Heterotopic ossification refers to formation of lamellar bone in soft tissues. The etiology is diverse and includes genetic, post-traumatic, and metabolic causes. Elicitation of bone morphogenic proteins are thought to play a key role in the pathogenic process. Initially, heterotopic ossification presents a clinical and radiographic challenge in that it can be mistaken for other more worrisome ...

Heterotopic gastric mucosa in the upper esophagus is frequently found during endoscopic examination. Although most patients with heterotopic gastric mucosa of the upper esophagus, referred as inlet patch, are asymptomatic, symptomatic patients with complications resulting from this ectopic mucosa have also been reported. Acid secretion by the inlet patch has been suggested in some reports. We r...

Heterotopic pancreas is a rare condition and its diagnosis is often difficult. Traditionally the condition is treated by open surgery. We report two young women with symptomatic heterotopic pancreas located in the prepyloric region. In the first patient, upper gastrointestinal endoscopy identified a round sessile lesion with a central umbilication of the mucosa without bleeding and in the secon...

Heterotopic Pregnancy (HP) is the simultaneous development of an intra-uterine pregnancy and ectopic pregnancy. In natural cycle, it is a very rare event. With the increasing popularity of ovulation induction performed during assisted reproductive techniques, its incidence has significantly increased. However, diagnosis is often delayed because of its rarity and difficulty. Heterotopic pregnanc...

Heterotopic bone formation is a very rare event in the gastrointestinal tract including in the appendix. Here we report three cases of heterotopic ossification in appendiceal mucinous neoplasms, one occurring in an appendiceal mucinous cystadenoma, another in a low-grade appendiceal mucinous neoplasm, and the third occurring in an appendiceal mucinous adenocarcinoma. The clinicopathologic chara...

Heterotopic salivary-gland tissue Fistula in the lower neck Congenital abnormality Abstract Heterotopic islands of salivary-gland tissue are rare and have been described in a number of sites in the head and neck. We describe a patient with salivary-gland fistulas in the lower third of the neck, without evidence of any other congenital abnormalities. The appearance of sinuses in association with...

Heterotopic mesenteric ossification is extremely rare. Here, we report a case of heterotopic mesenteric ossification in a 60-year-old man who underwent a Hartmann procedure with ileostomy for treatment of diverticulitis spanning the descending and sigmoid colon about 2 months ago. Imaging studies of the abdomen, including roentgenography, ultrasound, and computed tomography (CT) revealed diffus...

Heterotopic ossification is a known complication of traumatic injuries. To minimize iatrogenic complications during excision, an understanding of anatomic relationships is essential. Current imaging modalities, such as computed tomography and plain radiographs, are limited to providing a 2-dimensional representation of a 3-dimensional problem. This study describes the benefits of 3-dimensional ...

A 48 years old man presented with subacute intestinal obstruction resulting from an intraluminal colorectal mass. He underwent partial colectomy. Histological diagnosis of mucinous adenocarcinoma with focal areas of heterotopic ossification was made. Although the presence of heterotopic ossification has no known prognostic implication in colorectal carcinoma, however, it is important that both ...

Heterotopic pancreas tissue in the gallbladder is a rare benign condition with no clinical relevance and found incidentally in most cases. Only 28 cases of heterotopic pancreas are reported until 2007 in the worldwide literature. The preoperative diagnosis is very hard, so that it could be considered in differential diagnosis with other benign and malignant disease of gallbladder and biliary tr...