sodium-pertechnetate-tc-99m and Mediastinal-Cyst

A 3-year-old boy presented with intermittent abdominal pain, melena, and anemia since 2 months. Upper gastrointestinal endoscopy did not reveal any significant abnormality. The child was then referred for Tc-pertechnetate scan to rule out the presence of ectopic functioning gastric mucosa. Tc-pertechnetate scan revealed abnormal tracer accumulation in the thoracic region, which persisted in the delayed images, suspicious for being ectopic gastric mucosa. Subsequently, ultrasound and contrast-enhanced CT (CECT) scans of the chest revealed a large multiseptate cystic lesion in the retrocardiac region, corresponding to the site of increased tracer uptake on Tc-pertechnetate scan.

Topics: Child, Preschool; Humans; Male; Mediastinal Cyst; Positron-Emission Tomography; Radiopharmaceuticals; Sodium Pertechnetate Tc 99m; Ultrasonography

We present a Tc pertechnetate scintigraphy performed in a 64-year-old woman to investigate a mediastinal cystic mass in search of residual gastric mucosa after gastrectomy. She had a history of esophagectomy and gastric pull-up for esophageal cancer. Postoperative leakage necessitated ablation of the gastric pull-up and reconstruction using part of the colon. Oral realimentation resulted in mediastinal pain and brownish discharge within the trachea, raising the suspicion of residual gastric pouch. SPECT/CT demonstrated increased tracer uptake in the median part of the mediastinal cyst, and a biopsy confirmed the presence gastric mucosa.

Topics: Esophageal Neoplasms; Esophagectomy; Female; Gastric Mucosa; Humans; Mediastinal Cyst; Middle Aged; Multimodal Imaging; Radiopharmaceuticals; Sodium Pertechnetate Tc 99m; Tomography, Emission-Computed, Single-Photon; Tomography, X-Ray Computed

To investigate the diagnosis and therapy of mediastinal enterogenous cysts in children.. Clinical data of 17 cases with mediastinal enterogenous cysts within 19 years in our hospital were retrospectively analyzed.. One case was intramural esophageal cyst and 16 cases were enteric cysts, two among which were complicated with abdominal enteric duplications. Most cases presented with symptoms of respiratory distress. Twelve cases were complicated with vertebral anomalies. Ultrasound of 12 cases and magnetic resonance imaging of 4 cases were helpful in confirming the cystic nature of these lesions. Eight cases had technetium-99m pertechnetate scintigraphy of posterior mediastinum.. Most patients present with symptoms of respiratory distress, complicated with vertebral anomalies. Ultrasonography and magnetic resonance imaging may be helpful in confirming the cystic nature of these lesions. Technetium-99m pertechnetate scintigraphy is the most effective method for differentiation of the disease from other mediastinal cysts.

Topics: Diagnosis, Differential; Female; Follow-Up Studies; Humans; Infant; Infant, Newborn; Magnetic Resonance Imaging; Male; Mediastinal Cyst; Retrospective Studies; Sodium Pertechnetate Tc 99m; Ultrasonography

Neurenteric cysts are rare congenital anomalies which present as mediastinal tumors associated with vertebra anomalies. Two-thirds of them are lined with gastric mucosa and are potentially life threatening. An exact differential diagnosis is difficult preoperatively but is absolutely necessary because of the grave prognosis if left untreated. We present a case in which [99mTc]pertechnetate sequential scintigraphy demonstrated gastric mucosa in the cyst and helped to confirm the diagnosis. The scintigraphic findings are correlated with radiologic, sonographic, and pathologic features.

Topics: Female; Humans; Infant; Mediastinal Cyst; Radionuclide Imaging; Sodium Pertechnetate Tc 99m