Biomedical subjects

Michele Maroon

Publications and source records attributed to Michele Maroon.

4 recordsLinked to original sources

PubMed2005

Soft tissue perineurioma of the finger: expanding the differential diagnosis of a soft tissue tumor presenting on a digit.

Peripheral nerves are surrounded by an external sheath, which contains concentric layers of thin perineurial cells. Perineuriomas are rare nerve sheath tumors composed of well-differentiated perineurial cells that have a distinct ultrastructural and immunochemical phenotype. We review the histologic characteristics and staining patterns, reported variants, and salient features that differentiate this entity from other soft tissue tumors that may present on a digit. Because of the nonspecific clinical appearance and varying histology on hematoxylin-eosin stain, perineuriomas are likely to be confused with more common tumors of the hand and, therefore, should be included in the differential diagnosis of a soft tissue tumor presenting on a digit.

Adolescent↗

PubMed2003

Persistent cellulitis in a patient receiving renal dialysis.

Cryptococcus neoformans, an opportunistic fungus, may cause cutaneous disease by dissemination from primary lung infection or, more rarely, by direct cutaneous inoculation. Cellulitis in an immunocompromised host who does not respond to conventional antibacterial therapy should alert the physician to consider other diagnoses, including cryptococcal skin infection.

Adult↗

PubMed2002

Familial partial lipodystrophy.

The lipodystrophies are rare disorders characterized by insulin resistance and the absence or loss of body fat. The 4 subtypes of lipodystrophy are characterized by onset and distribution. Partial lipodystrophy is rare, with loss of fat from the extremities and excess fat accumulation in the face and neck; recognizing this phenotype and subsequent referral for endocrinologic care may improve outcome and reduce mortality.

Acanthosis Nigricans↗

PubMedDate not supplied

Mycobacterium haemophilum in an immunosuppressed child.

Mycobacterium haemophilum is an emerging cutaneous and systemic pathogen in immunosuppressed adults. Reports in the pediatric literature prior to 2004, limited to immunocompetent children with lymphadenitis, offer a different clinical presentation from that of the immunosuppressed adult. We report an instance of this atypical mycobacterial infection occurring in an immunosuppressed boy with clinical findings similar to those described in immunosuppressed adults.

Adolescent↗