The role of 18 F-FDG-PET/CT in the management of differentiated thyroid cancer.

INTRODUCTION: In previous literature, 18 F-FDG-PET/ CT imaging significantly impacted differentiated thyroid cancer (DTC) therapy. Low thyroglobulin (Tg) levels and negative Iodine-131 (131I) whole-body scan (WBS), along with negative 18 F-FDG-PET/ CT, suggested a lesser likelihood of active illness. Positive 18 F-FDG-PET/CT findings, however, were associated with a variety of signs of local recurrence and regional or distant metastases in patients with suspected WBS. We aim to evaluate the utility of 18 F-FDG-PET/CT in managing DTC patients with negative 131I post-therapy WBS and elevated Tg. MATERIAL AND METHODS: We retrospectively reviewed 55 patients with DTC (76% papillary and 24% follicular). Patients underwent total thyroidectomy or several radioactive iodine (RAI) treatments or both. WBS was performed 5-7 days after RAI treatment. Inclusion criteria were elevated serum Tg, negative anti-Tg auto-antibodies (AbTg) during long-term follow-up, presence of 18F-FDG-PET/CT images, and negative or suspicious WBS. RESULTS: 54% of 18 F-FDG-PET/CTs detected at least one lesion, mainly, cervical lymph nodes (49.9%), mediastinal lymph nodes (40.4%), local recurrence (34%), and bone or tissue metastasis (36.2%). The three major sites of metastasis were lung, bone, and liver. 18 F-FDG-PET/CT identified recurrence or metastasis in 45% of patients with high serum Tg and negative WBS, modifying therapeutic management in half the patients for suitable treatment modality (surgery vs. tyrosine kinase inhibitor). CONCLUSION: The findings redemonstrate that elevated Tg with negative or suspicious WBS necessitates 18 F-FDG-PET/CT for localization of recurrence. 18 F-FDG-PET/CT is useful in managing locally recurrent or metastatic DTC with high Tg levels. It influences treatment and accurately assesses disease severity.

Extra-Gastrointestinal Stromal Tumor (EGIST) in the Pelvis Mimicking Retroperitoneal Sarcoma.

Extra-gastrointestinal stromal tumors (EGISTs) are rare mesenchymal tumors accounting for less than 1% of total gastrointestinal tumors. They tend to be aggressive and have a poor prognosis. Unfortunately, there is a lack of data or controversial data due to its scarcity. Therefore, we report a case of pelvic EGIST misdiagnosed as retroperitoneal sarcoma. We opted for surgical management followed by adjuvant oral chemotherapy with imatinib.

Splenoptosis in young female, case report.

BACKGROUND: Splenoptosis is an uncommon disorder defined as the dislodgment of the spleen from its anatomical location in the left hypochondrium to another location in the intraabdominal cavity. This migration is the result of laxity or absence of the ligaments that fix the spleen to surrounding structures. Splenoptosis is either diagnosed after it causes symptoms, or incidentally using different imaging modalities. Surgery is the definite treatment either by splenopexy or splenectomy. CASE PRESENTATION: In the case presented here, we discuss a 17 years old female patient who presented to our institution for acute onset of abdominal pain, mainly suprapubic, occurring for 4 days. Ultrasound showed a suspicious right pelvic mass, which was found to be a wandering spleen with pedicle torsion. The patient was treated surgically by splenectomy. CONCLUSION: We report this rare case to encourage physicians to keep this etiology in mind as part of the differential diagnosis of unspecific abdominal pain.

Recurrent giant retroperitoneal liposarcoma with 10 years follow up. Case report and review of literature.

INTRODUCTION: This case is of a patient with a recurrent giant retroperitoneal liposarcoma, followed-up and operated multiple times over 10 years. We report this case because of its rarity and review all previous articles reporting "Giant Retroperitoneal Liposarcoma" in the English literature. CASE DESCRIPTION: A 70 years old man presented to our clinic for dizziness and fatigue. He was incidentally found to have a large retroperitoneal mass filling all the length of the abdominal cavity and shifting all intraabdominal viscera and kidney to the left side. En bloc excision of a 50 × 30 × 18 cm, 9 kg tumor was performed. Final pathology revealed a well-differentiated liposarcoma. Five years later, the patient was reoperated for recurrence and a well-differentiated liposarcoma was excised in 2 pieces (the biggest measuring 14 × 11 × 7 cm) along with the appendix. Four years later the patient was operated on again for a second recurrence, and again a well-differentiated liposarcoma (16 × 10 × 7 cm) extending into the right inguinal canal was excised. One year thereafter, the patient was diagnosed with a third recurrence (22 × 12 cm). DISCUSSION: Retroperitoneal Liposarcomas are rare tumors, presenting with different histological differentiation. They are diagnosed using multiple imaging modality, mainly CT scan, and it is confirmed by percutaneous large core needle biopsy. R0 Surgical excision remains the proper treatment for non-metastatic tumors, which may necessicate multiorgan resection. They rarely grow to reach a large size and be labled as "Giant Retroperitoneal Liposarcoma".

