Magnetic Resonance Imaging of Partial Segmental Priapism (Segmental Thrombosis of Corpus Cavernosum)

A case of unprovoked segmental proximal partial thrombosis of the corpus cavernosum

Partial thrombosis of the corpus cavernosum is an extremely rare and likely underdiagnosed urologic condition. We discuss a case of a 25-year-old male who presented with severe perineal pain and was diagnosed with idiopathic proximal partial thrombosis of the corpus cavernosum via ultrasound and MRI. The patient experienced symptom resolution with evidence of disease regression on follow up MRI after treatment with direct oral anticoagulation. Further studies are needed to fully delineate the pathophysiology of this condition to facilitate development of standardized diagnostic and treatment algorithms.

[Partial thrombosis of the corpus cavernosum: A new case with good outcomes under non-steroidal anti-inflammatory drugs]

Partial priapism is a rare pathology with less than 60 cases published in the literature; the etiology remains unknown, although certain favorable factors are identified as having in relation a prolonged perineal compression or a thrombopathy. The symptomatology is characterized by the appearance of pain, perineal edema and an induration of the root of the penis, which do not concern the distal part of the penis or the glans. MRI is the best complementary examination. The first-line surgical treatment is abandoned. Medical treatment with non-steroidal anti-inflammatory drugs or low molecular weight heparins combined with platelet aggregation inhibitors give good results with complete resolution of symptoms in 82% of cases; first-line medical treatment should be favored. We report a case of idiopathic partial priapism, successfully treated with non-steroidal anti-inflammatory without recurrence after 10 years.

Idiopathic Partial Thrombosis (IPT) of the Corpus Cavernosum: A Hypothesis-Generating Case Series and Review of the Literature

INTRODUCTION

Idiopathic partial thrombosis (IPT) of the corpus cavernosum is a rare condition. The etiology is not fully understood; however, the presence of an either or not congenital web in these patients may contribute to the development of IPT.

AIM

The aim of this study was to describe 18 new IPT cases and compare these with 38 cases found in the literature.

METHODS

A multicenter retrospective analysis was performed. Descriptive statistics are given.

MAIN OUTCOME MEASURES

The main outcome measures used were clinical presentation, clinical and radiographical diagnostics, treatment and resolution of symptoms.

RESULTS

Patients most frequently presented with perineal swelling (10/18; 56%) and pain (13/18; 72%), unilateral (12/18; 67%) or bilateral (4/18; 22%), and pain during erection (10/18; 72%). Penile curvature, dysuria or fever (each 1/18; 6%) were uncommon presenting symptoms. In our series, magnetic resonance imaging demonstrated a fibrous web in the corpus cavernosum in 100% of cases and was more bilaterally (11/18; 61%) than unilaterally (7/18; 39%) diagnosed. Cycling was found to be a provocative factor for IPT occurrence in patients at risk as 61% (11/18) of patients reported being a frequent cyclist with the episode of IPT occurring immediately after or during cycling activity in 8 out of 18 patients (8/18; 44%). In five centers, 15 patients were treated conservatively, the majority being treated with therapeutic doses of low molecular weight heparin and simultaneous anti-aggregant therapy. In one center, all three patients were treated with a surgical approach. Complete resolution of symptoms was noted in only 50% of cases.

CONCLUSION

IPT is a condition that presents typically with perineal pain and swelling. Cycling is often seen as a provocative factor, while the presence of a fibrous web at the level of the crurocavernosal junction is the underlying disorder allowing for entrapment of blood in the crura. Conservative treatment provides a reasonably good outcome in most cases. For therapy resistant cases, surgery can be considered.

Partial priapism

With only 34 prior cases in world literature, partial priapism (PP), also called partial segmental thrombosis of the corpus cavernosum, is a rare urological condition. The aetiology and treatment of PP is still unclear, but bicycle riding, trauma, drug usage, sexual intercourse, haematological diseases and α-blockers have been associated with PP. In this case report and world literature review, we describe the case of a 50-year-old man suffering from PP after ingesting 100 mg of sildenafil. The patient was treated with a surgical incision for corpus cavernosum and clot evacuation, as a conservative treatment of PP was not feasible due to severe pain and unresponsiveness to analgesics.

Idiopathic partial thrombosis of the corpus cavernosum: aetiology, diagnosis and treatment

Idiopathic partial thrombosis of the corpus cavernosum (IPT) is a rare cause of perineal pain involving thrombosis within the proximal corpora cavernosa. This article clarifies the aetiology and makes recommendations on diagnosis and treatment. Three cases are described and a systematic review of the literature is presented. Magnetic resonance imaging (MRI) scans of the penis conducted for reasons other than IPT were also reviewed, to compare the normal anatomy of the corpora cavernosa with that of IPT patients.Twenty-nine IPT cases were identified, including the three described here. All patients presented with perineal pain and in all cases the thrombus was located in the proximal part of the corpora cavernosa.IPT has been associated with haematological diseases, drugs, prior priapism, sexual activity, bicycle riding and aeroplane flights. A fibrous septum within the corporeal tissue has been identified with advanced imaging modalities. Ultrasound, computed tomography and MRI have proven useful in the diagnosis. Both surgical and medical treatments have been attempted and the results have usually been good. However, two cases of surgical treatment have resulted in erectile dysfunction. It is suggested that ITP is based on the development of penile thrombosis and/or priapism in the presence of a pre-existing fibrous septum in the corpora cavernosa. MRI should be used to confirm the presence of a thrombus and a septum. First choice of treatment is pain medication and systemic anticoagulation; more invasive treatments should only be attempted only if this approach fails.

Partial segmental thrombosis of the corpus cavernosum: a case report and a review of the literature

Partial segmental thrombosis of the corpus cavernosum (PSTCC) is a rare urological condition characterized by a painful, firm mass in the proximal part of the corpus cavernosum. The underlying pathophysiology of this condition is not fully understood. We present a case diagnosed by magnetic resonance imaging with complete clinical recovery after conservative treatment and novel associated findings, such as excessive alcohol intake. We also review the previous cases of PSTCC and propose a two hit model explaining PSTCC's etiology.