scholarly journals Thoracic Mass Lesions on Imaging: Beware of Tuberculosis Cases

2021 ◽  
Vol 31 (12) ◽  
pp. 1509-1510
Keyword(s):  
Mass Lesions

The Ultrastructure of Lymphocytic Hypophysitis

1981 ◽  
Vol 39 ◽  
pp. 466-467
Author(s):  
S.L. Asa ◽  
K. Kovacs ◽  
J. M. Bilbao ◽  
R. G. Josse ◽  
K. Kreines
Keyword(s):  
Electron Microscopy ◽  
Plasma Cells ◽  
Secretory Granules ◽  
Sella Turcica ◽  
Uranyl Acetate ◽  
Lymphocytic Hypophysitis ◽  
Pituitary Cells ◽  
Transmission Electron ◽  
Ultrathin Sections ◽  
Mass Lesions

Seven cases of lymphocytic hypophysitis in women have been reported previously in association with various degrees of hypopituitarism. We report two pregnant patients who presented with mass lesions of the sella turcica, clinically mimicking pituitary adenoma. However, pathologic examination revealed extensive infiltration of the anterior pituitary by lymphocytes and plasma cells with destruction of the gland. To our knowledge, the ultrastructural features of lymphocytic hypophysitis have not been studied so far.For transmission electron microscopy, tissue from surgical specimens was fixed in glutaraldehyde, postfixed in OsO4, dehydrated and embedded in epoxy-resin. Ultrathin sections were stained with uranyl acetate and lead citrate and examined with a Philips 300 electron microscope.Electron microscopy revealed adenohypophysial cells of all types exhibiting varying degrees of injury. In the areas of most dense inflammatory cell infiltration pituitary cells contained large lysosomal bodies fusing with secretory granules (Fig. 1), as well as increased numbers of swollen mitochondria, indicating oncocytic transformation (Fig. 2).

Ultrasonographic and Endoscopic Ultrasonographic Angiography in Pancreatic Mass Lesions

1995 ◽  
Vol 36 (4) ◽  
pp. 381-387 ◽  
Author(s):  
Tadeshi Kato ◽  
Yoshihisa Tsukamoto ◽  
Yasuo Naitoh ◽  
Yoshiki Hirooka ◽  
Tsuyoshi Furukawa ◽  
...  
Keyword(s):  
Pancreatic Mass ◽  
Mass Lesions

A family with pheochromocytoma-paraganglioma inherited tumour syndrome

2016 ◽  
Vol 55 (01) ◽  
pp. 34-40 ◽  
Author(s):  
P. Zschieschang ◽  
V. Prasad ◽  
D. Moskopp ◽  
B. Knie ◽  
M. Plotkin
Keyword(s):  
Early Detection ◽  
Neck Region ◽  
Hereditary Disease ◽  
Head And Neck Region ◽  
Pet Ct ◽  
Highly Sensitive ◽  
Hereditary Pheochromocytoma ◽  
Genetically Determined ◽  
Mass Lesions ◽  
Pet Ct Scan

SummaryAim: Hereditary pheochromocytoma-paraganglioma syndromes are characterized by multiple pheochromocytomas (PCC) and paragangliomas (PGLs), inherited in an autosomal dominant manner. Early detection and removal of tumours may prevent or minimize complications related to mass effects and malignant transformation. Having confirmed the diagnosis, it is important to localize the tumours and reveal their extent preoperatively. This study aimed to introduce 18F-DOPA PET/CT as a highly sensitive noninvasive diagnostic tool for early detection of mass lesions in patients with pheochromocytoma-paraganglioma inherited tumour syndrome and to report about its impact on patient management. Patients, methods: We are currently supervising one of the largest documented families in Germany with genetically determined SDHD gene mutation. We performed 18F-DOPA PET/CT in order to detect tumours in asymptomatic gene carriers and enable subsequent surgical therapy. Results: In seven patients undergoing 12 18F-DOPA PET/CT scans 17 lesions have been detected. Three of these lesions, located in the head and neck region, have had no morphologic correlate in CT and one had also no morphologic correlate in MRI. Of the six histologically analyzed lesions five have been tumors (PGL or PCC) and one has been a nodular hyperplasia. This means the 18F-DOPA PET/CT scan in our study group had a sensitivity of 83%. 18F-DOPA PET/CT investigations lead to change in the management in 5/7 studied patients (70%). Conclusion: The benefits of PET/ CT in detection of pheochromocytoma and paraganglioma are well documented, but we are the first to use this technique for screening of a rare hereditary disease (estimated prevalence 0.3/100 000).