Rare presentation of community acquired pneumonia resulted in laparoscopic intervention in adult. Case Report.

INTRODUCTION: Community acquired pneumonia usually presents with typical clinical and radiological signs allowing for a quick diagnosis. Nevertheless, pneumonia can infrequently mimic acute abdominal pathologies, leading to invasive unnecessary procedures. PRESENTATION OF CASE: We report a case of a 44-year-old man, previously healthy, admitted with a diagnosis of a surgical abdomen, investigated with an exploratory laparoscopy after inconclusive imaging and failure of improvement. Clinical evolution revealed the diagnosis of pneumonia. DISCUSSION: Community acquired pneumonia is a frequently encountered condition. While its clinical presentation is usually related to the respiratory system, extrapulmonary manifestations, including abdominal pain in the pediatric population, are well documented. However, solely severe acute abdominal pain, being as the major presentation, without respiratory symptoms or radiological signs is very rarely reported. CONCLUSION: Community acquired pneumonia can sometimes be a challenging diagnosis. Acute abdominal pain mimicking a surgical abdomen is an infrequent presentation but can confuse physicians when no radiological or clinical signs of pneumonia are present.

A caustic ingestion consequence mistaken for gastric cancer: A case report.

INTRODUCTION: This report is a case of a suicide attempt by bleach ingestion. mistaken for gastric cancer after oral contrast studies and esophagogastroduodenoscopy. We report this case to encourage physicians to take this etiology into consideration as part of differential diagnosis especially in front of a secretive patient. PRESENTATION OF CASE: We report a case of a 38-year-old lady admitted for an acute onset of symptoms leading to a diagnosis of antral stenosis. Further workup which included endoscopic and surgical biopsies failed to reveal an underlying malignancy. After 24 days of inconclusive inpatient investigations, and due to failure of conservative treatment, distal gastrectomy was performed. Final pathology also revealed an absence of any signs of malignancy, and reported only inflammatory changes. One month after discharge, the patient confessed that she had attempted suicide by ingestion of corrosive agents before the symptoms started and wanted to keep the incident as a secret. DISCUSSION: Gastric stenosis is seldom encountered in adult patients, however, it can occasionally result secondary to gastric ulcer disease, malignancies, foreign body ingestion, certain drugs or chemicals, or after endoscopic or surgical interventions. These etiologies do not usually cause acute gastric obstruction, and usually follow a more indolent course. Identification of an underlying etiology is mandatory to determine the proper medical or surgical treatment to relieve the obstructive symptoms. CONCLUSION: We report this bizarre case to encourage physicians to keep this etiology in mind in otherwise unexplained gastric stenosis.

Adult patient living 32 years with postduodenal remnant small bowel of only 35 cm in jejunocolic anastomosis type II weaned off parenteral nutrition. A case report.

INTRODUCTION: The small bowel is an essential organ for maintaining adequate nutrition. Decrease in length could be associated with malnutrition and may require that the patient receives parenteral nutritional support. We report a case of a 59-year-old man who survived32 years with a short bowel of 35 cm length without any parenteral nutrition. CASE PRESENTATION: A 59-year-old gentleman, with a history of hypercoagulable state, presented for severe abdominal pain and obstipation of one day's duration. Upon presentation, the patient was hemodynamically unstable, with abdominal guarding and tenderness upon physical examination. Laboratory studies showed metabolic acidosis with leukocytosis and electrolyte disturbances, and an abdominal CT scan showed thickening of the sigmoid and multiple air-fluid levels. The patient was operated urgently for suspicion of mesenteric ischemia, however, he was found intraoperatively to have a very short dilated small bowel with jejunotransverse anastomosis. DISCUSSION: The necessity for surgical resection of the small bowel can arise for a sum of reasons. However, the removal of a big amount of small bowel may not be adaptive and appropriate digestion will no more be possible. In the aftermath of the resection, patients require parenteral nutrition for a certain period after which they may switch to enteral and oral nutrition, and subsequently intestinal adaptation by thickening and growth of the remaining intestinal villi. CONCLUSION: Patients with a short bowel, particularly those surgically removed, can survive even with a very short remaining bowel length, as a result of intestinal adaptation, nutrition enhancement, and elimination of parenteral nutrition.

