Publications by authors named "Surya N Prasad"

We report a rare case of isolated cardiac involvement by hydatid disease in a young female patient, who presented with a recent onset of chest pain and discomfort. The radiological investigations showed an intramyocardial hydatid cyst in the right ventricle-free wall, protruding into the right ventricular cavity. The lesion exhibited characteristic MRI findings of crumpled serpiginous detached membranes within it and delayed peripheral enhancement on dynamic postcontrast late-phase MRIs.

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  • A child was diagnosed and treated for nephrotic syndrome, but later developed symptoms indicative of May-Thurner syndrome as they grew older.
  • Persistent swelling in the left lower leg prompted further investigation after the nephrotic syndrome went into remission.
  • Imaging techniques were crucial in confirming the mechanical compression of the left common iliac vein by an ectopic left kidney, leading to the diagnosis of May-Thurner syndrome.
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  • A baby had a rare condition called Caffey disease that caused swelling in their left thigh after getting vaccinated.
  • Doctors did tests and saw that the baby didn’t have a real tumor, but rather a reaction in the bone.
  • After some treatment, the baby got better and doctors noticed good changes in the bone during follow-up exams.
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  • The study investigates the relationship between the morphological characteristics of gallbladder cancer and the corresponding MDCT enhancement patterns, focusing on patients from India.
  • The research was conducted through cross-sectional analysis at Lady Hardinge Medical College, utilizing MDCT imaging to evaluate patients with gallbladder disorders, particularly analyzing wall thickening and enhancement patterns.
  • Findings indicate that wall thickening in gallbladder cancer is significantly linked to locoregional infiltration, especially with liver and vascular involvement, while hypo-isoenhancement pattern was predominant among imaging results.
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The existence of a previously unrecognized subarachnoid lymphatic-like membrane (SLYM) was reported in a recent study. SLYM is described as an intermediate leptomeningeal layer between the arachnoid and pia mater in mouse and human brains, which divides the subarachnoid space (SAS) into two functional compartments. Being a macroscopic structure, having missed detection in previous studies is surprising.

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  • Primary malignant melanoma in the oral cavity, especially on the tongue, is rare and can be confused with squamous cell carcinoma due to similar features.
  • A 27-year-old male had a painless mass on his tongue for 6 months, which was initially thought to be squamous cell carcinoma; however, biopsy revealed it was primary amelanotic malignant melanoma without evidence of metastasis.
  • Treatment typically involves surgery, which is considered the most effective method; however, due to its aggressive nature and rarity, diagnosing and managing oral amelanotic malignant melanoma presents significant challenges.
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We describe a rare case of dural arteriovenous fistula (dAVF) of the posterior condylar canal in a man in his 30s who presented with recent onset headache and neck pain and subsequently acute intracranial haemorrhage. Radiological workup showed a medulla bridging vein draining dAVF of the right posterior condylar canal supplied by a meningeal branch of the right occipital artery. A dilated venous sac was seen compressing over cerebellar tonsil on the right side.

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Background: The exact reason of nonaneurysmal subarachnoid hemorrhage (SAH) is an enigma. The aim of this study is to identify if type III deep cerebral venous drainage is exclusively prevalent in patients with nonaneurysmal SAH and to enumerate the predictors of poorer outcome in these patients.

Methods: All patients of age >18 years, presented at our centre with spontaneous SAH on noncontrast computed tomography head and were divided into 2 groups, aneurysmal and nonaneurysmal SAH after 4-vessel DSA.

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Background: Scalp arteriovenous malformations (AVMs), or cirsoid aneurysms of the scalp, usually present with troublesome symptoms and cosmetic disfigurement. Endovascular/percutaneous embolization has evolved as a sole treatment method or adjunct to surgical excision in the management of scalp AVMs with an excellent outcome.

Purpose: To discuss minimally invasive techniques for treating scalp AVMs as well as to highlight the role of embolization before surgery.