scholarly journals Symptomatic Heterotopic Gastric Mucosa in Distal Esophagus

2021 ◽  
Author(s):  
Avnish Kumar Seth ◽  
Mahesh Kumar Gupta ◽  
Gursimran Kaur ◽  
Priti Jain ◽  
Rinkesh Kumar Bansal
Keyword(s):  
Gastric Mucosa ◽  
Squamous Epithelium ◽  
Narrow Band Imaging ◽  
Distal Esophagus ◽  
Heterotopic Gastric Mucosa ◽  
Retrosternal Pain ◽  
Gastric Type ◽  
History Of ◽  
Mass Lesions

Abstract Introduction Heterotopic gastric mucosa (HGM) in esophagus is commonly noted as an inlet patch at endoscopy. We describe a rare patient with symptomatic distal esophageal HGM. Case Report A 40-year-old male presented with retrosternal pain and marked odynophagia for the last 4 weeks without any history of ingestion of antibiotics, foreign body, or corrosive. Endoscopy showed abrupt circumferential transition to salmon pink mucosa at 35 cm from incisors. From 35 to 41 cm, there were areas of polypoid edematous thickening with few superficial ulcers of 1 to 3 mm. Squamous epithelium was visualized at narrow band imaging from 41 cm to the Z-line at 43 cm with no hiatus hernia. Biopsy showed gastric-type mucosa with parietal cells without dysplasia. Serology for cytomegalovirus and human immunodeficiency virus was negative. He was managed with proton pump inhibitors (PPIs) and prokinetics and improved symptomatically. Follow-up endoscopy at 3 months demonstrated healing of ulcers with persistence of HGM and pseudopolyps. He remains well on maintenance with PPI at 1-year follow-up. Conclusion Symptomatic HGM in distal esophagus is rare and can be differentiated from Barrett’s esophagus histologically and by presence of squamous epithelium between HGM and stomach. Inflammatory mass lesions may develop and mimic esophageal malignancy. Symptoms are largely due to acid production and usually respond to PPI.

scholarly journals Computerized Tomography-Guided Core-Needle Biopsy of Orbital Space-Occupying Lesions: A Case Series

2020 ◽  
pp. 1-8
Author(s):  
Bashar M. Bata ◽  
Andrew Martin ◽  
Daniel Connolly ◽  
Hardeep Singh Mudhar ◽  
Naomi Hersey ◽  
...  
Keyword(s):  
Computerized Tomography ◽  
Neuroendocrine Tumour ◽  
Case Series ◽  
B Cell Lymphoma ◽  
Major Surgery ◽  
Open Biopsy ◽  
Core Needle ◽  
Peribulbar Block ◽  
Orbital Space ◽  
Mass Lesions

<b><i>Purpose:</i></b> To describe our experience in performing biopsy of post-septal orbital masses with core needle under computerized tomography guidance (CT-CNB). <b><i>Methods:</i></b> The medical records of all patients who underwent this procedure were reviewed. The procedure was performed under local anesthesia on a day case basis under a peribulbar block. A planning non-contrast computerized tomography (CT) scan of the orbits was performed to localise the mass. A 6-cm 18-G Temno Evolution® semi-automated biopsy needle was inserted through the skin into the orbit. Prior to further advancement of the needle, a low-dose CT limited to the previously determined plane was performed to confirm its position. The needle was then advanced, and the cutting needle was deployed to obtain the biopsy. <b><i>Results:</i></b> Five patients who underwent CT-CNB were identified. The CNB was successful in 4 patients and revealed a metastatic prostate adenocarcinoma, diffuse large B-cell lymphoma, a metastatic neuroendocrine tumour, and orbital inflammatory disease. The biopsy failed in the fifth patient when the needle failed to penetrate the tumour despite good localisation on CT. He was eventually diagnosed with fibrous meningioma of the greater wing of sphenoid on open biopsy. None of the patients had any complications other than peri-ocular bruising which was present in all of them. <b><i>Conclusion:</i></b> CT-CNB of mass lesions located in the lateral aspect of the orbit can be an alternative to open biopsy in selected cases. It avoids major surgery and allows the use of radiotherapy, if required, without any delay.

