Adenoid cystic carcinoma of the submandibular gland, locoregional recurrence, and a solitary liver metastasis more than 30 years since primary diagnosis.

Adenoid cystic carcinoma (ACC) is a relatively rare tumour of the salivary glands, accounting for approximately 5%-10% of all salivary gland tumours. An important feature of ACCs is the long clinical course with a high rate of distant metastases. The preferential sites of metastases are the lung and bone, followed by the brain and liver. Most liver metastases are derived from nonparotid ACCs, and the presentation is often related to local recurrence or metastases to other organs. Solitary metastases to the liver are rare and optimal management is unknown. We present the case of a metastatic ACC to the liver with primary disease presentation at a young age. We discuss our management and other potential treatment modalities.

Spontaneous Regression of a Carcinoid Tumor following Pregnancy.

We present a case of spontaneous regression of a neuroendocrine tumor following pregnancy in the absence of chemotherapy, radiotherapy, or alternative medicine (including herbal medicine). The diagnosis of a nonsecretory carcinoid tumor was confirmed using CT imaging, octreotide scan, and histology. Furthermore, serial imaging has demonstrated spontaneous regression of the carcinoid suggesting that pregnancy did not worsen the course of the disease but instead may have contributed to tumour regression. We discuss mechanisms underlying tumour regression and the possible effect of pregnancy on these processes.

The case of the forgotten toothbrush.

INTRODUCTION: Although foreign body ingestion is relatively common, toothbrush swallowing is rare. A diagnosis of small-bowel perforation, caused by a sharp or pointed foreign body, is rarely made preoperatively because the clinical symptoms are usually nonspecific and can mimic other surgical conditions, such as appendicitis and diverticulitis. PRESENTATION OF CASE: We report a case of a swallowed toothbrush which passed past the pylorus and perforated the terminal ileum. The patient however presented with a fluctuant mass in the left iliac fossa, pyrexia and generalised tenderness mimicking a diverticular abscess. DISCUSSION: Ingestion of a foreign body is commonly encountered in the clinic among children, adults with intellectual impairment, psychiatric illness or alcoholism, and dental prosthetic-wearing elderly subjects. However, toothbrush swallowing is rare, with only approximately 40 reported cases. CONCLUSION: Bowel perforation by foreign bodies can mimic acute appendicitis and should be considered in differential diagnoses. Clinically, patients often do not recall ingesting the foreign body, which makes the clinical diagnosis more challenging, and a correct diagnosis is frequently delayed. Several radiological investigations, such as small-bowel series, ultrasonography, and computed tomography scans, may lead to the correct diagnosis, but in most patients, the diagnosis is not confirmed until the surgical intervention has been performed.

Soluble E-cadherin: an early marker of severity in acute pancreatitis.

BACKGROUND/AIMS: At present, there is no simple test for predicting severity in acute pancreatitis. We investigated the use of an assay of soluble E-cadherin (sE-cadherin). METHODS: Concentrations of sE-cadherin, from 19 patients with mild acute pancreatitis, 7 patients with severe acute pancreatitis, 11 patients with other acute gastrointestinal pathologies, and 12 healthy subjects were measured using a commercially available sandwich ELISA kit based on two monoclonal antibodies specific to the extracellular fragment of human E-cadherin. Measurements were made at 12 hours or less from onset of pain and also at 24 and 48 hours after onset of pain. RESULTS: Mean (standard deviation) concentration of sE-cadherin in patients with severe acute pancreatitis at <12 hours was 17780 ng/mL (7853), significantly higher than that of healthy volunteers 5180 ng/mL (1350), P = .0039, patients with other gastrointestinal pathologies 7358 ng/mL (6655), P = .0073, and also significantly higher than that of patients with mild pancreatitis, 7332 ng/mL (2843), P = .0019. DISCUSSION: Serum sE-cadherin could be an early (within 12 hours) objective marker of severity in acute pancreatitis. This molecule warrants further investigation in the form of a large multicentre trial.

Rapid onset intratubular calcification following renal transplantation requiring urgent parathyroidectomy.

BACKGROUND: Secondary hyperparathyroidism is a common complication of end-stage renal disease often requiring parathyroidectomy. Renal transplant with the restoration of normal renal function often allows resolution of hyperparathyroidism, avoiding the need for parathyroid surgery. However, a proportion of patients with hyperparathyroidism become overtly hypercalcemic after renal transplantation which poses management dilemmas between medical and surgical treatment. CASE: We present the case of a 48-yearold man with end-stage renal failure known to have secondary hyperparathyroidism who received a living related renal transplant. Postoperatively he developed prompt hypercalcemia, polyuria, polydipsia and rapid onset intratubular calcification, leading to acute tubular necrosis diagnosed on renal biopsy on Day 7 post transplantation. He underwent surgical parathyroidectomy with resolution of his hypercalcemia and improved renal transplant function. DISCUSSION: This case emphasizes the need for good management of secondary hyperparathyroidism together with close surveillance of PTH in patients awaiting renal transplantation. With good renal transplant function hyperparathyroidism usually resolves. Posttransplant surgical parathyroidectomy should be reserved for severe progressive end organ damage.