Tag Archives: USMLE Review

Holoprosencephaly Malformation

Autopsy of an infant who died on his second day of life reveals fuse cerebral hemispheres. The midline forebrain fissure is completely absent. Other abnormalities include the presence of a single ventricle, fused basal ganglia, and absent olfactory nerves. This … Continue reading

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Cherry Hemangiomas (Angiomas)

The small, vascular bright-red, papular lesions shown on the image are called cherry hemangiomas and are the most common being vascular tumors in adults. Cherry hemangiomas appear during the most common benign vascular tumors in adults. Cherry hemangiomas appear during … Continue reading

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Long Thoracic Nerve Injury

A 24-year-old male complains of clumsiness of his right arm. The patient is asked a wall and push against it with both hands. Abnormal prominence of the right inferior scapular angle is observed during the maneuver. What muscle/muscles is most … Continue reading

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Obturator Nerve Injury

The obturator¬† nerve is the only nerve that exits the pelvis via the obturator foramen. This nerve innervates the adductor compartment of the thigh after dividing into anterior and posterior branches subsequent to leaving the pelvis. The anterior branch innervates … Continue reading

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Prepattelar Bursitis (Housemaid knee)

The prepatellar bursa located between the patella and the overlying skin and prepatellar tendon. It is lined by synovium and contains very little fluid. Its function is to diminish friction and ensure maximal range of motion at the knee. Chronic … Continue reading

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Chorionic Villi

A 29-year-old woman (gravida 3, para 2) gave birth to a healthy baby after 38 weeks of gestation and delivered the intact placenta spontaneously. The pregnancy was complicated by preeclampsia, but fetal monitoring and ultra-sound were normal throughout gestation. The … Continue reading

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External Branch of Superior Laryngeal Nerve Injury

A 54-year-old female undergoes thyroidectomy for several thyroid nodules that were suspicious for malignancy on fine needle aspiration. while ligating the superior thyroid artery, the surgeon accidentally serves a nearby nerve. Which muscle/muscles is denervated as a result of this … Continue reading

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