septate cystic mass bilaterally on CECT, she was planned for staging laparotomy with bilateral salpingo-oophorectomy (BSO) with infra-colic omentectomy with peritoneal cytology. Incidentally, a horseshoe-shaped kidney with right mild hydronephrosis was found. After surgery and histopathologic examination, mucinous ovarian carcinoma (stage III), with omental involvement was confirmed. DISCUSSION: Mucinous ovarian carcinomas are rare malignancies, with different natural history, molecular profile, and prognosis as compared to other epithelial tumors of the ovary. These carcinomas can be either primary or secondary (those metastasized to the ovary from elsewhere), and this differentiation is essential. The therapeutic approach to the patients depends upon the stage at which these carcinomas are diagnosed. CONCLUSION: Mucinous ovarian carcinomas are rare and have unique features among the epithelial ovarian carcinomas. Appreciation of these features will surely make a positive impact in improving the management and thus the prognosis of these carcinomas.

Right-sided paraduodenal hernia with malrotation - A case report.

INTRODUCTION: Paraduodenal hernia is a rare cause of internal hernia. It is the herniation of small bowel through a peritoneal sac in the duodenum. It occurs due to incomplete rotation and fixation abnormalities of the primitive midgut during fetal development. We report a case of right sided paraduodenal hernia in an adult male. CASE PRESENTATION: This is a case of 36-year-old gentleman who presented with complaints of abdominal fullness and upper abdominal pain for 1.5 months and 7 to 8 episodes of vomiting. CT scan of abdomen gave an impression of right-sided paraduodenal hernia. Exploratory laparotomy with hernia repair was performed and patient was discharged without complications. DISCUSSION: Right sided paraduodenal hernia is the protrusion of viscera through the fossa of Waldeyer. It is frequently associated with malrotation and strangulation. Its diagnosis is frequently delayed. Symptoms are non-specific and may need laparotomy for diagnosis. Technique of choice for surgical management remains inconclusive. CONCLUSION: Paraduodenal hernias are frequently diagnosed late or incidentally because of vague symptoms. They are rarer and carry higher lifetime risk of strangulation and bowel obstruction. Surgical management is necessary after diagnosis.

Myopericytoma in right inguinal region: A rare case report from Nepal.

INTRODUCTION: Myopericytoma is a rare mesenchymal soft tissue tumor that originates from perivascular myoid cells and mostly benign in nature. With a slight male predisposition, it occurs more commonly in the lower extremities with an insidious and painless presentation. Contrary to the usual, our patient was with a rare presentation in the inguinal region with a dull aching pain. CASE PRESENTATION: We herein report a case of a 64-year-old female patient with myopericytoma, the first of its kind reported in Nepal, present in the right inguinal region and surgically removed. The mass was single with dull aching pain, non-tender, globular, smooth, mobile, covered with skin and, had been slowly growing for 1 year and had started bleeding for 4 days. On complete surgical excision and subsequent biopsy, a nodule with thin-walled blood vessels and spindle-shaped cells having indistinct cell border, eosinophilic cytoplasm, and oval to spindle-shaped nucleus was observed, features consistent with those of myopericytoma. DISCUSSION: Myopericytoma can occur in different sites in the body. Its differential diagnoses in the inguinal region include inguinal hernia, lipoma, or an inguinal lymphangioma. Histopathological analysis and immunohistochemistry (IHC) staining are used for diagnosis and confirmation. CONCLUSION: Myopericytomas are rare and have a substantial propensity to be misdiagnosed as other soft tissue tumors such as sarcomas due to significant overlap in their presentation and histological features. Complete surgical excision of mass is the curative therapy.