The ATA risk stratification and continuous reassessment during the first 2 years predicts disease-free survival better than the TNM staging. Age older than 45 years, unresectable disease, and elevated postthyroidectomy thyroglobulin levels dictate a poorer prognosis.

Osseous haemangiomas are benign skeletal tumours, usually identi ed as incidental ndings on different imaging modalities. Bone scan is the most frequent radionuclide procedure performed as metastatic workup in patients with various malignancies. Not every hotspot on a staging bone scan is malignant. Haemangiomas with variable degree of radiotracer uptake on technetium-99m (Tc-99m) bone scintigraphy may be falsely labelled as metastases in background of known malignancy. The addition of single-photon emission computed tomography computed tomography (SPECT-CT) enhances the specificity of bone scan which allows accurate detection and anatomical localisation of scintigraphic findings. We present a case series as pictorial review of osseous haemangiomas identi ed on Tc-99m methylene diphosphonate SPECT CT at our department. Key words: Haemangioma, methylene diphosphonate, bone scan, single-photon emission computed tomography- computed tomography

Scintigraphic analysis of gastric motility uses the rate of gastric emptying by measuring radioactivity remaining in the stomach at pre-defined points in time. It helps to assess unresolved symptoms of functional gastrointestinal disorders such as gastroparesis. Delayed gastric emptying can occur in post-oesophagectomy patients. Squamous cell carcinoma of the esophagus is a common indication for oesophagectomy. In such patients presenting with post-prandial symptoms of bloating, nausea or vomiting, colloid scintigraphy can play a vital role in evaluation of their symptoms. We present an interesting image of a post-oesophagectomy patient with persistent gastric dilatation suspected of delayed gastric emptying Keywords: Gastric emptying, Colloid scan, Esophagectomy, Squamous cell carcinoma

Splenic hamartoma, also known as splenoma, splenic adenoma or nodular hyperplasia, is a rare benign splenic tumor. It is composed of disordered vascular channels with abnormal mixture of red or white splenic pulp. Mostly it is asymptomatic and encountered incidentally at imaging, surgery or autopsy. Radiologically hamartomas are almost identical to hemangioma. In such circumstances radiolabelled blood pool imaging and radiocolloid scintigraphy helps to differentiate the two entities. We present a case of asymptomatic splenic lesion on hybrid radionuclide imaging with SPECT-CT, findings suggestive of hamartoma. Key Words: Splenic hamartoma, SPECT-CT, Radiocolloid scintigraphy

Erdheim-Chester hastalığı (ECD), çoğunlukla BRAF V600E mutasyonu ile ilişkili, nadir, multisistemik ve idiyopatik bir bozukluktur. Tipik olarak farklı belirtileri nedeniyle geç ve zor tanı konulur. Her ne kadar sessiz bir klinik seyri olsa da ileri evrelerde multipl vital organ tutulumu ile fulminan seyir gösterebilir. Karakteristik radyolojik özellikleri olan, sınıf 2a, non-Langerhans hücreli histiyositozlardandır. Tüm vücut görüntüleme, özellikle iskelet lezyonlarını göstermek için, yararlı olabilir. Her ne kadar görüntülemede tipik yaygın iskelet tutulumu tanıyı öne sürse de kesin tanı için histopatolojik doğrulama gereklidir. Hastalık aynı zamanda kraniyal ya da orbital farklı bulgularla da ortaya çıkabilir. Kardiyak tutulum sıktır. Bu yayında ECD'nin PET/BT görüntülerini sunmaktayız.