A giant mesenteric fibromatosis adherent to the appendix and colonic wall, case report.

BACKGROUND: Mesenteric fibromatosis, is a rare neoplasm arising usually from the bowel mesentery, with intermediate behavior and local invasion potential. They can be sporadic or related to multiple factors contributions. They usually presents as an asymptomatic growth of intraabdominal mass, and can reach a large diameter before symptoms appearance. Surgical excision is the definitive treatment when achievable. CASE PRESENTATION: In this case we present a case of 34 years old gentleman, presenting for painless abdominal distension, and found to have a giant mesenteric fibromatosis of 23 cm diameter and 4.5 kg arising from the appendix and colonic mesentery. Treated surgically, and was free of recurrence after 1 year follow up. CONCLUSION: We report this rare case to encourage physicians to keep this etiology in mind as part of the differential diagnosis of unspecific abdominal mass.

A Rare Case of a Ruptured Metastatic Hepatic Lesion from a Jejunal Gastrointestinal Stromal Tumor (GIST) Treated by Arterial Embolization.

BACKGROUND Gastrointestinal stromal tumors (GISTs) are rare gastrointestinal neoplasms. The spontaneous rupture of a jejunal GIST is very rare and spontaneous rupture of liver metastasis from an intestinal GIST is even rarer with only a few cases reported in the literature. CASE REPORT In this article, we reported a case of spontaneous rupture of a liver metastasis from a malignant jejunal GIST that presented with active tumoral bleeding, hypovolemic shock, and hemoperitoneum. The patient was successfully treated with arterial embolization of the tumor. CONCLUSIONS In appropriately selected patients, arterial embolization appears to be an effective safe treatment for a GIST metastasis rupture.

The role of 68Ga-DOTA-NOC PET/CT in evaluating neuroendocrine tumors: real-world experience from two large neuroendocrine tumor centers.

OBJECTIVE: Our aim was to assess the role of Ga-DOTA-NOC PET/CT as a tool for the management of neuroendocrine tumors (NETs), evaluating the clinical impact on patients from two large NET centers in different geopolitical settings. PATIENTS AND METHODS: This is a retrospective study of patients with NETs who underwent Ga-DOTA-NOC PET/CT at Royal Liverpool University Hospital (UK) and at Mount Lebanon Hospital (Lebanon). Indications for imaging and findings of the PET/CT along with demographic and clinical outcome data were recorded and evaluated. RESULTS: Four hundred and forty-five patients fulfilled the inclusion criteria, with a median age at the time of diagnosis of 56 (range: 3-90) years; 248 (55.7%) patients were male.Ga-DOTA-NOC PET/CT was indicated for staging in 193 (43.4%) patients, for diagnosis in 124 (27.9%) patients, for follow-up in 97 (21.7%) patients, and for identification of a primary NET site in 31 (7%) patients.One hundred and four (27.9%) patients underwent Ga-DOTA-NOC PET/CT for the primary diagnosis of NET, of whom 66 (52.7%) patients presented with a clinical suspicion of NET, 10 (8.3%) patients presented with a biochemical suspicion of NET only, and 48 (38.8%) patients presented with a suspicious NET lesion discovered on another imaging modality. The most common clinical presentation was typical carcinoid syndrome [4 (33%) patients].Results on the basis of histology were used as the gold standard for the diagnosis in 57% of patients and the remaining on the basis of follow-up as per established clinical consensus. Sensitivity, specificity, negative-predictive value, and positive-predictive value of PET/CT were 87.1, 97.7, 79.6, and 98.7%, respectively, for the entire sample. Accuracy was measured using the receiver operating characteristic curve analysis with an area under the curve of 0.924 (95% confidence interval: 0.874-0.974). CONCLUSION: Ga-DOTA-NOC PET/CT is a highly sensitive and specific study for the diagnosis and follow-up of patients with neuroendocrine tumors. These results support the use of Ga-DOTA-NOC PET/CT contributing significantly toward the clinical management of NET patients.