scholarly journals Non-malignant conjunctival epithelial masses with ocular surface squamous neoplasia-like optical coherence tomography features

2021 ◽  
Author(s):  
Ágnes Füst ◽  
Jeannette Tóth ◽  
László Imre ◽  
Zoltán Zsolt Nagy
Keyword(s):  
Optical Coherence Tomography ◽  
Ocular Surface ◽  
Anterior Segment ◽  
Histological Diagnosis ◽  
Optical Coherence ◽  
Ocular Surface Squamous Neoplasia ◽  
Ocular Coherence Tomography ◽  
Maximal Thickness ◽  
Epithelial Lesions ◽  
Mass Lesions

Abstract Purpose To observe and describe the anterior segment optical coherence tomography features of limbally localised non-malignant epithelial mass lesions Methods Thirteen patients (age: 66.9 ± 16.3 years) with conjunctival mass suggesting ocular surface squamous neoplasia with biomicroscopic examination were imaged using anterior segment ocular coherence tomography (anterior segment optical coherence tomography)/Cirrus HD-OCT, Model 4000, Carl Zeiss Meditec, Inc., Dublin, CA, and Spectralis HRA + OCT system, Heidelberg Engineering, Vista, CA/. Cases with ocular surface squamous neoplasia-like anterior segment optical coherence tomography (hyperreflective, thickened epithelium and an abrupt transition from normal to abnormal) were included in the study. Maximal thickness of the epithelium was measured. Histological diagnosis was gained from an excisional or incisional biopsy or impression cytology specimens. Results In six patients (age: 68.5 ± 15.4 years) with ocular surface squamous neoplasia-like anterior segment optical coherence tomography features, the histological diagnosis was other than ocular surface squamous neoplasia (papilloma, parakeratosis and a keratotic plaque with mild dysplasia), and ocular surface squamous neoplasia in seven cases (age: 65.6 ± 18.0 years). The maximal epithelial thickness was between 250 and 859 µm in non-ocular surface squamous neoplasia cases and between 252 and 596 µm in ocular surface squamous neoplasia cases. Conclusion Non-malignant epithelial lesions can mimic ocular surface squamous neoplasia on anterior segment optical coherence tomography.

Aspiration Biopsy in Renal Angiomyolipoma

1989 ◽  
Vol 30 (4) ◽  
pp. 381-382 ◽  
Author(s):  
M. Taavitsainen ◽  
L. Krogerus ◽  
S. Rannikko
Keyword(s):  
Computed Tomography ◽  
Renal Mass ◽  
Aspiration Biopsy ◽  
Renal Angiomyolipoma ◽  
Ultrasound Guided ◽  
Open Biopsy ◽  
Safe Method ◽  
Imaging Results ◽  
Mass Lesions

Ultrasound guided aspiration biopsy of renal mass lesions was performed in 56 patients in whom renal cell carcinoma could not be excluded due to equivocal imaging results. Cytology showed non-malignant mesenchymal cells consistent with angiomyolipoma in 12 patients. In 5 of these patients the diagnosis was ensured by open biopsy. No nephrectomy was performed. In 6 of the 7 patients not operated upon the tumours remained unchanged with no evidence of malignancy during a 3–36 months' follow-up period. Aspiration biopsy is an easy and safe method for diagnosing renal angiomyolipoma in cases where computed tomography is not diagnostic for this disease.

Stereotactic biopsy of brainstem mass lesions

1995 ◽  
Vol 43 (6) ◽  
pp. 563-568 ◽  
Author(s):  
John Steck ◽  
William A. Friedman
Keyword(s):  
Stereotactic Biopsy ◽  
Mass Lesions
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