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Pulmonary arteriovenous malformations (PAVMs) are rare vascular lesions characterised by abnormal connections between the pulmonary artery and vein bypassing the pulmonary capillary bed and causing right-to-left shunt. Paradoxical embolism is known to occur in these cases, leading to inoculation of septic focus in the systemic circulation. We report a case of multiple PAVMs who presented clinically with seizures and altered sensorium.

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Background: Wide-neck intracranial aneurysms need additional devices like balloons or stent for management. Balloon-assisted coiling has evolved both with interventionalist experience and device modifications.

Objective: We discussed our experience, evolution, and complications with this novel technique.

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Aim: The exact cause of bleeding in non-aneurysmal sub-arachnoid hemorrhage (SAH) is yet to be established. The present study intends to evaluate the morphological variants of deep cerebral venous drainage, especially basal veins of Rosenthal (BVR), and to correlate if such a venous anomaly is associated with increased incidence of non-aneurysmal SAH.

Methods: A prospective analysis of all the patients of age more than 12 years with spontaneous non-aneurysmal SAH and undergone 4-vessel DSA for the diagnosis of the source of bleeding was included in the study (n = 59).

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Cobb syndrome is a rare neurocutaneous disorder characterised by spinal and cutaneous vascular malformations in a metameric distribution. Managing such cases is a challenge for the interventionists and neurosurgeons as the results are often suboptimal. We describe a case of Cobb syndrome in a young male child who presented clinically with acute paraparesis and lower backache.

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Spinal epidermoid cysts are rare lesions and epidermoid cyst in intramedullary location is even rarer. Surgical excision is the mainstay of treatment; however, in cases of recurrence, repeat surgery becomes quite difficult. Treatment of recurrent intramedullary epidermoid cyst by surgery alone is a challenge.

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We present two cases of 17-year-old man and 10-year-old boy presenting with subarachnoid haemorrhage and a history of road traffic accident. One patient had dissecting aneurysm of the posterior cerebral artery (PCA), and the other patient had partially thrombosed aneurysm on CT angiography. On digital subtraction angiography of the second patient, there was formation of PCA pontomesencephalic vein pial arteriovenous fistula (PAVF).

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Background: We retrospectively re-evaluated follow-up three-dimensional (3D) time-of-flight (TOF) magnetic resonance angiography (MRA) in patients with aneurysms treated with coiling at our Institute.

Aims: To document the type and frequency of postcoiling residue patterns as seen on follow-up MRA and to document their evolution with time where a further follow-up MRA was available. To assess the implications of the location of the aneurysm on residue and recurrence.

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We report a case of a 60-year-old woman who presented clinically with symptoms of acute embolic stroke. On workup with MRI, carotid Doppler and subsequent CT angiography, a long pedunculated mobile thrombus was seen with the base of the thrombus attached to the ascending aorta and the tip protruding into the left common carotid artery. She was advised urgent cardiovascular surgery consultation; however, she preferred medical management over surgery.

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  • Spinal epidural arteriovenous fistulas (SEAVFs) are rare spinal vascular malformations often misdiagnosed, and this study aims to distinguish them from type 1 spinal dural fistulas while emphasizing effective treatment approaches.
  • The research involved a retrospective review of 11 patients who underwent treatment, confirming SEAVFs through spinal angiography and assessing clinical improvement using the Aminoff-Logue Scale before and after the procedure.
  • Results showed a predominance of male patients with symptoms like paraparesis; treatment led to significant clinical improvement at 3 months, highlighting the necessity of careful angiographic evaluation for optimal access to the fistula.*
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 There is a direct fistulous connection between the cavernous segment of the internal carotid artery and cavernous sinus in cases of direct carotid-cavernous fistula (CCF). Endovascular embolization is the mainstay of management in this condition. This study is about the evolution of endovascular treatment methods and the development of a cost-effective technique for embolization of direct CCF at a tertiary care center.

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Perianal fistulae are commonly seen clinical entity. Development of malignancy within a perianal fistula is rare. Even rarer is the development of mucinous adenocarcinoma in a chronic fistula-in-ano.

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