We report a case of an urachal hamartoma in a 30-year-old African American woman. The urachal lesion was excised with a robotic-assisted laparoscopic partial cystectomy. Pathologic analysis revealed cysts, smooth muscle, and ciliated epithelium consistent with a hamartoma. The patient recovered without complication. This case highlights an unusual pathology that is infrequently reported followi...

Rhabdomyomatous mesenchymal hamartoma is a rare congenital lesion which consists of randomly arranged striated muscle fibers interspersed with mesenchymal elements. We describe the clinical and histopathological features of a rhabdomyomatous mesenchymal hamartoma in a one year-old patient presenting a bilobulated lesion in the mid-cervical line. No associated congenital malformations were obser...

We report a case of pancreatic hamartoma-like solitary fibrous tumor which was differentiated from pancreatic hamartoma with the detection of NAB2-STAT6 fusion, a specific mutation for solitary fibrous tumors. A pancreatic well-demarcated solid nodule, 21 × 17 mm, of 82-year-old man was surgically enucleated. Microscopic findings were close to a pancreatic hamartoma that consisted of sparsely d...

In pulmonary pathology the term "hamartoma " is most commonly applied to a group of tumours in adults which usually contain cartilage as a constituent and arise from connective tissue (Sutherland, Aylwin, and Brewin, 1953). Willis (1958) does not think such growths are named correctly and gives good reasons for regarding them as acquired mixed tumours. On the other hand the mass replacing the e...

BACKGROUND Splenic hamartoma is a rare benign vascular proliferative lesion composed of unorganized sinusoid-like channels lined with plump or flat endothelial cells and characterized by a CD8-positive immunophenotype of the lining cells. Scattered bizarre stromal cells can be found in some splenic hamartomas. The presence of splenic hamartoma with bizarre stromal cells is extremely rare and th...

Breast hamartomas are rare, benign, tumor-like nodules composed of glandular, adipose and fibrous tissue. The hamartoma was first described in 1971 as a lipofibroadenoma, fibroadenolipoma or adenolipoma, based on the predominant component of the breast tissue. Clinical findings resemble fibroadenoma and if there is a palpable mass, the patients may receive an immediate diagnosis. Ductal hyperpl...

Eccrine angiomatous hamartoma is a rare hamartomatous lesion characterized by proliferation of eccrine glands and small blood vessels, and occasionally other elements. It generally arises congenitally or later in childhood, as solitary or multiple lesions on the distal extremities. Adult-onset multiple lesions are very rare. Herein we describe a 33-year-old male with symptomatic multiple eccrin...

An endobronchial hamartoma of the right lower lobe was discovered in a 60 yr old female patient. She had been diagnosed and treated for chronic intractable bronchial asthma for more than 10 yrs. The endobronchial hamartoma was successfully removed with a rigid bronchoscope.

Hypothalamic hamartoma is a rare congenital lesion. We present the case of a 7-year-old girl who suffered from precocious puberty, the cause of which was diagnosed by using MR imaging and CT as pedunculated hypothalamic hamartoma associated with a large craniopharyngeal canal and sellar spine mimicking pituitary duplication.