BACKGROUND: Suprasellar masses commonly include craniopharyngiomas and pituitary adenomas. Suprasellar glioblastoma is exceedingly rare with only a few prior case reports in the literature. Suprasellar glioblastoma can mimic craniopharyngioma or other more common suprasellar etiologies preoperatively.
METHODS: A 65-year-old male with no significant history presented to the emergency department with a subacute decline in mental status. Work-up revealed a large suprasellar mass with extension to the right inferior medial frontal lobe and right lateral ventricle, associated with significant vasogenic edema. The patient underwent an interhemispheric transcallosal approach subtotal resection of the interventricular portion of the mass. Pathological analysis revealed glioblastoma, MGMT partially methylated, with a BRAF V600E mutation.
CONCLUSIONS: Malignant glioblastomas can mimic benign suprasellar masses and should remain on the differential for a diverse set of brain masses with a broad range of radiological and clinical features. For complex cases accessible from the ventricle where the pituitary complex cannot be confidently preserved via a transsphenoidal approach, an interhemispheric approach is also a practical initial surgical option. In addition to providing diagnostic value, molecular profiling may also reveal therapeutically significant gene alterations such as BRAF mutations.

UNASSIGNED: In patients with appropriate epidemiological risk factors, neurocysticecosis should be considered as part of the differential diagnosis of suprasellar or parasellar mass lesions. As neuroimaging findings can be nonspecific, serology may be helpful, but when still in doubt, brain biopsy, and histopathology may be necessary to make the correct diagnosis.
UNASSIGNED: Neurocysticercosis (NCC) is a well-documented central nervous system helminth infection that is, frequently observed in developing countries. Known sites of NCC infection include the highly vascular gray-white matter junction, basal cistern, brain parenchyma, subarachnoid space, ventricular system, and spinal cord. This case highlights an uncommon yet intriguing site of NCC infection within the suprasellar area, which presented with similar clinical and imaging characteristics as suprasellar masses or lesions. The 44-year-old female initially complained of headaches and nausea that persisted for 5 years and progressed to vision problems and short-term memory loss. A craniopharyngioma was initially suspected, based on imaging findings of a partially calcified suprasellar tumor. However, cysticercosis was confirmed by histopathology and serological testing positive for Cysticercus IgG antibodies. The patient was successfully treated with albendazole and tapering doses of steroids, which improved her presenting symptoms and resolved prior imaging findings. This case serves as a reminder to consider NCC in the differential diagnosis of sellar and suprasellar masses or lesions, particularly when an epidemiologic risk factor is present.

Eosinophilic angiocentric fibrosis (EAF) is a rare progressive fibrosing lesion involving the nasal cavity, paranasal sinuses, and the upper respiratory tract. There are few reports that it rarely involves the orbit; however, there is no report of intracranial involvement. Here, we report and share our experience with a rare case of primary intracranial EAF. A 33-year-old woman with a history of a suprasellar mass and unsuccessful surgical and medical treatment referred to us. Physical examination demonstrated right-sided blindness and ptosis, left-sided decreased visual acuity, and visual field defect. The brain imaging revealed an extra-axial intradural well-defined large suprasellar mass with parasellar (more on the right side) and retrosellar extension. Via pterional craniotomy and subfrontal approach, a very firm creamy-brownish well-defined fibrotic mass was encountered. The tumour texture was too firm to be totally resected. The microscope exited the surgical field off, and the tumour was incompletely resected using a rongeur. The histopathology finding favoured EAF. Further histopathology evaluation failed to show histologic features of IgG4-related disease. Although the preoperative diagnosis of EAF is impossible, in the setting of an indolent slow-growing lesion demonstrating hypointensity on the T2 image sequence of MRI (magnetic resonance imaging), EAF should be considered a differential diagnosis. In the setting of this diagnosis, the systemic and other organ involvement for a diagnosis of IgG4-RD should be evaluated. However, more cases are needed to illustrate the relation between these two entities.

Erdheim-Chester disease (ECD) is a rare systemic disease characterized by non-Langerhans histiocytosis. Pituitary involvement, often manifesting as diabetes insipidus, is the most common central nervous system (CNS) lesion. However, significant mass formation compressing the optic apparatus is rarely reported. We present a case of ECD-related suprasellar mass treated with an endoscopic transnasal approach, with emphasis on the surgical strategy and the intraoperative findings. The mass was fibrous, significantly hard, and strongly adhered to the optic nerves, causing visual impairment. A subtotal resection was performed with preserving the adhesion between the mass and the optic nerves, and her visual symptoms improved remarkably after surgery. We highlight the surgical procedure of ECD-related suprasellar mass, from an endoscopic point of view. Due to strong adhesion of the mass to the surrounding optic apparatus and perforators, complete resection may be harmful; judicious mass reduction with preserving such adhesion would contribute to better visual outcomes.

Myxedema coma and pituitary apoplexy are well-known life-threatening endocrine emergencies. The coincidence of these entities is exceedingly rare. Myxedema coma occurring as a result of pituitary lesion is a much less seen entity. A high index of suspicion is often required for early diagnosis as it is of particular importance in improving survival outcomes. We present a rare case of a patient with myxedema coma presenting as bradycardia and hypotension secondary to pituitary apoplexy, which was confirmed on magnetic resonance imaging (MRI). The patient was managed conservatively with levothyroxine and stress doses of steroid, with the resolution of hemodynamic changes and a decrease in the size of the suprasellar mass.

UNASSIGNED: Primary hypophysitis refers to the isolated inflammation of the pituitary gland not associated with other secondary causes. Among its histopathologic subtypes, xanthomatous is the rarest.
UNASSIGNED: We describe a 22-year-old woman with xanthomatous hypophysitis (XH), its clinical progression over 8 years as well as the treatment effects of prednisolone and azathioprine. Our patient was first referred for severe short stature and delayed puberty at the age of 14 years.
UNASSIGNED: Investigations revealed multiple pituitary deficiencies. Magnetic resonance imaging showed a pituitary mass whereby a partial resection was performed. A full resection was not feasible due to the location of the mass. The histopathologic analysis of the tissue was consistent with XH. The results of secondary workout for neoplasm, infection, autoimmune, and inflammatory disorders were negative. After surgery, a progressive enlargement of the mass was observed. Two courses of prednisolone were administered with a significant reduction in the mass size. Azathioprine was added due to the unsustained effects of prednisolone when tapered off and the concern of steroid toxicity with continued use. No further increase in the mass size was noted after 6 months on azathioprine.
UNASSIGNED: Glucocorticoid and immunotherapy are treatment options for XH; however, more cases are needed to better understand its pathogenesis and clinical progression.

Pituitary macroadenomas are the most common suprasellar lesions in adults and are typically managed surgically through transsphenoidal resection when symptomatic. Due to their close proximity to the optic chiasm, pituitary macroadenomas often present with signs of bitemporal hemianopsia. Alternatively, these tumors can cause mass effect, thus presenting with signs of elevated intracranial pressure or can present with signs and symptoms of endocrine dysfunction. Here, we discuss a 55-year-old male diagnosed with a non-functioning pituitary macroadenoma (NFPA) based on cranial imaging, ophthalmologic exam, and endocrine evaluation. Following diagnosis, the patient was scheduled for transsphenoidal hypophysectomy. On magnetic resonance imaging (MRI) done three and half months later for surgical planning, the tumor had almost completely regressed and only residual pituitary tissue was noted. We describe the presentation and clinical course of the patient, summarize chief differential diagnoses, and discuss potential managements of these conditions.